diff options
Diffstat (limited to 'fs/reiserfs/journal.c')
| -rw-r--r-- | fs/reiserfs/journal.c | 6841 |
1 files changed, 3598 insertions, 3243 deletions
diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c index 3072cfdee959..c66c27ec4100 100644 --- a/fs/reiserfs/journal.c +++ b/fs/reiserfs/journal.c @@ -55,7 +55,6 @@ #include <linux/writeback.h> #include <linux/blkdev.h> - /* gets a struct reiserfs_journal_list * from a list head */ #define JOURNAL_LIST_ENTRY(h) (list_entry((h), struct reiserfs_journal_list, \ j_list)) @@ -69,55 +68,61 @@ static int reiserfs_mounted_fs_count; static struct workqueue_struct *commit_wq; -#define JOURNAL_TRANS_HALF 1018 /* must be correct to keep the desc and commit - structs at 4k */ -#define BUFNR 64 /*read ahead */ +#define JOURNAL_TRANS_HALF 1018 /* must be correct to keep the desc and commit + structs at 4k */ +#define BUFNR 64 /*read ahead */ /* cnode stat bits. Move these into reiserfs_fs.h */ #define BLOCK_FREED 2 /* this block was freed, and can't be written. */ -#define BLOCK_FREED_HOLDER 3 /* this block was freed during this transaction, and can't be written */ +#define BLOCK_FREED_HOLDER 3 /* this block was freed during this transaction, and can't be written */ #define BLOCK_NEEDS_FLUSH 4 /* used in flush_journal_list */ #define BLOCK_DIRTIED 5 - /* journal list state bits */ #define LIST_TOUCHED 1 #define LIST_DIRTY 2 -#define LIST_COMMIT_PENDING 4 /* someone will commit this list */ +#define LIST_COMMIT_PENDING 4 /* someone will commit this list */ /* flags for do_journal_end */ #define FLUSH_ALL 1 /* flush commit and real blocks */ #define COMMIT_NOW 2 /* end and commit this transaction */ -#define WAIT 4 /* wait for the log blocks to hit the disk*/ - -static int do_journal_end(struct reiserfs_transaction_handle *,struct super_block *,unsigned long nblocks,int flags) ; -static int flush_journal_list(struct super_block *s, struct reiserfs_journal_list *jl, int flushall) ; -static int flush_commit_list(struct super_block *s, struct reiserfs_journal_list *jl, int flushall) ; -static int can_dirty(struct reiserfs_journal_cnode *cn) ; -static int journal_join(struct reiserfs_transaction_handle *th, struct super_block *p_s_sb, unsigned long nblocks); -static int release_journal_dev( struct super_block *super, - struct reiserfs_journal *journal ); +#define WAIT 4 /* wait for the log blocks to hit the disk */ + +static int do_journal_end(struct reiserfs_transaction_handle *, + struct super_block *, unsigned long nblocks, + int flags); +static int flush_journal_list(struct super_block *s, + struct reiserfs_journal_list *jl, int flushall); +static int flush_commit_list(struct super_block *s, + struct reiserfs_journal_list *jl, int flushall); +static int can_dirty(struct reiserfs_journal_cnode *cn); +static int journal_join(struct reiserfs_transaction_handle *th, + struct super_block *p_s_sb, unsigned long nblocks); +static int release_journal_dev(struct super_block *super, + struct reiserfs_journal *journal); static int dirty_one_transaction(struct super_block *s, - struct reiserfs_journal_list *jl); + struct reiserfs_journal_list *jl); static void flush_async_commits(void *p); static void queue_log_writer(struct super_block *s); /* values for join in do_journal_begin_r */ enum { - JBEGIN_REG = 0, /* regular journal begin */ - JBEGIN_JOIN = 1, /* join the running transaction if at all possible */ - JBEGIN_ABORT = 2, /* called from cleanup code, ignores aborted flag */ + JBEGIN_REG = 0, /* regular journal begin */ + JBEGIN_JOIN = 1, /* join the running transaction if at all possible */ + JBEGIN_ABORT = 2, /* called from cleanup code, ignores aborted flag */ }; static int do_journal_begin_r(struct reiserfs_transaction_handle *th, - struct super_block * p_s_sb, - unsigned long nblocks,int join); + struct super_block *p_s_sb, + unsigned long nblocks, int join); -static void init_journal_hash(struct super_block *p_s_sb) { - struct reiserfs_journal *journal = SB_JOURNAL (p_s_sb); - memset(journal->j_hash_table, 0, JOURNAL_HASH_SIZE * sizeof(struct reiserfs_journal_cnode *)) ; +static void init_journal_hash(struct super_block *p_s_sb) +{ + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); + memset(journal->j_hash_table, 0, + JOURNAL_HASH_SIZE * sizeof(struct reiserfs_journal_cnode *)); } /* @@ -125,149 +130,159 @@ static void init_journal_hash(struct super_block *p_s_sb) { ** make schedule happen after I've freed a block. Look at remove_from_transaction and journal_mark_freed for ** more details. */ -static int reiserfs_clean_and_file_buffer(struct buffer_head *bh) { - if (bh) { - clear_buffer_dirty(bh); - clear_buffer_journal_test(bh); - } - return 0 ; +static int reiserfs_clean_and_file_buffer(struct buffer_head *bh) +{ + if (bh) { + clear_buffer_dirty(bh); + clear_buffer_journal_test(bh); + } + return 0; } static void disable_barrier(struct super_block *s) { - REISERFS_SB(s)->s_mount_opt &= ~(1 << REISERFS_BARRIER_FLUSH); - printk("reiserfs: disabling flush barriers on %s\n", reiserfs_bdevname(s)); -} - -static struct reiserfs_bitmap_node * -allocate_bitmap_node(struct super_block *p_s_sb) { - struct reiserfs_bitmap_node *bn ; - static int id; - - bn = reiserfs_kmalloc(sizeof(struct reiserfs_bitmap_node), GFP_NOFS, p_s_sb) ; - if (!bn) { - return NULL ; - } - bn->data = reiserfs_kmalloc(p_s_sb->s_blocksize, GFP_NOFS, p_s_sb) ; - if (!bn->data) { - reiserfs_kfree(bn, sizeof(struct reiserfs_bitmap_node), p_s_sb) ; - return NULL ; - } - bn->id = id++ ; - memset(bn->data, 0, p_s_sb->s_blocksize) ; - INIT_LIST_HEAD(&bn->list) ; - return bn ; -} - -static struct reiserfs_bitmap_node * -get_bitmap_node(struct super_block *p_s_sb) { - struct reiserfs_journal *journal = SB_JOURNAL (p_s_sb); - struct reiserfs_bitmap_node *bn = NULL; - struct list_head *entry = journal->j_bitmap_nodes.next ; - - journal->j_used_bitmap_nodes++ ; -repeat: - - if(entry != &journal->j_bitmap_nodes) { - bn = list_entry(entry, struct reiserfs_bitmap_node, list) ; - list_del(entry) ; - memset(bn->data, 0, p_s_sb->s_blocksize) ; - journal->j_free_bitmap_nodes-- ; - return bn ; - } - bn = allocate_bitmap_node(p_s_sb) ; - if (!bn) { - yield(); - goto repeat ; - } - return bn ; + REISERFS_SB(s)->s_mount_opt &= ~(1 << REISERFS_BARRIER_FLUSH); + printk("reiserfs: disabling flush barriers on %s\n", + reiserfs_bdevname(s)); +} + +static struct reiserfs_bitmap_node *allocate_bitmap_node(struct super_block + *p_s_sb) +{ + struct reiserfs_bitmap_node *bn; + static int id; + + bn = reiserfs_kmalloc(sizeof(struct reiserfs_bitmap_node), GFP_NOFS, + p_s_sb); + if (!bn) { + return NULL; + } + bn->data = reiserfs_kmalloc(p_s_sb->s_blocksize, GFP_NOFS, p_s_sb); + if (!bn->data) { + reiserfs_kfree(bn, sizeof(struct reiserfs_bitmap_node), p_s_sb); + return NULL; + } + bn->id = id++; + memset(bn->data, 0, p_s_sb->s_blocksize); + INIT_LIST_HEAD(&bn->list); + return bn; +} + +static struct reiserfs_bitmap_node *get_bitmap_node(struct super_block *p_s_sb) +{ + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); + struct reiserfs_bitmap_node *bn = NULL; + struct list_head *entry = journal->j_bitmap_nodes.next; + + journal->j_used_bitmap_nodes++; + repeat: + + if (entry != &journal->j_bitmap_nodes) { + bn = list_entry(entry, struct reiserfs_bitmap_node, list); + list_del(entry); + memset(bn->data, 0, p_s_sb->s_blocksize); + journal->j_free_bitmap_nodes--; + return bn; + } + bn = allocate_bitmap_node(p_s_sb); + if (!bn) { + yield(); + goto repeat; + } + return bn; } static inline void free_bitmap_node(struct super_block *p_s_sb, - struct reiserfs_bitmap_node *bn) { - struct reiserfs_journal *journal = SB_JOURNAL (p_s_sb); - journal->j_used_bitmap_nodes-- ; - if (journal->j_free_bitmap_nodes > REISERFS_MAX_BITMAP_NODES) { - reiserfs_kfree(bn->data, p_s_sb->s_blocksize, p_s_sb) ; - reiserfs_kfree(bn, sizeof(struct reiserfs_bitmap_node), p_s_sb) ; - } else { - list_add(&bn->list, &journal->j_bitmap_nodes) ; - journal->j_free_bitmap_nodes++ ; - } -} - -static void allocate_bitmap_nodes(struct super_block *p_s_sb) { - int i ; - struct reiserfs_journal *journal = SB_JOURNAL (p_s_sb); - struct reiserfs_bitmap_node *bn = NULL ; - for (i = 0 ; i < REISERFS_MIN_BITMAP_NODES ; i++) { - bn = allocate_bitmap_node(p_s_sb) ; - if (bn) { - list_add(&bn->list, &journal->j_bitmap_nodes) ; - journal->j_free_bitmap_nodes++ ; - } else { - break ; // this is ok, we'll try again when more are needed - } - } + struct reiserfs_bitmap_node *bn) +{ + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); + journal->j_used_bitmap_nodes--; + if (journal->j_free_bitmap_nodes > REISERFS_MAX_BITMAP_NODES) { + reiserfs_kfree(bn->data, p_s_sb->s_blocksize, p_s_sb); + reiserfs_kfree(bn, sizeof(struct reiserfs_bitmap_node), p_s_sb); + } else { + list_add(&bn->list, &journal->j_bitmap_nodes); + journal->j_free_bitmap_nodes++; + } +} + +static void allocate_bitmap_nodes(struct super_block *p_s_sb) +{ + int i; + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); + struct reiserfs_bitmap_node *bn = NULL; + for (i = 0; i < REISERFS_MIN_BITMAP_NODES; i++) { + bn = allocate_bitmap_node(p_s_sb); + if (bn) { + list_add(&bn->list, &journal->j_bitmap_nodes); + journal->j_free_bitmap_nodes++; + } else { + break; // this is ok, we'll try again when more are needed + } + } } static int set_bit_in_list_bitmap(struct super_block *p_s_sb, int block, - struct reiserfs_list_bitmap *jb) { - int bmap_nr = block / (p_s_sb->s_blocksize << 3) ; - int bit_nr = block % (p_s_sb->s_blocksize << 3) ; + struct reiserfs_list_bitmap *jb) +{ + int bmap_nr = block / (p_s_sb->s_blocksize << 3); + int bit_nr = block % (p_s_sb->s_blocksize << 3); - if (!jb->bitmaps[bmap_nr]) { - jb->bitmaps[bmap_nr] = get_bitmap_node(p_s_sb) ; - } - set_bit(bit_nr, (unsigned long *)jb->bitmaps[bmap_nr]->data) ; - return 0 ; + if (!jb->bitmaps[bmap_nr]) { + jb->bitmaps[bmap_nr] = get_bitmap_node(p_s_sb); + } + set_bit(bit_nr, (unsigned long *)jb->bitmaps[bmap_nr]->data); + return 0; } static void cleanup_bitmap_list(struct super_block *p_s_sb, - struct reiserfs_list_bitmap *jb) { - int i; - if (jb->bitmaps == NULL) - return; - - for (i = 0 ; i < SB_BMAP_NR(p_s_sb) ; i++) { - if (jb->bitmaps[i]) { - free_bitmap_node(p_s_sb, jb->bitmaps[i]) ; - jb->bitmaps[i] = NULL ; - } - } + struct reiserfs_list_bitmap *jb) +{ + int i; + if (jb->bitmaps == NULL) + return; + + for (i = 0; i < SB_BMAP_NR(p_s_sb); i++) { + if (jb->bitmaps[i]) { + free_bitmap_node(p_s_sb, jb->bitmaps[i]); + jb->bitmaps[i] = NULL; + } + } } /* ** only call this on FS unmount. */ static int free_list_bitmaps(struct super_block *p_s_sb, - struct reiserfs_list_bitmap *jb_array) { - int i ; - struct reiserfs_list_bitmap *jb ; - for (i = 0 ; i < JOURNAL_NUM_BITMAPS ; i++) { - jb = jb_array + i ; - jb->journal_list = NULL ; - cleanup_bitmap_list(p_s_sb, jb) ; - vfree(jb->bitmaps) ; - jb->bitmaps = NULL ; - } - return 0; -} - -static int free_bitmap_nodes(struct super_block *p_s_sb) { - struct reiserfs_journal *journal = SB_JOURNAL (p_s_sb); - struct list_head *next = journal->j_bitmap_nodes.next ; - struct reiserfs_bitmap_node *bn ; - - while(next != &journal->j_bitmap_nodes) { - bn = list_entry(next, struct reiserfs_bitmap_node, list) ; - list_del(next) ; - reiserfs_kfree(bn->data, p_s_sb->s_blocksize, p_s_sb) ; - reiserfs_kfree(bn, sizeof(struct reiserfs_bitmap_node), p_s_sb) ; - next = journal->j_bitmap_nodes.next ; - journal->j_free_bitmap_nodes-- ; - } - - return 0 ; + struct reiserfs_list_bitmap *jb_array) +{ + int i; + struct reiserfs_list_bitmap *jb; + for (i = 0; i < JOURNAL_NUM_BITMAPS; i++) { + jb = jb_array + i; + jb->journal_list = NULL; + cleanup_bitmap_list(p_s_sb, jb); + vfree(jb->bitmaps); + jb->bitmaps = NULL; + } + return 0; +} + +static int free_bitmap_nodes(struct super_block *p_s_sb) +{ + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); + struct list_head *next = journal->j_bitmap_nodes.next; + struct reiserfs_bitmap_node *bn; + + while (next != &journal->j_bitmap_nodes) { + bn = list_entry(next, struct reiserfs_bitmap_node, list); + list_del(next); + reiserfs_kfree(bn->data, p_s_sb->s_blocksize, p_s_sb); + reiserfs_kfree(bn, sizeof(struct reiserfs_bitmap_node), p_s_sb); + next = journal->j_bitmap_nodes.next; + journal->j_free_bitmap_nodes--; + } + + return 0; } /* @@ -275,59 +290,65 @@ static int free_bitmap_nodes(struct super_block *p_s_sb) { ** jb_array is the array to be filled in. */ int reiserfs_allocate_list_bitmaps(struct super_block *p_s_sb, - struct reiserfs_list_bitmap *jb_array, - int bmap_nr) { - int i ; - int failed = 0 ; - struct reiserfs_list_bitmap *jb ; - int mem = bmap_nr * sizeof(struct reiserfs_bitmap_node *) ; - - for (i = 0 ; i < JOURNAL_NUM_BITMAPS ; i++) { - jb = jb_array + i ; - jb->journal_list = NULL ; - jb->bitmaps = vmalloc( mem ) ; - if (!jb->bitmaps) { - reiserfs_warning(p_s_sb, "clm-2000, unable to allocate bitmaps for journal lists") ; - failed = 1; - break ; - } - memset(jb->bitmaps, 0, mem) ; - } - if (failed) { - free_list_bitmaps(p_s_sb, jb_array) ; - return -1 ; - } - return 0 ; + struct reiserfs_list_bitmap *jb_array, + int bmap_nr) +{ + int i; + int failed = 0; + struct reiserfs_list_bitmap *jb; + int mem = bmap_nr * sizeof(struct reiserfs_bitmap_node *); + + for (i = 0; i < JOURNAL_NUM_BITMAPS; i++) { + jb = jb_array + i; + jb->journal_list = NULL; + jb->bitmaps = vmalloc(mem); + if (!jb->bitmaps) { + reiserfs_warning(p_s_sb, + "clm-2000, unable to allocate bitmaps for journal lists"); + failed = 1; + break; + } + memset(jb->bitmaps, 0, mem); + } + if (failed) { + free_list_bitmaps(p_s_sb, jb_array); + return -1; + } + return 0; } /* ** find an available list bitmap. If you can't find one, flush a commit list ** and try again */ -static struct reiserfs_list_bitmap * -get_list_bitmap(struct super_block *p_s_sb, struct reiserfs_journal_list *jl) { - int i,j ; - struct reiserfs_journal *journal = SB_JOURNAL (p_s_sb); - struct reiserfs_list_bitmap *jb = NULL ; - - for (j = 0 ; j < (JOURNAL_NUM_BITMAPS * 3) ; j++) { - i = journal->j_list_bitmap_index ; - journal->j_list_bitmap_index = (i + 1) % JOURNAL_NUM_BITMAPS ; - jb = journal->j_list_bitmap + i ; - if (journal->j_list_bitmap[i].journal_list) { - flush_commit_list(p_s_sb, journal->j_list_bitmap[i].journal_list, 1) ; - if (!journal->j_list_bitmap[i].journal_list) { - break ; - } - } else { - break ; - } - } - if (jb->journal_list) { /* double check to make sure if flushed correctly */ - return NULL ; - } - jb->journal_list = jl ; - return jb ; +static struct reiserfs_list_bitmap *get_list_bitmap(struct super_block *p_s_sb, + struct reiserfs_journal_list + *jl) +{ + int i, j; + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); + struct reiserfs_list_bitmap *jb = NULL; + + for (j = 0; j < (JOURNAL_NUM_BITMAPS * 3); j++) { + i = journal->j_list_bitmap_index; + journal->j_list_bitmap_index = (i + 1) % JOURNAL_NUM_BITMAPS; + jb = journal->j_list_bitmap + i; + if (journal->j_list_bitmap[i].journal_list) { + flush_commit_list(p_s_sb, + journal->j_list_bitmap[i]. + journal_list, 1); + if (!journal->j_list_bitmap[i].journal_list) { + break; + } + } else { + break; + } + } + if (jb->journal_list) { /* double check to make sure if flushed correctly */ + return NULL; + } + jb->journal_list = jl; + return jb; } /* @@ -335,104 +356,114 @@ get_list_bitmap(struct super_block *p_s_sb, struct reiserfs_journal_list *jl) { ** Uses the cnode->next and cnode->prev pointers ** returns NULL on failure */ -static struct reiserfs_journal_cnode *allocate_cnodes(int num_cnodes) { - struct reiserfs_journal_cnode *head ; - int i ; - if (num_cnodes <= 0) { - return NULL ; - } - head = vmalloc(num_cnodes * sizeof(struct reiserfs_journal_cnode)) ; - if (!head) { - return NULL ; - } - memset(head, 0, num_cnodes * sizeof(struct reiserfs_journal_cnode)) ; - head[0].prev = NULL ; - head[0].next = head + 1 ; - for (i = 1 ; i < num_cnodes; i++) { - head[i].prev = head + (i - 1) ; - head[i].next = head + (i + 1) ; /* if last one, overwrite it after the if */ - } - head[num_cnodes -1].next = NULL ; - return head ; +static struct reiserfs_journal_cnode *allocate_cnodes(int num_cnodes) +{ + struct reiserfs_journal_cnode *head; + int i; + if (num_cnodes <= 0) { + return NULL; + } + head = vmalloc(num_cnodes * sizeof(struct reiserfs_journal_cnode)); + if (!head) { + return NULL; + } + memset(head, 0, num_cnodes * sizeof(struct reiserfs_journal_cnode)); + head[0].prev = NULL; + head[0].next = head + 1; + for (i = 1; i < num_cnodes; i++) { + head[i].prev = head + (i - 1); + head[i].next = head + (i + 1); /* if last one, overwrite it after the if */ + } + head[num_cnodes - 1].next = NULL; + return head; } /* ** pulls a cnode off the free list, or returns NULL on failure */ -static struct reiserfs_journal_cnode *get_cnode(struct super_block *p_s_sb) { - struct reiserfs_journal_cnode *cn ; - struct reiserfs_journal *journal = SB_JOURNAL (p_s_sb); - - reiserfs_check_lock_depth(p_s_sb, "get_cnode") ; - - if (journal->j_cnode_free <= 0) { - return NULL ; - } - journal->j_cnode_used++ ; - journal->j_cnode_free-- ; - cn = journal->j_cnode_free_list ; - if (!cn) { - return cn ; - } - if (cn->next) { - cn->next->prev = NULL ; - } - journal->j_cnode_free_list = cn->next ; - memset(cn, 0, sizeof(struct reiserfs_journal_cnode)) ; - return cn ; +static struct reiserfs_journal_cnode *get_cnode(struct super_block *p_s_sb) +{ + struct reiserfs_journal_cnode *cn; + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); + + reiserfs_check_lock_depth(p_s_sb, "get_cnode"); + + if (journal->j_cnode_free <= 0) { + return NULL; + } + journal->j_cnode_used++; + journal->j_cnode_free--; + cn = journal->j_cnode_free_list; + if (!cn) { + return cn; + } + if (cn->next) { + cn->next->prev = NULL; + } + journal->j_cnode_free_list = cn->next; + memset(cn, 0, sizeof(struct reiserfs_journal_cnode)); + return cn; } /* ** returns a cnode to the free list */ -static void free_cnode(struct super_block *p_s_sb, struct reiserfs_journal_cnode *cn) { - struct reiserfs_journal *journal = SB_JOURNAL (p_s_sb); +static void free_cnode(struct super_block *p_s_sb, + struct reiserfs_journal_cnode *cn) +{ + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); - reiserfs_check_lock_depth(p_s_sb, "free_cnode") ; + reiserfs_check_lock_depth(p_s_sb, "free_cnode"); - journal->j_cnode_used-- ; - journal->j_cnode_free++ ; - /* memset(cn, 0, sizeof(struct reiserfs_journal_cnode)) ; */ - cn->next = journal->j_cnode_free_list ; - if (journal->j_cnode_free_list) { - journal->j_cnode_free_list->prev = cn ; - } - cn->prev = NULL ; /* not needed with the memset, but I might kill the memset, and forget to do this */ - journal->j_cnode_free_list = cn ; + journal->j_cnode_used--; + journal->j_cnode_free++; + /* memset(cn, 0, sizeof(struct reiserfs_journal_cnode)) ; */ + cn->next = journal->j_cnode_free_list; + if (journal->j_cnode_free_list) { + journal->j_cnode_free_list->prev = cn; + } + cn->prev = NULL; /* not needed with the memset, but I might kill the memset, and forget to do this */ + journal->j_cnode_free_list = cn; } -static void clear_prepared_bits(struct buffer_head *bh) { - clear_buffer_journal_prepared (bh); - clear_buffer_journal_restore_dirty (bh); +static void clear_prepared_bits(struct buffer_head *bh) +{ + clear_buffer_journal_prepared(bh); + clear_buffer_journal_restore_dirty(bh); } /* utility function to force a BUG if it is called without the big ** kernel lock held. caller is the string printed just before calling BUG() */ -void reiserfs_check_lock_depth(struct super_block *sb, char *caller) { +void reiserfs_check_lock_depth(struct super_block *sb, char *caller) +{ #ifdef CONFIG_SMP - if (current->lock_depth < 0) { - reiserfs_panic (sb, "%s called without kernel lock held", caller) ; - } + if (current->lock_depth < 0) { + reiserfs_panic(sb, "%s called without kernel lock held", + caller); + } #else - ; + ; #endif } /* return a cnode with same dev, block number and size in table, or null if not found */ -static inline struct reiserfs_journal_cnode * -get_journal_hash_dev(struct super_block *sb, - struct reiserfs_journal_cnode **table, - long bl) +static inline struct reiserfs_journal_cnode *get_journal_hash_dev(struct + super_block + *sb, + struct + reiserfs_journal_cnode + **table, + long bl) { - struct reiserfs_journal_cnode *cn ; - cn = journal_hash(table, sb, bl) ; - while(cn) { - if (cn->blocknr == bl && cn->sb == sb) - return cn ; - cn = cn->hnext ; - } - return (struct reiserfs_journal_cnode *)0 ; + struct reiserfs_journal_cnode *cn; + cn = journal_hash(table, sb, bl); + while (cn) { + if (cn->blocknr == bl && cn->sb == sb) + return cn; + cn = cn->hnext; + } + return (struct reiserfs_journal_cnode *)0; } /* @@ -454,91 +485,103 @@ get_journal_hash_dev(struct super_block *sb, ** */ int reiserfs_in_journal(struct super_block *p_s_sb, - int bmap_nr, int bit_nr, int search_all, - b_blocknr_t *next_zero_bit) { - struct reiserfs_journal *journal = SB_JOURNAL (p_s_sb); - struct reiserfs_journal_cnode *cn ; - struct reiserfs_list_bitmap *jb ; - int i ; - unsigned long bl; - - *next_zero_bit = 0 ; /* always start this at zero. */ - - PROC_INFO_INC( p_s_sb, journal.in_journal ); - /* If we aren't doing a search_all, this is a metablock, and it will be logged before use. - ** if we crash before the transaction that freed it commits, this transaction won't - ** have committed either, and the block will never be written - */ - if (search_all) { - for (i = 0 ; i < JOURNAL_NUM_BITMAPS ; i++) { - PROC_INFO_INC( p_s_sb, journal.in_journal_bitmap ); - jb = journal->j_list_bitmap + i ; - if (jb->journal_list && jb->bitmaps[bmap_nr] && - test_bit(bit_nr, (unsigned long *)jb->bitmaps[bmap_nr]->data)) { - *next_zero_bit = find_next_zero_bit((unsigned long *) - (jb->bitmaps[bmap_nr]->data), - p_s_sb->s_blocksize << 3, bit_nr+1) ; - return 1 ; - } - } - } - - bl = bmap_nr * (p_s_sb->s_blocksize << 3) + bit_nr; - /* is it in any old transactions? */ - if (search_all && (cn = get_journal_hash_dev(p_s_sb, journal->j_list_hash_table, bl))) { - return 1; - } - - /* is it in the current transaction. This should never happen */ - if ((cn = get_journal_hash_dev(p_s_sb, journal->j_hash_table, bl))) { - BUG(); - return 1; - } - - PROC_INFO_INC( p_s_sb, journal.in_journal_reusable ); - /* safe for reuse */ - return 0 ; + int bmap_nr, int bit_nr, int search_all, + b_blocknr_t * next_zero_bit) +{ + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); + struct reiserfs_journal_cnode *cn; + struct reiserfs_list_bitmap *jb; + int i; + unsigned long bl; + + *next_zero_bit = 0; /* always start this at zero. */ + + PROC_INFO_INC(p_s_sb, journal.in_journal); + /* If we aren't doing a search_all, this is a metablock, and it will be logged before use. + ** if we crash before the transaction that freed it commits, this transaction won't + ** have committed either, and the block will never be written + */ + if (search_all) { + for (i = 0; i < JOURNAL_NUM_BITMAPS; i++) { + PROC_INFO_INC(p_s_sb, journal.in_journal_bitmap); + jb = journal->j_list_bitmap + i; + if (jb->journal_list && jb->bitmaps[bmap_nr] && + test_bit(bit_nr, + (unsigned long *)jb->bitmaps[bmap_nr]-> + data)) { + *next_zero_bit = + find_next_zero_bit((unsigned long *) + (jb->bitmaps[bmap_nr]-> + data), + p_s_sb->s_blocksize << 3, + bit_nr + 1); + return 1; + } + } + } + + bl = bmap_nr * (p_s_sb->s_blocksize << 3) + bit_nr; + /* is it in any old transactions? */ + if (search_all + && (cn = + get_journal_hash_dev(p_s_sb, journal->j_list_hash_table, bl))) { + return 1; + } + + /* is it in the current transaction. This should never happen */ + if ((cn = get_journal_hash_dev(p_s_sb, journal->j_hash_table, bl))) { + BUG(); + return 1; + } + + PROC_INFO_INC(p_s_sb, journal.in_journal_reusable); + /* safe for reuse */ + return 0; } /* insert cn into table */ -static inline void insert_journal_hash(struct reiserfs_journal_cnode **table, struct reiserfs_journal_cnode *cn) { - struct reiserfs_journal_cnode *cn_orig ; +static inline void insert_journal_hash(struct reiserfs_journal_cnode **table, + struct reiserfs_journal_cnode *cn) +{ + struct reiserfs_journal_cnode *cn_orig; - cn_orig = journal_hash(table, cn->sb, cn->blocknr) ; - cn->hnext = cn_orig ; - cn->hprev = NULL ; - if (cn_orig) { - cn_orig->hprev = cn ; - } - journal_hash(table, cn->sb, cn->blocknr) = cn ; + cn_orig = journal_hash(table, cn->sb, cn->blocknr); + cn->hnext = cn_orig; + cn->hprev = NULL; + if (cn_orig) { + cn_orig->hprev = cn; + } + journal_hash(table, cn->sb, cn->blocknr) = cn; } /* lock the current transaction */ -inline static void lock_journal(struct super_block *p_s_sb) { - PROC_INFO_INC( p_s_sb, journal.lock_journal ); - down(&SB_JOURNAL(p_s_sb)->j_lock); +inline static void lock_journal(struct super_block *p_s_sb) +{ + PROC_INFO_INC(p_s_sb, journal.lock_journal); + down(&SB_JOURNAL(p_s_sb)->j_lock); } /* unlock the current transaction */ -inline static void unlock_journal(struct super_block *p_s_sb) { - up(&SB_JOURNAL(p_s_sb)->j_lock); +inline static void unlock_journal(struct super_block *p_s_sb) +{ + up(&SB_JOURNAL(p_s_sb)->j_lock); } static inline void get_journal_list(struct reiserfs_journal_list *jl) { - jl->j_refcount++; + jl->j_refcount++; } static inline void put_journal_list(struct super_block *s, - struct reiserfs_journal_list *jl) + struct reiserfs_journal_list *jl) { - if (jl->j_refcount < 1) { - reiserfs_panic (s, "trans id %lu, refcount at %d", jl->j_trans_id, - jl->j_refcount); - } - if (--jl->j_refcount == 0) - reiserfs_kfree(jl, sizeof(struct reiserfs_journal_list), s); + if (jl->j_refcount < 1) { + reiserfs_panic(s, "trans id %lu, refcount at %d", + jl->j_trans_id, jl->j_refcount); + } + if (--jl->j_refcount == 0) + reiserfs_kfree(jl, sizeof(struct reiserfs_journal_list), s); } /* @@ -546,354 +589,375 @@ static inline void put_journal_list(struct super_block *s, ** it gets called by flush_commit_list, and cleans up any data stored about blocks freed during a ** transaction. */ -static void cleanup_freed_for_journal_list(struct super_block *p_s_sb, struct reiserfs_journal_list *jl) { +static void cleanup_freed_for_journal_list(struct super_block *p_s_sb, + struct reiserfs_journal_list *jl) +{ - struct reiserfs_list_bitmap *jb = jl->j_list_bitmap ; - if (jb) { - cleanup_bitmap_list(p_s_sb, jb) ; - } - jl->j_list_bitmap->journal_list = NULL ; - jl->j_list_bitmap = NULL ; + struct reiserfs_list_bitmap *jb = jl->j_list_bitmap; + if (jb) { + cleanup_bitmap_list(p_s_sb, jb); + } + jl->j_list_bitmap->journal_list = NULL; + jl->j_list_bitmap = NULL; } static int journal_list_still_alive(struct super_block *s, - unsigned long trans_id) -{ - struct reiserfs_journal *journal = SB_JOURNAL (s); - struct list_head *entry = &journal->j_journal_list; - struct reiserfs_journal_list *jl; - - if (!list_empty(entry)) { - jl = JOURNAL_LIST_ENTRY(entry->next); - if (jl->j_trans_id <= trans_id) { - return 1; - } - } - return 0; -} - -static void reiserfs_end_buffer_io_sync(struct buffer_head *bh, int uptodate) { - char b[BDEVNAME_SIZE]; - - if (buffer_journaled(bh)) { - reiserfs_warning(NULL, "clm-2084: pinned buffer %lu:%s sent to disk", - bh->b_blocknr, bdevname(bh->b_bdev, b)) ; - } - if (uptodate) - set_buffer_uptodate(bh) ; - else - clear_buffer_uptodate(bh) ; - unlock_buffer(bh) ; - put_bh(bh) ; -} - -static void reiserfs_end_ordered_io(struct buffer_head *bh, int uptodate) { - if (uptodate) - set_buffer_uptodate(bh) ; - else - clear_buffer_uptodate(bh) ; - unlock_buffer(bh) ; - put_bh(bh) ; -} - -static void submit_logged_buffer(struct buffer_head *bh) { - get_bh(bh) ; - bh->b_end_io = reiserfs_end_buffer_io_sync ; - clear_buffer_journal_new (bh); - clear_buffer_dirty(bh) ; - if (!test_clear_buffer_journal_test (bh)) - BUG(); - if (!buffer_uptodate(bh)) - BUG(); - submit_bh(WRITE, bh) ; -} - -static void submit_ordered_buffer(struct buffer_head *bh) { - get_bh(bh) ; - bh->b_end_io = reiserfs_end_ordered_io; - clear_buffer_dirty(bh) ; - if (!buffer_uptodate(bh)) - BUG(); - submit_bh(WRITE, bh) ; -} - -static int submit_barrier_buffer(struct buffer_head *bh) { - get_bh(bh) ; - bh->b_end_io = reiserfs_end_ordered_io; - clear_buffer_dirty(bh) ; - if (!buffer_uptodate(bh)) - BUG(); - return submit_bh(WRITE_BARRIER, bh) ; + unsigned long trans_id) +{ + struct reiserfs_journal *journal = SB_JOURNAL(s); + struct list_head *entry = &journal->j_journal_list; + struct reiserfs_journal_list *jl; + + if (!list_empty(entry)) { + jl = JOURNAL_LIST_ENTRY(entry->next); + if (jl->j_trans_id <= trans_id) { + return 1; + } + } + return 0; +} + +static void reiserfs_end_buffer_io_sync(struct buffer_head *bh, int uptodate) +{ + char b[BDEVNAME_SIZE]; + + if (buffer_journaled(bh)) { + reiserfs_warning(NULL, + "clm-2084: pinned buffer %lu:%s sent to disk", + bh->b_blocknr, bdevname(bh->b_bdev, b)); + } + if (uptodate) + set_buffer_uptodate(bh); + else + clear_buffer_uptodate(bh); + unlock_buffer(bh); + put_bh(bh); +} + +static void reiserfs_end_ordered_io(struct buffer_head *bh, int uptodate) +{ + if (uptodate) + set_buffer_uptodate(bh); + else + clear_buffer_uptodate(bh); + unlock_buffer(bh); + put_bh(bh); +} + +static void submit_logged_buffer(struct buffer_head *bh) +{ + get_bh(bh); + bh->b_end_io = reiserfs_end_buffer_io_sync; + clear_buffer_journal_new(bh); + clear_buffer_dirty(bh); + if (!test_clear_buffer_journal_test(bh)) + BUG(); + if (!buffer_uptodate(bh)) + BUG(); + submit_bh(WRITE, bh); +} + +static void submit_ordered_buffer(struct buffer_head *bh) +{ + get_bh(bh); + bh->b_end_io = reiserfs_end_ordered_io; + clear_buffer_dirty(bh); + if (!buffer_uptodate(bh)) + BUG(); + submit_bh(WRITE, bh); +} + +static int submit_barrier_buffer(struct buffer_head *bh) +{ + get_bh(bh); + bh->b_end_io = reiserfs_end_ordered_io; + clear_buffer_dirty(bh); + if (!buffer_uptodate(bh)) + BUG(); + return submit_bh(WRITE_BARRIER, bh); } static void check_barrier_completion(struct super_block *s, - struct buffer_head *bh) { - if (buffer_eopnotsupp(bh)) { - clear_buffer_eopnotsupp(bh); - disable_barrier(s); - set_buffer_uptodate(bh); - set_buffer_dirty(bh); - sync_dirty_buffer(bh); - } + struct buffer_head *bh) +{ + if (buffer_eopnotsupp(bh)) { + clear_buffer_eopnotsupp(bh); + disable_barrier(s); + set_buffer_uptodate(bh); + set_buffer_dirty(bh); + sync_dirty_buffer(bh); + } } #define CHUNK_SIZE 32 struct buffer_chunk { - struct buffer_head *bh[CHUNK_SIZE]; - int nr; + struct buffer_head *bh[CHUNK_SIZE]; + int nr; }; -static void write_chunk(struct buffer_chunk *chunk) { - int i; - for (i = 0; i < chunk->nr ; i++) { - submit_logged_buffer(chunk->bh[i]) ; - } - chunk->nr = 0; +static void write_chunk(struct buffer_chunk *chunk) +{ + int i; + get_fs_excl(); + for (i = 0; i < chunk->nr; i++) { + submit_logged_buffer(chunk->bh[i]); + } + chunk->nr = 0; + put_fs_excl(); } -static void write_ordered_chunk(struct buffer_chunk *chunk) { - int i; - for (i = 0; i < chunk->nr ; i++) { - submit_ordered_buffer(chunk->bh[i]) ; - } - chunk->nr = 0; +static void write_ordered_chunk(struct buffer_chunk *chunk) +{ + int i; + get_fs_excl(); + for (i = 0; i < chunk->nr; i++) { + submit_ordered_buffer(chunk->bh[i]); + } + chunk->nr = 0; + put_fs_excl(); } static int add_to_chunk(struct buffer_chunk *chunk, struct buffer_head *bh, - spinlock_t *lock, - void (fn)(struct buffer_chunk *)) + spinlock_t * lock, void (fn) (struct buffer_chunk *)) { - int ret = 0; - if (chunk->nr >= CHUNK_SIZE) - BUG(); - chunk->bh[chunk->nr++] = bh; - if (chunk->nr >= CHUNK_SIZE) { - ret = 1; - if (lock) - spin_unlock(lock); - fn(chunk); - if (lock) - spin_lock(lock); - } - return ret; + int ret = 0; + if (chunk->nr >= CHUNK_SIZE) + BUG(); + chunk->bh[chunk->nr++] = bh; + if (chunk->nr >= CHUNK_SIZE) { + ret = 1; + if (lock) + spin_unlock(lock); + fn(chunk); + if (lock) + spin_lock(lock); + } + return ret; } - static atomic_t nr_reiserfs_jh = ATOMIC_INIT(0); -static struct reiserfs_jh *alloc_jh(void) { - struct reiserfs_jh *jh; - while(1) { - jh = kmalloc(sizeof(*jh), GFP_NOFS); - if (jh) { - atomic_inc(&nr_reiserfs_jh); - return jh; +static struct reiserfs_jh *alloc_jh(void) +{ + struct reiserfs_jh *jh; + while (1) { + jh = kmalloc(sizeof(*jh), GFP_NOFS); + if (jh) { + atomic_inc(&nr_reiserfs_jh); + return jh; + } + yield(); } - yield(); - } } /* * we want to free the jh when the buffer has been written * and waited on */ -void reiserfs_free_jh(struct buffer_head *bh) { - struct reiserfs_jh *jh; - - jh = bh->b_private; - if (jh) { - bh->b_private = NULL; - jh->bh = NULL; - list_del_init(&jh->list); - kfree(jh); - if (atomic_read(&nr_reiserfs_jh) <= 0) - BUG(); - atomic_dec(&nr_reiserfs_jh); - put_bh(bh); - } +void reiserfs_free_jh(struct buffer_head *bh) +{ + struct reiserfs_jh *jh; + + jh = bh->b_private; + if (jh) { + bh->b_private = NULL; + jh->bh = NULL; + list_del_init(&jh->list); + kfree(jh); + if (atomic_read(&nr_reiserfs_jh) <= 0) + BUG(); + atomic_dec(&nr_reiserfs_jh); + put_bh(bh); + } } static inline int __add_jh(struct reiserfs_journal *j, struct buffer_head *bh, - int tail) + int tail) { - struct reiserfs_jh *jh; + struct reiserfs_jh *jh; - if (bh->b_private) { - spin_lock(&j->j_dirty_buffers_lock); - if (!bh->b_private) { - spin_unlock(&j->j_dirty_buffers_lock); - goto no_jh; + if (bh->b_private) { + spin_lock(&j->j_dirty_buffers_lock); + if (!bh->b_private) { + spin_unlock(&j->j_dirty_buffers_lock); + goto no_jh; + } + jh = bh->b_private; + list_del_init(&jh->list); + } else { + no_jh: + get_bh(bh); + jh = alloc_jh(); + spin_lock(&j->j_dirty_buffers_lock); + /* buffer must be locked for __add_jh, should be able to have + * two adds at the same time + */ + if (bh->b_private) + BUG(); + jh->bh = bh; + bh->b_private = jh; } - jh = bh->b_private; - list_del_init(&jh->list); - } else { -no_jh: - get_bh(bh); - jh = alloc_jh(); - spin_lock(&j->j_dirty_buffers_lock); - /* buffer must be locked for __add_jh, should be able to have - * two adds at the same time - */ - if (bh->b_private) - BUG(); - jh->bh = bh; - bh->b_private = jh; - } - jh->jl = j->j_current_jl; - if (tail) - list_add_tail(&jh->list, &jh->jl->j_tail_bh_list); - else { - list_add_tail(&jh->list, &jh->jl->j_bh_list); - } - spin_unlock(&j->j_dirty_buffers_lock); - return 0; + jh->jl = j->j_current_jl; + if (tail) + list_add_tail(&jh->list, &jh->jl->j_tail_bh_list); + else { + list_add_tail(&jh->list, &jh->jl->j_bh_list); + } + spin_unlock(&j->j_dirty_buffers_lock); + return 0; } -int reiserfs_add_tail_list(struct inode *inode, struct buffer_head *bh) { - return __add_jh(SB_JOURNAL(inode->i_sb), bh, 1); +int reiserfs_add_tail_list(struct inode *inode, struct buffer_head *bh) +{ + return __add_jh(SB_JOURNAL(inode->i_sb), bh, 1); } -int reiserfs_add_ordered_list(struct inode *inode, struct buffer_head *bh) { - return __add_jh(SB_JOURNAL(inode->i_sb), bh, 0); +int reiserfs_add_ordered_list(struct inode *inode, struct buffer_head *bh) +{ + return __add_jh(SB_JOURNAL(inode->i_sb), bh, 0); } #define JH_ENTRY(l) list_entry((l), struct reiserfs_jh, list) -static int write_ordered_buffers(spinlock_t *lock, +static int write_ordered_buffers(spinlock_t * lock, struct reiserfs_journal *j, - struct reiserfs_journal_list *jl, + struct reiserfs_journal_list *jl, struct list_head *list) { - struct buffer_head *bh; - struct reiserfs_jh *jh; - int ret = j->j_errno; - struct buffer_chunk chunk; - struct list_head tmp; - INIT_LIST_HEAD(&tmp); - - chunk.nr = 0; - spin_lock(lock); - while(!list_empty(list)) { - jh = JH_ENTRY(list->next); - bh = jh->bh; - get_bh(bh); - if (test_set_buffer_locked(bh)) { - if (!buffer_dirty(bh)) { - list_del_init(&jh->list); - list_add(&jh->list, &tmp); - goto loop_next; - } - spin_unlock(lock); - if (chunk.nr) + struct buffer_head *bh; + struct reiserfs_jh *jh; + int ret = j->j_errno; + struct buffer_chunk chunk; + struct list_head tmp; + INIT_LIST_HEAD(&tmp); + + chunk.nr = 0; + spin_lock(lock); + while (!list_empty(list)) { + jh = JH_ENTRY(list->next); + bh = jh->bh; + get_bh(bh); + if (test_set_buffer_locked(bh)) { + if (!buffer_dirty(bh)) { + list_del_init(&jh->list); + list_add(&jh->list, &tmp); + goto loop_next; + } + spin_unlock(lock); + if (chunk.nr) + write_ordered_chunk(&chunk); + wait_on_buffer(bh); + cond_resched(); + spin_lock(lock); + goto loop_next; + } + if (buffer_dirty(bh)) { + list_del_init(&jh->list); + list_add(&jh->list, &tmp); + add_to_chunk(&chunk, bh, lock, write_ordered_chunk); + } else { + reiserfs_free_jh(bh); + unlock_buffer(bh); + } + loop_next: + put_bh(bh); + cond_resched_lock(lock); + } + if (chunk.nr) { + spin_unlock(lock); write_ordered_chunk(&chunk); - wait_on_buffer(bh); - cond_resched(); - spin_lock(lock); - goto loop_next; - } - if (buffer_dirty(bh)) { - list_del_init(&jh->list); - list_add(&jh->list, &tmp); - add_to_chunk(&chunk, bh, lock, write_ordered_chunk); - } else { - reiserfs_free_jh(bh); - unlock_buffer(bh); + spin_lock(lock); } -loop_next: - put_bh(bh); - cond_resched_lock(lock); - } - if (chunk.nr) { - spin_unlock(lock); - write_ordered_chunk(&chunk); - spin_lock(lock); - } - while(!list_empty(&tmp)) { - jh = JH_ENTRY(tmp.prev); - bh = jh->bh; - get_bh(bh); - reiserfs_free_jh(bh); - - if (buffer_locked(bh)) { - spin_unlock(lock); - wait_on_buffer(bh); - spin_lock(lock); + while (!list_empty(&tmp)) { + jh = JH_ENTRY(tmp.prev); + bh = jh->bh; + get_bh(bh); + reiserfs_free_jh(bh); + + if (buffer_locked(bh)) { + spin_unlock(lock); + wait_on_buffer(bh); + spin_lock(lock); + } + if (!buffer_uptodate(bh)) { + ret = -EIO; + } + put_bh(bh); + cond_resched_lock(lock); } - if (!buffer_uptodate(bh)) { - ret = -EIO; - } - put_bh(bh); - cond_resched_lock(lock); - } - spin_unlock(lock); - return ret; -} - -static int flush_older_commits(struct super_block *s, struct reiserfs_journal_list *jl) { - struct reiserfs_journal *journal = SB_JOURNAL (s); - struct reiserfs_journal_list *other_jl; - struct reiserfs_journal_list *first_jl; - struct list_head *entry; - unsigned long trans_id = jl->j_trans_id; - unsigned long other_trans_id; - unsigned long first_trans_id; - -find_first: - /* - * first we walk backwards to find the oldest uncommitted transation - */ - first_jl = jl; - entry = jl->j_list.prev; - while(1) { - other_jl = JOURNAL_LIST_ENTRY(entry); - if (entry == &journal->j_journal_list || - atomic_read(&other_jl->j_older_commits_done)) - break; - - first_jl = other_jl; - entry = other_jl->j_list.prev; - } - - /* if we didn't find any older uncommitted transactions, return now */ - if (first_jl == jl) { - return 0; - } - - first_trans_id = first_jl->j_trans_id; + spin_unlock(lock); + return ret; +} - entry = &first_jl->j_list; - while(1) { - other_jl = JOURNAL_LIST_ENTRY(entry); - other_trans_id = other_jl->j_trans_id; +static int flush_older_commits(struct super_block *s, + struct reiserfs_journal_list *jl) +{ + struct reiserfs_journal *journal = SB_JOURNAL(s); + struct reiserfs_journal_list *other_jl; + struct reiserfs_journal_list *first_jl; + struct list_head *entry; + unsigned long trans_id = jl->j_trans_id; + unsigned long other_trans_id; + unsigned long first_trans_id; + + find_first: + /* + * first we walk backwards to find the oldest uncommitted transation + */ + first_jl = jl; + entry = jl->j_list.prev; + while (1) { + other_jl = JOURNAL_LIST_ENTRY(entry); + if (entry == &journal->j_journal_list || + atomic_read(&other_jl->j_older_commits_done)) + break; - if (other_trans_id < trans_id) { - if (atomic_read(&other_jl->j_commit_left) != 0) { - flush_commit_list(s, other_jl, 0); + first_jl = other_jl; + entry = other_jl->j_list.prev; + } - /* list we were called with is gone, return */ - if (!journal_list_still_alive(s, trans_id)) - return 1; + /* if we didn't find any older uncommitted transactions, return now */ + if (first_jl == jl) { + return 0; + } - /* the one we just flushed is gone, this means all - * older lists are also gone, so first_jl is no longer - * valid either. Go back to the beginning. - */ - if (!journal_list_still_alive(s, other_trans_id)) { - goto find_first; + first_trans_id = first_jl->j_trans_id; + + entry = &first_jl->j_list; + while (1) { + other_jl = JOURNAL_LIST_ENTRY(entry); + other_trans_id = other_jl->j_trans_id; + + if (other_trans_id < trans_id) { + if (atomic_read(&other_jl->j_commit_left) != 0) { + flush_commit_list(s, other_jl, 0); + + /* list we were called with is gone, return */ + if (!journal_list_still_alive(s, trans_id)) + return 1; + + /* the one we just flushed is gone, this means all + * older lists are also gone, so first_jl is no longer + * valid either. Go back to the beginning. + */ + if (!journal_list_still_alive + (s, other_trans_id)) { + goto find_first; + } + } + entry = entry->next; + if (entry == &journal->j_journal_list) + return 0; + } else { + return 0; } - } - entry = entry->next; - if (entry == &journal->j_journal_list) - return 0; - } else { - return 0; } - } - return 0; + return 0; } -int reiserfs_async_progress_wait(struct super_block *s) { - DEFINE_WAIT(wait); - struct reiserfs_journal *j = SB_JOURNAL(s); - if (atomic_read(&j->j_async_throttle)) - blk_congestion_wait(WRITE, HZ/10); - return 0; +int reiserfs_async_progress_wait(struct super_block *s) +{ + DEFINE_WAIT(wait); + struct reiserfs_journal *j = SB_JOURNAL(s); + if (atomic_read(&j->j_async_throttle)) + blk_congestion_wait(WRITE, HZ / 10); + return 0; } /* @@ -903,209 +967,225 @@ int reiserfs_async_progress_wait(struct super_block *s) { ** Before the commit block can by written, every other log block must be safely on disk ** */ -static int flush_commit_list(struct super_block *s, struct reiserfs_journal_list *jl, int flushall) { - int i; - int bn ; - struct buffer_head *tbh = NULL ; - unsigned long trans_id = jl->j_trans_id; - struct reiserfs_journal *journal = SB_JOURNAL (s); - int barrier = 0; - int retval = 0; - - reiserfs_check_lock_depth(s, "flush_commit_list") ; - - if (atomic_read(&jl->j_older_commits_done)) { - return 0 ; - } - - /* before we can put our commit blocks on disk, we have to make sure everyone older than - ** us is on disk too - */ - BUG_ON (jl->j_len <= 0); - BUG_ON (trans_id == journal->j_trans_id); - - get_journal_list(jl); - if (flushall) { - if (flush_older_commits(s, jl) == 1) { - /* list disappeared during flush_older_commits. return */ - goto put_jl; - } - } - - /* make sure nobody is trying to flush this one at the same time */ - down(&jl->j_commit_lock); - if (!journal_list_still_alive(s, trans_id)) { - up(&jl->j_commit_lock); - goto put_jl; - } - BUG_ON (jl->j_trans_id == 0); - - /* this commit is done, exit */ - if (atomic_read(&(jl->j_commit_left)) <= 0) { - if (flushall) { - atomic_set(&(jl->j_older_commits_done), 1) ; - } - up(&jl->j_commit_lock); - goto put_jl; - } - - if (!list_empty(&jl->j_bh_list)) { - unlock_kernel(); - write_ordered_buffers(&journal->j_dirty_buffers_lock, - journal, jl, &jl->j_bh_list); - lock_kernel(); - } - BUG_ON (!list_empty(&jl->j_bh_list)); - /* - * for the description block and all the log blocks, submit any buffers - * that haven't already reached the disk - */ - atomic_inc(&journal->j_async_throttle); - for (i = 0 ; i < (jl->j_len + 1) ; i++) { - bn = SB_ONDISK_JOURNAL_1st_BLOCK(s) + (jl->j_start+i) % - SB_ONDISK_JOURNAL_SIZE(s); - tbh = journal_find_get_block(s, bn) ; - if (buffer_dirty(tbh)) /* redundant, ll_rw_block() checks */ - ll_rw_block(WRITE, 1, &tbh) ; - put_bh(tbh) ; - } - atomic_dec(&journal->j_async_throttle); - - /* wait on everything written so far before writing the commit - * if we are in barrier mode, send the commit down now - */ - barrier = reiserfs_barrier_flush(s); - if (barrier) { - int ret; - lock_buffer(jl->j_commit_bh); - ret = submit_barrier_buffer(jl->j_commit_bh); - if (ret == -EOPNOTSUPP) { - set_buffer_uptodate(jl->j_commit_bh); - disable_barrier(s); - barrier = 0; - } - } - for (i = 0 ; i < (jl->j_len + 1) ; i++) { - bn = SB_ONDISK_JOURNAL_1st_BLOCK(s) + - (jl->j_start + i) % SB_ONDISK_JOURNAL_SIZE(s) ; - tbh = journal_find_get_block(s, bn) ; - wait_on_buffer(tbh) ; - // since we're using ll_rw_blk above, it might have skipped over - // a locked buffer. Double check here - // - if (buffer_dirty(tbh)) /* redundant, sync_dirty_buffer() checks */ - sync_dirty_buffer(tbh); - if (unlikely (!buffer_uptodate(tbh))) { +static int flush_commit_list(struct super_block *s, + struct reiserfs_journal_list *jl, int flushall) +{ + int i; + int bn; + struct buffer_head *tbh = NULL; + unsigned long trans_id = jl->j_trans_id; + struct reiserfs_journal *journal = SB_JOURNAL(s); + int barrier = 0; + int retval = 0; + + reiserfs_check_lock_depth(s, "flush_commit_list"); + + if (atomic_read(&jl->j_older_commits_done)) { + return 0; + } + + get_fs_excl(); + + /* before we can put our commit blocks on disk, we have to make sure everyone older than + ** us is on disk too + */ + BUG_ON(jl->j_len <= 0); + BUG_ON(trans_id == journal->j_trans_id); + + get_journal_list(jl); + if (flushall) { + if (flush_older_commits(s, jl) == 1) { + /* list disappeared during flush_older_commits. return */ + goto put_jl; + } + } + + /* make sure nobody is trying to flush this one at the same time */ + down(&jl->j_commit_lock); + if (!journal_list_still_alive(s, trans_id)) { + up(&jl->j_commit_lock); + goto put_jl; + } + BUG_ON(jl->j_trans_id == 0); + + /* this commit is done, exit */ + if (atomic_read(&(jl->j_commit_left)) <= 0) { + if (flushall) { + atomic_set(&(jl->j_older_commits_done), 1); + } + up(&jl->j_commit_lock); + goto put_jl; + } + + if (!list_empty(&jl->j_bh_list)) { + unlock_kernel(); + write_ordered_buffers(&journal->j_dirty_buffers_lock, + journal, jl, &jl->j_bh_list); + lock_kernel(); + } + BUG_ON(!list_empty(&jl->j_bh_list)); + /* + * for the description block and all the log blocks, submit any buffers + * that haven't already reached the disk + */ + atomic_inc(&journal->j_async_throttle); + for (i = 0; i < (jl->j_len + 1); i++) { + bn = SB_ONDISK_JOURNAL_1st_BLOCK(s) + (jl->j_start + i) % + SB_ONDISK_JOURNAL_SIZE(s); + tbh = journal_find_get_block(s, bn); + if (buffer_dirty(tbh)) /* redundant, ll_rw_block() checks */ + ll_rw_block(WRITE, 1, &tbh); + put_bh(tbh); + } + atomic_dec(&journal->j_async_throttle); + + /* wait on everything written so far before writing the commit + * if we are in barrier mode, send the commit down now + */ + barrier = reiserfs_barrier_flush(s); + if (barrier) { + int ret; + lock_buffer(jl->j_commit_bh); + ret = submit_barrier_buffer(jl->j_commit_bh); + if (ret == -EOPNOTSUPP) { + set_buffer_uptodate(jl->j_commit_bh); + disable_barrier(s); + barrier = 0; + } + } + for (i = 0; i < (jl->j_len + 1); i++) { + bn = SB_ONDISK_JOURNAL_1st_BLOCK(s) + + (jl->j_start + i) % SB_ONDISK_JOURNAL_SIZE(s); + tbh = journal_find_get_block(s, bn); + wait_on_buffer(tbh); + // since we're using ll_rw_blk above, it might have skipped over + // a locked buffer. Double check here + // + if (buffer_dirty(tbh)) /* redundant, sync_dirty_buffer() checks */ + sync_dirty_buffer(tbh); + if (unlikely(!buffer_uptodate(tbh))) { #ifdef CONFIG_REISERFS_CHECK - reiserfs_warning(s, "journal-601, buffer write failed") ; + reiserfs_warning(s, "journal-601, buffer write failed"); #endif - retval = -EIO; - } - put_bh(tbh) ; /* once for journal_find_get_block */ - put_bh(tbh) ; /* once due to original getblk in do_journal_end */ - atomic_dec(&(jl->j_commit_left)) ; - } - - BUG_ON (atomic_read(&(jl->j_commit_left)) != 1); - - if (!barrier) { - if (buffer_dirty(jl->j_commit_bh)) - BUG(); - mark_buffer_dirty(jl->j_commit_bh) ; - sync_dirty_buffer(jl->j_commit_bh) ; - } else - wait_on_buffer(jl->j_commit_bh); - - check_barrier_completion(s, jl->j_commit_bh); - - /* If there was a write error in the journal - we can't commit this - * transaction - it will be invalid and, if successful, will just end - * up propogating the write error out to the filesystem. */ - if (unlikely (!buffer_uptodate(jl->j_commit_bh))) { + retval = -EIO; + } + put_bh(tbh); /* once for journal_find_get_block */ + put_bh(tbh); /* once due to original getblk in do_journal_end */ + atomic_dec(&(jl->j_commit_left)); + } + + BUG_ON(atomic_read(&(jl->j_commit_left)) != 1); + + if (!barrier) { + if (buffer_dirty(jl->j_commit_bh)) + BUG(); + mark_buffer_dirty(jl->j_commit_bh); + sync_dirty_buffer(jl->j_commit_bh); + } else + wait_on_buffer(jl->j_commit_bh); + + check_barrier_completion(s, jl->j_commit_bh); + + /* If there was a write error in the journal - we can't commit this + * transaction - it will be invalid and, if successful, will just end + * up propogating the write error out to the filesystem. */ + if (unlikely(!buffer_uptodate(jl->j_commit_bh))) { #ifdef CONFIG_REISERFS_CHECK - reiserfs_warning(s, "journal-615: buffer write failed") ; + reiserfs_warning(s, "journal-615: buffer write failed"); #endif - retval = -EIO; - } - bforget(jl->j_commit_bh) ; - if (journal->j_last_commit_id != 0 && - (jl->j_trans_id - journal->j_last_commit_id) != 1) { - reiserfs_warning(s, "clm-2200: last commit %lu, current %lu", - journal->j_last_commit_id, - jl->j_trans_id); - } - journal->j_last_commit_id = jl->j_trans_id; - - /* now, every commit block is on the disk. It is safe to allow blocks freed during this transaction to be reallocated */ - cleanup_freed_for_journal_list(s, jl) ; - - retval = retval ? retval : journal->j_errno; - - /* mark the metadata dirty */ - if (!retval) - dirty_one_transaction(s, jl); - atomic_dec(&(jl->j_commit_left)) ; - - if (flushall) { - atomic_set(&(jl->j_older_commits_done), 1) ; - } - up(&jl->j_commit_lock); -put_jl: - put_journal_list(s, jl); - - if (retval) - reiserfs_abort (s, retval, "Journal write error in %s", __FUNCTION__); - return retval; + retval = -EIO; + } + bforget(jl->j_commit_bh); + if (journal->j_last_commit_id != 0 && + (jl->j_trans_id - journal->j_last_commit_id) != 1) { + reiserfs_warning(s, "clm-2200: last commit %lu, current %lu", + journal->j_last_commit_id, jl->j_trans_id); + } + journal->j_last_commit_id = jl->j_trans_id; + + /* now, every commit block is on the disk. It is safe to allow blocks freed during this transaction to be reallocated */ + cleanup_freed_for_journal_list(s, jl); + + retval = retval ? retval : journal->j_errno; + + /* mark the metadata dirty */ + if (!retval) + dirty_one_transaction(s, jl); + atomic_dec(&(jl->j_commit_left)); + + if (flushall) { + atomic_set(&(jl->j_older_commits_done), 1); + } + up(&jl->j_commit_lock); + put_jl: + put_journal_list(s, jl); + + if (retval) + reiserfs_abort(s, retval, "Journal write error in %s", + __FUNCTION__); + put_fs_excl(); + return retval; } /* ** flush_journal_list frequently needs to find a newer transaction for a given block. This does that, or ** returns NULL if it can't find anything */ -static struct reiserfs_journal_list *find_newer_jl_for_cn(struct reiserfs_journal_cnode *cn) { - struct super_block *sb = cn->sb; - b_blocknr_t blocknr = cn->blocknr ; +static struct reiserfs_journal_list *find_newer_jl_for_cn(struct + reiserfs_journal_cnode + *cn) +{ + struct super_block *sb = cn->sb; + b_blocknr_t blocknr = cn->blocknr; - cn = cn->hprev ; - while(cn) { - if (cn->sb == sb && cn->blocknr == blocknr && cn->jlist) { - return cn->jlist ; - } - cn = cn->hprev ; - } - return NULL ; + cn = cn->hprev; + while (cn) { + if (cn->sb == sb && cn->blocknr == blocknr && cn->jlist) { + return cn->jlist; + } + cn = cn->hprev; + } + return NULL; } -static void remove_journal_hash(struct super_block *, struct reiserfs_journal_cnode **, -struct reiserfs_journal_list *, unsigned long, int); +static void remove_journal_hash(struct super_block *, + struct reiserfs_journal_cnode **, + struct reiserfs_journal_list *, unsigned long, + int); /* ** once all the real blocks have been flushed, it is safe to remove them from the ** journal list for this transaction. Aside from freeing the cnode, this also allows the ** block to be reallocated for data blocks if it had been deleted. */ -static void remove_all_from_journal_list(struct super_block *p_s_sb, struct reiserfs_journal_list *jl, int debug) { - struct reiserfs_journal *journal = SB_JOURNAL (p_s_sb); - struct reiserfs_journal_cnode *cn, *last ; - cn = jl->j_realblock ; - - /* which is better, to lock once around the whole loop, or - ** to lock for each call to remove_journal_hash? - */ - while(cn) { - if (cn->blocknr != 0) { - if (debug) { - reiserfs_warning (p_s_sb, "block %u, bh is %d, state %ld", cn->blocknr, - cn->bh ? 1: 0, cn->state) ; - } - cn->state = 0 ; - remove_journal_hash(p_s_sb, journal->j_list_hash_table, jl, cn->blocknr, 1) ; - } - last = cn ; - cn = cn->next ; - free_cnode(p_s_sb, last) ; - } - jl->j_realblock = NULL ; +static void remove_all_from_journal_list(struct super_block *p_s_sb, + struct reiserfs_journal_list *jl, + int debug) +{ + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); + struct reiserfs_journal_cnode *cn, *last; + cn = jl->j_realblock; + + /* which is better, to lock once around the whole loop, or + ** to lock for each call to remove_journal_hash? + */ + while (cn) { + if (cn->blocknr != 0) { + if (debug) { + reiserfs_warning(p_s_sb, + "block %u, bh is %d, state %ld", + cn->blocknr, cn->bh ? 1 : 0, + cn->state); + } + cn->state = 0; + remove_journal_hash(p_s_sb, journal->j_list_hash_table, + jl, cn->blocknr, 1); + } + last = cn; + cn = cn->next; + free_cnode(p_s_sb, last); + } + jl->j_realblock = NULL; } /* @@ -1115,98 +1195,107 @@ static void remove_all_from_journal_list(struct super_block *p_s_sb, struct reis ** called by flush_journal_list, before it calls remove_all_from_journal_list ** */ -static int _update_journal_header_block(struct super_block *p_s_sb, unsigned long offset, unsigned long trans_id) { - struct reiserfs_journal_header *jh ; - struct reiserfs_journal *journal = SB_JOURNAL (p_s_sb); +static int _update_journal_header_block(struct super_block *p_s_sb, + unsigned long offset, + unsigned long trans_id) +{ + struct reiserfs_journal_header *jh; + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); - if (reiserfs_is_journal_aborted (journal)) - return -EIO; + if (reiserfs_is_journal_aborted(journal)) + return -EIO; - if (trans_id >= journal->j_last_flush_trans_id) { - if (buffer_locked((journal->j_header_bh))) { - wait_on_buffer((journal->j_header_bh)) ; - if (unlikely (!buffer_uptodate(journal->j_header_bh))) { + if (trans_id >= journal->j_last_flush_trans_id) { + if (buffer_locked((journal->j_header_bh))) { + wait_on_buffer((journal->j_header_bh)); + if (unlikely(!buffer_uptodate(journal->j_header_bh))) { #ifdef CONFIG_REISERFS_CHECK - reiserfs_warning (p_s_sb, "journal-699: buffer write failed") ; + reiserfs_warning(p_s_sb, + "journal-699: buffer write failed"); #endif - return -EIO; - } - } - journal->j_last_flush_trans_id = trans_id ; - journal->j_first_unflushed_offset = offset ; - jh = (struct reiserfs_journal_header *)(journal->j_header_bh->b_data) ; - jh->j_last_flush_trans_id = cpu_to_le32(trans_id) ; - jh->j_first_unflushed_offset = cpu_to_le32(offset) ; - jh->j_mount_id = cpu_to_le32(journal->j_mount_id) ; - - if (reiserfs_barrier_flush(p_s_sb)) { - int ret; - lock_buffer(journal->j_header_bh); - ret = submit_barrier_buffer(journal->j_header_bh); - if (ret == -EOPNOTSUPP) { - set_buffer_uptodate(journal->j_header_bh); - disable_barrier(p_s_sb); - goto sync; - } - wait_on_buffer(journal->j_header_bh); - check_barrier_completion(p_s_sb, journal->j_header_bh); - } else { -sync: - set_buffer_dirty(journal->j_header_bh) ; - sync_dirty_buffer(journal->j_header_bh) ; - } - if (!buffer_uptodate(journal->j_header_bh)) { - reiserfs_warning (p_s_sb, "journal-837: IO error during journal replay"); - return -EIO ; - } - } - return 0 ; -} - -static int update_journal_header_block(struct super_block *p_s_sb, - unsigned long offset, - unsigned long trans_id) { - return _update_journal_header_block(p_s_sb, offset, trans_id); + return -EIO; + } + } + journal->j_last_flush_trans_id = trans_id; + journal->j_first_unflushed_offset = offset; + jh = (struct reiserfs_journal_header *)(journal->j_header_bh-> + b_data); + jh->j_last_flush_trans_id = cpu_to_le32(trans_id); + jh->j_first_unflushed_offset = cpu_to_le32(offset); + jh->j_mount_id = cpu_to_le32(journal->j_mount_id); + + if (reiserfs_barrier_flush(p_s_sb)) { + int ret; + lock_buffer(journal->j_header_bh); + ret = submit_barrier_buffer(journal->j_header_bh); + if (ret == -EOPNOTSUPP) { + set_buffer_uptodate(journal->j_header_bh); + disable_barrier(p_s_sb); + goto sync; + } + wait_on_buffer(journal->j_header_bh); + check_barrier_completion(p_s_sb, journal->j_header_bh); + } else { + sync: + set_buffer_dirty(journal->j_header_bh); + sync_dirty_buffer(journal->j_header_bh); + } + if (!buffer_uptodate(journal->j_header_bh)) { + reiserfs_warning(p_s_sb, + "journal-837: IO error during journal replay"); + return -EIO; + } + } + return 0; } + +static int update_journal_header_block(struct super_block *p_s_sb, + unsigned long offset, + unsigned long trans_id) +{ + return _update_journal_header_block(p_s_sb, offset, trans_id); +} + /* ** flush any and all journal lists older than you are ** can only be called from flush_journal_list */ static int flush_older_journal_lists(struct super_block *p_s_sb, - struct reiserfs_journal_list *jl) -{ - struct list_head *entry; - struct reiserfs_journal_list *other_jl ; - struct reiserfs_journal *journal = SB_JOURNAL (p_s_sb); - unsigned long trans_id = jl->j_trans_id; - - /* we know we are the only ones flushing things, no extra race - * protection is required. - */ -restart: - entry = journal->j_journal_list.next; - /* Did we wrap? */ - if (entry == &journal->j_journal_list) - return 0; - other_jl = JOURNAL_LIST_ENTRY(entry); - if (other_jl->j_trans_id < trans_id) { - BUG_ON (other_jl->j_refcount <= 0); - /* do not flush all */ - flush_journal_list(p_s_sb, other_jl, 0) ; - - /* other_jl is now deleted from the list */ - goto restart; - } - return 0 ; + struct reiserfs_journal_list *jl) +{ + struct list_head *entry; + struct reiserfs_journal_list *other_jl; + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); + unsigned long trans_id = jl->j_trans_id; + + /* we know we are the only ones flushing things, no extra race + * protection is required. + */ + restart: + entry = journal->j_journal_list.next; + /* Did we wrap? */ + if (entry == &journal->j_journal_list) + return 0; + other_jl = JOURNAL_LIST_ENTRY(entry); + if (other_jl->j_trans_id < trans_id) { + BUG_ON(other_jl->j_refcount <= 0); + /* do not flush all */ + flush_journal_list(p_s_sb, other_jl, 0); + + /* other_jl is now deleted from the list */ + goto restart; + } + return 0; } static void del_from_work_list(struct super_block *s, - struct reiserfs_journal_list *jl) { - struct reiserfs_journal *journal = SB_JOURNAL (s); - if (!list_empty(&jl->j_working_list)) { - list_del_init(&jl->j_working_list); - journal->j_num_work_lists--; - } + struct reiserfs_journal_list *jl) +{ + struct reiserfs_journal *journal = SB_JOURNAL(s); + if (!list_empty(&jl->j_working_list)) { + list_del_init(&jl->j_working_list); + journal->j_num_work_lists--; + } } /* flush a journal list, both commit and real blocks @@ -1218,383 +1307,407 @@ static void del_from_work_list(struct super_block *s, ** and the journal is locked. That means it can only be called from ** do_journal_end, or by journal_release */ -static int flush_journal_list(struct super_block *s, - struct reiserfs_journal_list *jl, int flushall) { - struct reiserfs_journal_list *pjl ; - struct reiserfs_journal_cnode *cn, *last ; - int count ; - int was_jwait = 0 ; - int was_dirty = 0 ; - struct buffer_head *saved_bh ; - unsigned long j_len_saved = jl->j_len ; - struct reiserfs_journal *journal = SB_JOURNAL (s); - int err = 0; - - BUG_ON (j_len_saved <= 0); - - if (atomic_read(&journal->j_wcount) != 0) { - reiserfs_warning(s, "clm-2048: flush_journal_list called with wcount %d", - atomic_read(&journal->j_wcount)) ; - } - BUG_ON (jl->j_trans_id == 0); - - /* if flushall == 0, the lock is already held */ - if (flushall) { - down(&journal->j_flush_sem); - } else if (!down_trylock(&journal->j_flush_sem)) { - BUG(); - } - - count = 0 ; - if (j_len_saved > journal->j_trans_max) { - reiserfs_panic(s, "journal-715: flush_journal_list, length is %lu, trans id %lu\n", j_len_saved, jl->j_trans_id); - return 0 ; - } - - /* if all the work is already done, get out of here */ - if (atomic_read(&(jl->j_nonzerolen)) <= 0 && - atomic_read(&(jl->j_commit_left)) <= 0) { - goto flush_older_and_return ; - } - - /* start by putting the commit list on disk. This will also flush - ** the commit lists of any olders transactions - */ - flush_commit_list(s, jl, 1) ; - - if (!(jl->j_state & LIST_DIRTY) && !reiserfs_is_journal_aborted (journal)) - BUG(); - - /* are we done now? */ - if (atomic_read(&(jl->j_nonzerolen)) <= 0 && - atomic_read(&(jl->j_commit_left)) <= 0) { - goto flush_older_and_return ; - } - - /* loop through each cnode, see if we need to write it, - ** or wait on a more recent transaction, or just ignore it - */ - if (atomic_read(&(journal->j_wcount)) != 0) { - reiserfs_panic(s, "journal-844: panic journal list is flushing, wcount is not 0\n") ; - } - cn = jl->j_realblock ; - while(cn) { - was_jwait = 0 ; - was_dirty = 0 ; - saved_bh = NULL ; - /* blocknr of 0 is no longer in the hash, ignore it */ - if (cn->blocknr == 0) { - goto free_cnode ; - } - - /* This transaction failed commit. Don't write out to the disk */ - if (!(jl->j_state & LIST_DIRTY)) - goto free_cnode; - - pjl = find_newer_jl_for_cn(cn) ; - /* the order is important here. We check pjl to make sure we - ** don't clear BH_JDirty_wait if we aren't the one writing this - ** block to disk - */ - if (!pjl && cn->bh) { - saved_bh = cn->bh ; - - /* we do this to make sure nobody releases the buffer while - ** we are working with it - */ - get_bh(saved_bh) ; - - if (buffer_journal_dirty(saved_bh)) { - BUG_ON (!can_dirty (cn)); - was_jwait = 1 ; - was_dirty = 1 ; - } else if (can_dirty(cn)) { - /* everything with !pjl && jwait should be writable */ - BUG(); - } - } - - /* if someone has this block in a newer transaction, just make - ** sure they are commited, and don't try writing it to disk - */ - if (pjl) { - if (atomic_read(&pjl->j_commit_left)) - flush_commit_list(s, pjl, 1) ; - goto free_cnode ; - } - - /* bh == NULL when the block got to disk on its own, OR, - ** the block got freed in a future transaction - */ - if (saved_bh == NULL) { - goto free_cnode ; - } - - /* this should never happen. kupdate_one_transaction has this list - ** locked while it works, so we should never see a buffer here that - ** is not marked JDirty_wait - */ - if ((!was_jwait) && !buffer_locked(saved_bh)) { - reiserfs_warning (s, "journal-813: BAD! buffer %llu %cdirty %cjwait, " - "not in a newer tranasction", - (unsigned long long)saved_bh->b_blocknr, - was_dirty ? ' ' : '!', was_jwait ? ' ' : '!') ; - } - if (was_dirty) { - /* we inc again because saved_bh gets decremented at free_cnode */ - get_bh(saved_bh) ; - set_bit(BLOCK_NEEDS_FLUSH, &cn->state) ; - lock_buffer(saved_bh); - BUG_ON (cn->blocknr != saved_bh->b_blocknr); - if (buffer_dirty(saved_bh)) - submit_logged_buffer(saved_bh) ; - else - unlock_buffer(saved_bh); - count++ ; - } else { - reiserfs_warning (s, "clm-2082: Unable to flush buffer %llu in %s", - (unsigned long long)saved_bh->b_blocknr, __FUNCTION__); - } -free_cnode: - last = cn ; - cn = cn->next ; - if (saved_bh) { - /* we incremented this to keep others from taking the buffer head away */ - put_bh(saved_bh) ; - if (atomic_read(&(saved_bh->b_count)) < 0) { - reiserfs_warning (s, "journal-945: saved_bh->b_count < 0"); - } - } - } - if (count > 0) { - cn = jl->j_realblock ; - while(cn) { - if (test_bit(BLOCK_NEEDS_FLUSH, &cn->state)) { - if (!cn->bh) { - reiserfs_panic(s, "journal-1011: cn->bh is NULL\n") ; - } - wait_on_buffer(cn->bh) ; - if (!cn->bh) { - reiserfs_panic(s, "journal-1012: cn->bh is NULL\n") ; - } - if (unlikely (!buffer_uptodate(cn->bh))) { +static int flush_journal_list(struct super_block *s, + struct reiserfs_journal_list *jl, int flushall) +{ + struct reiserfs_journal_list *pjl; + struct reiserfs_journal_cnode *cn, *last; + int count; + int was_jwait = 0; + int was_dirty = 0; + struct buffer_head *saved_bh; + unsigned long j_len_saved = jl->j_len; + struct reiserfs_journal *journal = SB_JOURNAL(s); + int err = 0; + + BUG_ON(j_len_saved <= 0); + + if (atomic_read(&journal->j_wcount) != 0) { + reiserfs_warning(s, + "clm-2048: flush_journal_list called with wcount %d", + atomic_read(&journal->j_wcount)); + } + BUG_ON(jl->j_trans_id == 0); + + /* if flushall == 0, the lock is already held */ + if (flushall) { + down(&journal->j_flush_sem); + } else if (!down_trylock(&journal->j_flush_sem)) { + BUG(); + } + + count = 0; + if (j_len_saved > journal->j_trans_max) { + reiserfs_panic(s, + "journal-715: flush_journal_list, length is %lu, trans id %lu\n", + j_len_saved, jl->j_trans_id); + return 0; + } + + get_fs_excl(); + + /* if all the work is already done, get out of here */ + if (atomic_read(&(jl->j_nonzerolen)) <= 0 && + atomic_read(&(jl->j_commit_left)) <= 0) { + goto flush_older_and_return; + } + + /* start by putting the commit list on disk. This will also flush + ** the commit lists of any olders transactions + */ + flush_commit_list(s, jl, 1); + + if (!(jl->j_state & LIST_DIRTY) + && !reiserfs_is_journal_aborted(journal)) + BUG(); + + /* are we done now? */ + if (atomic_read(&(jl->j_nonzerolen)) <= 0 && + atomic_read(&(jl->j_commit_left)) <= 0) { + goto flush_older_and_return; + } + + /* loop through each cnode, see if we need to write it, + ** or wait on a more recent transaction, or just ignore it + */ + if (atomic_read(&(journal->j_wcount)) != 0) { + reiserfs_panic(s, + "journal-844: panic journal list is flushing, wcount is not 0\n"); + } + cn = jl->j_realblock; + while (cn) { + was_jwait = 0; + was_dirty = 0; + saved_bh = NULL; + /* blocknr of 0 is no longer in the hash, ignore it */ + if (cn->blocknr == 0) { + goto free_cnode; + } + + /* This transaction failed commit. Don't write out to the disk */ + if (!(jl->j_state & LIST_DIRTY)) + goto free_cnode; + + pjl = find_newer_jl_for_cn(cn); + /* the order is important here. We check pjl to make sure we + ** don't clear BH_JDirty_wait if we aren't the one writing this + ** block to disk + */ + if (!pjl && cn->bh) { + saved_bh = cn->bh; + + /* we do this to make sure nobody releases the buffer while + ** we are working with it + */ + get_bh(saved_bh); + + if (buffer_journal_dirty(saved_bh)) { + BUG_ON(!can_dirty(cn)); + was_jwait = 1; + was_dirty = 1; + } else if (can_dirty(cn)) { + /* everything with !pjl && jwait should be writable */ + BUG(); + } + } + + /* if someone has this block in a newer transaction, just make + ** sure they are commited, and don't try writing it to disk + */ + if (pjl) { + if (atomic_read(&pjl->j_commit_left)) + flush_commit_list(s, pjl, 1); + goto free_cnode; + } + + /* bh == NULL when the block got to disk on its own, OR, + ** the block got freed in a future transaction + */ + if (saved_bh == NULL) { + goto free_cnode; + } + + /* this should never happen. kupdate_one_transaction has this list + ** locked while it works, so we should never see a buffer here that + ** is not marked JDirty_wait + */ + if ((!was_jwait) && !buffer_locked(saved_bh)) { + reiserfs_warning(s, + "journal-813: BAD! buffer %llu %cdirty %cjwait, " + "not in a newer tranasction", + (unsigned long long)saved_bh-> + b_blocknr, was_dirty ? ' ' : '!', + was_jwait ? ' ' : '!'); + } + if (was_dirty) { + /* we inc again because saved_bh gets decremented at free_cnode */ + get_bh(saved_bh); + set_bit(BLOCK_NEEDS_FLUSH, &cn->state); + lock_buffer(saved_bh); + BUG_ON(cn->blocknr != saved_bh->b_blocknr); + if (buffer_dirty(saved_bh)) + submit_logged_buffer(saved_bh); + else + unlock_buffer(saved_bh); + count++; + } else { + reiserfs_warning(s, + "clm-2082: Unable to flush buffer %llu in %s", + (unsigned long long)saved_bh-> + b_blocknr, __FUNCTION__); + } + free_cnode: + last = cn; + cn = cn->next; + if (saved_bh) { + /* we incremented this to keep others from taking the buffer head away */ + put_bh(saved_bh); + if (atomic_read(&(saved_bh->b_count)) < 0) { + reiserfs_warning(s, + "journal-945: saved_bh->b_count < 0"); + } + } + } + if (count > 0) { + cn = jl->j_realblock; + while (cn) { + if (test_bit(BLOCK_NEEDS_FLUSH, &cn->state)) { + if (!cn->bh) { + reiserfs_panic(s, + "journal-1011: cn->bh is NULL\n"); + } + wait_on_buffer(cn->bh); + if (!cn->bh) { + reiserfs_panic(s, + "journal-1012: cn->bh is NULL\n"); + } + if (unlikely(!buffer_uptodate(cn->bh))) { #ifdef CONFIG_REISERFS_CHECK - reiserfs_warning(s, "journal-949: buffer write failed\n") ; + reiserfs_warning(s, + "journal-949: buffer write failed\n"); #endif - err = -EIO; - } - /* note, we must clear the JDirty_wait bit after the up to date - ** check, otherwise we race against our flushpage routine - */ - BUG_ON (!test_clear_buffer_journal_dirty (cn->bh)); - - /* undo the inc from journal_mark_dirty */ - put_bh(cn->bh) ; - brelse(cn->bh) ; - } - cn = cn->next ; - } - } - - if (err) - reiserfs_abort (s, -EIO, "Write error while pushing transaction to disk in %s", __FUNCTION__); -flush_older_and_return: - - - /* before we can update the journal header block, we _must_ flush all - ** real blocks from all older transactions to disk. This is because - ** once the header block is updated, this transaction will not be - ** replayed after a crash - */ - if (flushall) { - flush_older_journal_lists(s, jl); - } - - err = journal->j_errno; - /* before we can remove everything from the hash tables for this - ** transaction, we must make sure it can never be replayed - ** - ** since we are only called from do_journal_end, we know for sure there - ** are no allocations going on while we are flushing journal lists. So, - ** we only need to update the journal header block for the last list - ** being flushed - */ - if (!err && flushall) { - err = update_journal_header_block(s, (jl->j_start + jl->j_len + 2) % SB_ONDISK_JOURNAL_SIZE(s), jl->j_trans_id) ; - if (err) - reiserfs_abort (s, -EIO, "Write error while updating journal header in %s", __FUNCTION__); - } - remove_all_from_journal_list(s, jl, 0) ; - list_del_init(&jl->j_list); - journal->j_num_lists--; - del_from_work_list(s, jl); - - if (journal->j_last_flush_id != 0 && - (jl->j_trans_id - journal->j_last_flush_id) != 1) { - reiserfs_warning(s, "clm-2201: last flush %lu, current %lu", - journal->j_last_flush_id, - jl->j_trans_id); - } - journal->j_last_flush_id = jl->j_trans_id; - - /* not strictly required since we are freeing the list, but it should - * help find code using dead lists later on - */ - jl->j_len = 0 ; - atomic_set(&(jl->j_nonzerolen), 0) ; - jl->j_start = 0 ; - jl->j_realblock = NULL ; - jl->j_commit_bh = NULL ; - jl->j_trans_id = 0 ; - jl->j_state = 0; - put_journal_list(s, jl); - if (flushall) - up(&journal->j_flush_sem); - return err ; -} + err = -EIO; + } + /* note, we must clear the JDirty_wait bit after the up to date + ** check, otherwise we race against our flushpage routine + */ + BUG_ON(!test_clear_buffer_journal_dirty + (cn->bh)); + + /* undo the inc from journal_mark_dirty */ + put_bh(cn->bh); + brelse(cn->bh); + } + cn = cn->next; + } + } + + if (err) + reiserfs_abort(s, -EIO, + "Write error while pushing transaction to disk in %s", + __FUNCTION__); + flush_older_and_return: + + /* before we can update the journal header block, we _must_ flush all + ** real blocks from all older transactions to disk. This is because + ** once the header block is updated, this transaction will not be + ** replayed after a crash + */ + if (flushall) { + flush_older_journal_lists(s, jl); + } + + err = journal->j_errno; + /* before we can remove everything from the hash tables for this + ** transaction, we must make sure it can never be replayed + ** + ** since we are only called from do_journal_end, we know for sure there + ** are no allocations going on while we are flushing journal lists. So, + ** we only need to update the journal header block for the last list + ** being flushed + */ + if (!err && flushall) { + err = + update_journal_header_block(s, + (jl->j_start + jl->j_len + + 2) % SB_ONDISK_JOURNAL_SIZE(s), + jl->j_trans_id); + if (err) + reiserfs_abort(s, -EIO, + "Write error while updating journal header in %s", + __FUNCTION__); + } + remove_all_from_journal_list(s, jl, 0); + list_del_init(&jl->j_list); + journal->j_num_lists--; + del_from_work_list(s, jl); + + if (journal->j_last_flush_id != 0 && + (jl->j_trans_id - journal->j_last_flush_id) != 1) { + reiserfs_warning(s, "clm-2201: last flush %lu, current %lu", + journal->j_last_flush_id, jl->j_trans_id); + } + journal->j_last_flush_id = jl->j_trans_id; + + /* not strictly required since we are freeing the list, but it should + * help find code using dead lists later on + */ + jl->j_len = 0; + atomic_set(&(jl->j_nonzerolen), 0); + jl->j_start = 0; + jl->j_realblock = NULL; + jl->j_commit_bh = NULL; + jl->j_trans_id = 0; + jl->j_state = 0; + put_journal_list(s, jl); + if (flushall) + up(&journal->j_flush_sem); + put_fs_excl(); + return err; +} static int write_one_transaction(struct super_block *s, - struct reiserfs_journal_list *jl, + struct reiserfs_journal_list *jl, struct buffer_chunk *chunk) { - struct reiserfs_journal_cnode *cn; - int ret = 0 ; - - jl->j_state |= LIST_TOUCHED; - del_from_work_list(s, jl); - if (jl->j_len == 0 || atomic_read(&jl->j_nonzerolen) == 0) { - return 0; - } - - cn = jl->j_realblock ; - while(cn) { - /* if the blocknr == 0, this has been cleared from the hash, - ** skip it - */ - if (cn->blocknr == 0) { - goto next ; - } - if (cn->bh && can_dirty(cn) && buffer_dirty(cn->bh)) { - struct buffer_head *tmp_bh; - /* we can race against journal_mark_freed when we try - * to lock_buffer(cn->bh), so we have to inc the buffer - * count, and recheck things after locking - */ - tmp_bh = cn->bh; - get_bh(tmp_bh); - lock_buffer(tmp_bh); - if (cn->bh && can_dirty(cn) && buffer_dirty(tmp_bh)) { - if (!buffer_journal_dirty(tmp_bh) || - buffer_journal_prepared(tmp_bh)) - BUG(); - add_to_chunk(chunk, tmp_bh, NULL, write_chunk); - ret++; - } else { - /* note, cn->bh might be null now */ - unlock_buffer(tmp_bh); - } - put_bh(tmp_bh); - } -next: - cn = cn->next ; - cond_resched(); - } - return ret ; + struct reiserfs_journal_cnode *cn; + int ret = 0; + + jl->j_state |= LIST_TOUCHED; + del_from_work_list(s, jl); + if (jl->j_len == 0 || atomic_read(&jl->j_nonzerolen) == 0) { + return 0; + } + + cn = jl->j_realblock; + while (cn) { + /* if the blocknr == 0, this has been cleared from the hash, + ** skip it + */ + if (cn->blocknr == 0) { + goto next; + } + if (cn->bh && can_dirty(cn) && buffer_dirty(cn->bh)) { + struct buffer_head *tmp_bh; + /* we can race against journal_mark_freed when we try + * to lock_buffer(cn->bh), so we have to inc the buffer + * count, and recheck things after locking + */ + tmp_bh = cn->bh; + get_bh(tmp_bh); + lock_buffer(tmp_bh); + if (cn->bh && can_dirty(cn) && buffer_dirty(tmp_bh)) { + if (!buffer_journal_dirty(tmp_bh) || + buffer_journal_prepared(tmp_bh)) + BUG(); + add_to_chunk(chunk, tmp_bh, NULL, write_chunk); + ret++; + } else { + /* note, cn->bh might be null now */ + unlock_buffer(tmp_bh); + } + put_bh(tmp_bh); + } + next: + cn = cn->next; + cond_resched(); + } + return ret; } /* used by flush_commit_list */ static int dirty_one_transaction(struct super_block *s, - struct reiserfs_journal_list *jl) -{ - struct reiserfs_journal_cnode *cn; - struct reiserfs_journal_list *pjl; - int ret = 0 ; - - jl->j_state |= LIST_DIRTY; - cn = jl->j_realblock ; - while(cn) { - /* look for a more recent transaction that logged this - ** buffer. Only the most recent transaction with a buffer in - ** it is allowed to send that buffer to disk - */ - pjl = find_newer_jl_for_cn(cn) ; - if (!pjl && cn->blocknr && cn->bh && buffer_journal_dirty(cn->bh)) - { - BUG_ON (!can_dirty(cn)); - /* if the buffer is prepared, it will either be logged - * or restored. If restored, we need to make sure - * it actually gets marked dirty - */ - clear_buffer_journal_new (cn->bh); - if (buffer_journal_prepared (cn->bh)) { - set_buffer_journal_restore_dirty (cn->bh); - } else { - set_buffer_journal_test (cn->bh); - mark_buffer_dirty(cn->bh); - } - } - cn = cn->next ; - } - return ret ; + struct reiserfs_journal_list *jl) +{ + struct reiserfs_journal_cnode *cn; + struct reiserfs_journal_list *pjl; + int ret = 0; + + jl->j_state |= LIST_DIRTY; + cn = jl->j_realblock; + while (cn) { + /* look for a more recent transaction that logged this + ** buffer. Only the most recent transaction with a buffer in + ** it is allowed to send that buffer to disk + */ + pjl = find_newer_jl_for_cn(cn); + if (!pjl && cn->blocknr && cn->bh + && buffer_journal_dirty(cn->bh)) { + BUG_ON(!can_dirty(cn)); + /* if the buffer is prepared, it will either be logged + * or restored. If restored, we need to make sure + * it actually gets marked dirty + */ + clear_buffer_journal_new(cn->bh); + if (buffer_journal_prepared(cn->bh)) { + set_buffer_journal_restore_dirty(cn->bh); + } else { + set_buffer_journal_test(cn->bh); + mark_buffer_dirty(cn->bh); + } + } + cn = cn->next; + } + return ret; } static int kupdate_transactions(struct super_block *s, - struct reiserfs_journal_list *jl, - struct reiserfs_journal_list **next_jl, - unsigned long *next_trans_id, - int num_blocks, - int num_trans) { - int ret = 0; - int written = 0 ; - int transactions_flushed = 0; - unsigned long orig_trans_id = jl->j_trans_id; - struct buffer_chunk chunk; - struct list_head *entry; - struct reiserfs_journal *journal = SB_JOURNAL (s); - chunk.nr = 0; - - down(&journal->j_flush_sem); - if (!journal_list_still_alive(s, orig_trans_id)) { - goto done; - } - - /* we've got j_flush_sem held, nobody is going to delete any - * of these lists out from underneath us - */ - while((num_trans && transactions_flushed < num_trans) || - (!num_trans && written < num_blocks)) { - - if (jl->j_len == 0 || (jl->j_state & LIST_TOUCHED) || - atomic_read(&jl->j_commit_left) || !(jl->j_state & LIST_DIRTY)) - { - del_from_work_list(s, jl); - break; - } - ret = write_one_transaction(s, jl, &chunk); - - if (ret < 0) - goto done; - transactions_flushed++; - written += ret; - entry = jl->j_list.next; - - /* did we wrap? */ - if (entry == &journal->j_journal_list) { - break; - } - jl = JOURNAL_LIST_ENTRY(entry); - - /* don't bother with older transactions */ - if (jl->j_trans_id <= orig_trans_id) - break; - } - if (chunk.nr) { - write_chunk(&chunk); - } - -done: - up(&journal->j_flush_sem); - return ret; + struct reiserfs_journal_list *jl, + struct reiserfs_journal_list **next_jl, + unsigned long *next_trans_id, + int num_blocks, int num_trans) +{ + int ret = 0; + int written = 0; + int transactions_flushed = 0; + unsigned long orig_trans_id = jl->j_trans_id; + struct buffer_chunk chunk; + struct list_head *entry; + struct reiserfs_journal *journal = SB_JOURNAL(s); + chunk.nr = 0; + + down(&journal->j_flush_sem); + if (!journal_list_still_alive(s, orig_trans_id)) { + goto done; + } + + /* we've got j_flush_sem held, nobody is going to delete any + * of these lists out from underneath us + */ + while ((num_trans && transactions_flushed < num_trans) || + (!num_trans && written < num_blocks)) { + + if (jl->j_len == 0 || (jl->j_state & LIST_TOUCHED) || + atomic_read(&jl->j_commit_left) + || !(jl->j_state & LIST_DIRTY)) { + del_from_work_list(s, jl); + break; + } + ret = write_one_transaction(s, jl, &chunk); + + if (ret < 0) + goto done; + transactions_flushed++; + written += ret; + entry = jl->j_list.next; + + /* did we wrap? */ + if (entry == &journal->j_journal_list) { + break; + } + jl = JOURNAL_LIST_ENTRY(entry); + + /* don't bother with older transactions */ + if (jl->j_trans_id <= orig_trans_id) + break; + } + if (chunk.nr) { + write_chunk(&chunk); + } + + done: + up(&journal->j_flush_sem); + return ret; } /* for o_sync and fsync heavy applications, they tend to use @@ -1607,47 +1720,48 @@ done: ** list updates the header block */ static int flush_used_journal_lists(struct super_block *s, - struct reiserfs_journal_list *jl) { - unsigned long len = 0; - unsigned long cur_len; - int ret; - int i; - int limit = 256; - struct reiserfs_journal_list *tjl; - struct reiserfs_journal_list *flush_jl; - unsigned long trans_id; - struct reiserfs_journal *journal = SB_JOURNAL (s); - - flush_jl = tjl = jl; - - /* in data logging mode, try harder to flush a lot of blocks */ - if (reiserfs_data_log(s)) - limit = 1024; - /* flush for 256 transactions or limit blocks, whichever comes first */ - for(i = 0 ; i < 256 && len < limit ; i++) { - if (atomic_read(&tjl->j_commit_left) || - tjl->j_trans_id < jl->j_trans_id) { - break; - } - cur_len = atomic_read(&tjl->j_nonzerolen); - if (cur_len > 0) { - tjl->j_state &= ~LIST_TOUCHED; - } - len += cur_len; - flush_jl = tjl; - if (tjl->j_list.next == &journal->j_journal_list) - break; - tjl = JOURNAL_LIST_ENTRY(tjl->j_list.next); - } - /* try to find a group of blocks we can flush across all the - ** transactions, but only bother if we've actually spanned - ** across multiple lists - */ - if (flush_jl != jl) { - ret = kupdate_transactions(s, jl, &tjl, &trans_id, len, i); - } - flush_journal_list(s, flush_jl, 1); - return 0; + struct reiserfs_journal_list *jl) +{ + unsigned long len = 0; + unsigned long cur_len; + int ret; + int i; + int limit = 256; + struct reiserfs_journal_list *tjl; + struct reiserfs_journal_list *flush_jl; + unsigned long trans_id; + struct reiserfs_journal *journal = SB_JOURNAL(s); + + flush_jl = tjl = jl; + + /* in data logging mode, try harder to flush a lot of blocks */ + if (reiserfs_data_log(s)) + limit = 1024; + /* flush for 256 transactions or limit blocks, whichever comes first */ + for (i = 0; i < 256 && len < limit; i++) { + if (atomic_read(&tjl->j_commit_left) || + tjl->j_trans_id < jl->j_trans_id) { + break; + } + cur_len = atomic_read(&tjl->j_nonzerolen); + if (cur_len > 0) { + tjl->j_state &= ~LIST_TOUCHED; + } + len += cur_len; + flush_jl = tjl; + if (tjl->j_list.next == &journal->j_journal_list) + break; + tjl = JOURNAL_LIST_ENTRY(tjl->j_list.next); + } + /* try to find a group of blocks we can flush across all the + ** transactions, but only bother if we've actually spanned + ** across multiple lists + */ + if (flush_jl != jl) { + ret = kupdate_transactions(s, jl, &tjl, &trans_id, len, i); + } + flush_journal_list(s, flush_jl, 1); + return 0; } /* @@ -1655,207 +1769,248 @@ static int flush_used_journal_lists(struct super_block *s, ** only touchs the hnext and hprev pointers. */ void remove_journal_hash(struct super_block *sb, - struct reiserfs_journal_cnode **table, - struct reiserfs_journal_list *jl, - unsigned long block, int remove_freed) -{ - struct reiserfs_journal_cnode *cur ; - struct reiserfs_journal_cnode **head ; - - head= &(journal_hash(table, sb, block)) ; - if (!head) { - return ; - } - cur = *head ; - while(cur) { - if (cur->blocknr == block && cur->sb == sb && (jl == NULL || jl == cur->jlist) && - (!test_bit(BLOCK_FREED, &cur->state) || remove_freed)) { - if (cur->hnext) { - cur->hnext->hprev = cur->hprev ; - } - if (cur->hprev) { - cur->hprev->hnext = cur->hnext ; - } else { - *head = cur->hnext ; - } - cur->blocknr = 0 ; - cur->sb = NULL ; - cur->state = 0 ; - if (cur->bh && cur->jlist) /* anybody who clears the cur->bh will also dec the nonzerolen */ - atomic_dec(&(cur->jlist->j_nonzerolen)) ; - cur->bh = NULL ; - cur->jlist = NULL ; - } - cur = cur->hnext ; - } -} - -static void free_journal_ram(struct super_block *p_s_sb) { - struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); - reiserfs_kfree(journal->j_current_jl, - sizeof(struct reiserfs_journal_list), p_s_sb); - journal->j_num_lists--; - - vfree(journal->j_cnode_free_orig) ; - free_list_bitmaps(p_s_sb, journal->j_list_bitmap) ; - free_bitmap_nodes(p_s_sb) ; /* must be after free_list_bitmaps */ - if (journal->j_header_bh) { - brelse(journal->j_header_bh) ; - } - /* j_header_bh is on the journal dev, make sure not to release the journal - * dev until we brelse j_header_bh - */ - release_journal_dev(p_s_sb, journal); - vfree(journal) ; + struct reiserfs_journal_cnode **table, + struct reiserfs_journal_list *jl, + unsigned long block, int remove_freed) +{ + struct reiserfs_journal_cnode *cur; + struct reiserfs_journal_cnode **head; + + head = &(journal_hash(table, sb, block)); + if (!head) { + return; + } + cur = *head; + while (cur) { + if (cur->blocknr == block && cur->sb == sb + && (jl == NULL || jl == cur->jlist) + && (!test_bit(BLOCK_FREED, &cur->state) || remove_freed)) { + if (cur->hnext) { + cur->hnext->hprev = cur->hprev; + } + if (cur->hprev) { + cur->hprev->hnext = cur->hnext; + } else { + *head = cur->hnext; + } + cur->blocknr = 0; + cur->sb = NULL; + cur->state = 0; + if (cur->bh && cur->jlist) /* anybody who clears the cur->bh will also dec the nonzerolen */ + atomic_dec(&(cur->jlist->j_nonzerolen)); + cur->bh = NULL; + cur->jlist = NULL; + } + cur = cur->hnext; + } +} + +static void free_journal_ram(struct super_block *p_s_sb) +{ + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); + reiserfs_kfree(journal->j_current_jl, + sizeof(struct reiserfs_journal_list), p_s_sb); + journal->j_num_lists--; + + vfree(journal->j_cnode_free_orig); + free_list_bitmaps(p_s_sb, journal->j_list_bitmap); + free_bitmap_nodes(p_s_sb); /* must be after free_list_bitmaps */ + if (journal->j_header_bh) { + brelse(journal->j_header_bh); + } + /* j_header_bh is on the journal dev, make sure not to release the journal + * dev until we brelse j_header_bh + */ + release_journal_dev(p_s_sb, journal); + vfree(journal); } /* ** call on unmount. Only set error to 1 if you haven't made your way out ** of read_super() yet. Any other caller must keep error at 0. */ -static int do_journal_release(struct reiserfs_transaction_handle *th, struct super_block *p_s_sb, int error) { - struct reiserfs_transaction_handle myth ; - int flushed = 0; - struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); - - /* we only want to flush out transactions if we were called with error == 0 - */ - if (!error && !(p_s_sb->s_flags & MS_RDONLY)) { - /* end the current trans */ - BUG_ON (!th->t_trans_id); - do_journal_end(th, p_s_sb,10, FLUSH_ALL) ; - - /* make sure something gets logged to force our way into the flush code */ - if (!journal_join(&myth, p_s_sb, 1)) { - reiserfs_prepare_for_journal(p_s_sb, SB_BUFFER_WITH_SB(p_s_sb), 1) ; - journal_mark_dirty(&myth, p_s_sb, SB_BUFFER_WITH_SB(p_s_sb)) ; - do_journal_end(&myth, p_s_sb,1, FLUSH_ALL) ; - flushed = 1; - } - } - - /* this also catches errors during the do_journal_end above */ - if (!error && reiserfs_is_journal_aborted(journal)) { - memset(&myth, 0, sizeof(myth)); - if (!journal_join_abort(&myth, p_s_sb, 1)) { - reiserfs_prepare_for_journal(p_s_sb, SB_BUFFER_WITH_SB(p_s_sb), 1) ; - journal_mark_dirty(&myth, p_s_sb, SB_BUFFER_WITH_SB(p_s_sb)) ; - do_journal_end(&myth, p_s_sb, 1, FLUSH_ALL) ; - } - } - - reiserfs_mounted_fs_count-- ; - /* wait for all commits to finish */ - cancel_delayed_work(&SB_JOURNAL(p_s_sb)->j_work); - flush_workqueue(commit_wq); - if (!reiserfs_mounted_fs_count) { - destroy_workqueue(commit_wq); - commit_wq = NULL; - } - - free_journal_ram(p_s_sb) ; - - return 0 ; +static int do_journal_release(struct reiserfs_transaction_handle *th, + struct super_block *p_s_sb, int error) +{ + struct reiserfs_transaction_handle myth; + int flushed = 0; + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); + + /* we only want to flush out transactions if we were called with error == 0 + */ + if (!error && !(p_s_sb->s_flags & MS_RDONLY)) { + /* end the current trans */ + BUG_ON(!th->t_trans_id); + do_journal_end(th, p_s_sb, 10, FLUSH_ALL); + + /* make sure something gets logged to force our way into the flush code */ + if (!journal_join(&myth, p_s_sb, 1)) { + reiserfs_prepare_for_journal(p_s_sb, + SB_BUFFER_WITH_SB(p_s_sb), + 1); + journal_mark_dirty(&myth, p_s_sb, + SB_BUFFER_WITH_SB(p_s_sb)); + do_journal_end(&myth, p_s_sb, 1, FLUSH_ALL); + flushed = 1; + } + } + + /* this also catches errors during the do_journal_end above */ + if (!error && reiserfs_is_journal_aborted(journal)) { + memset(&myth, 0, sizeof(myth)); + if (!journal_join_abort(&myth, p_s_sb, 1)) { + reiserfs_prepare_for_journal(p_s_sb, + SB_BUFFER_WITH_SB(p_s_sb), + 1); + journal_mark_dirty(&myth, p_s_sb, + SB_BUFFER_WITH_SB(p_s_sb)); + do_journal_end(&myth, p_s_sb, 1, FLUSH_ALL); + } + } + + reiserfs_mounted_fs_count--; + /* wait for all commits to finish */ + cancel_delayed_work(&SB_JOURNAL(p_s_sb)->j_work); + flush_workqueue(commit_wq); + if (!reiserfs_mounted_fs_count) { + destroy_workqueue(commit_wq); + commit_wq = NULL; + } + + free_journal_ram(p_s_sb); + + return 0; } /* ** call on unmount. flush all journal trans, release all alloc'd ram */ -int journal_release(struct reiserfs_transaction_handle *th, struct super_block *p_s_sb) { - return do_journal_release(th, p_s_sb, 0) ; +int journal_release(struct reiserfs_transaction_handle *th, + struct super_block *p_s_sb) +{ + return do_journal_release(th, p_s_sb, 0); } + /* ** only call from an error condition inside reiserfs_read_super! */ -int journal_release_error(struct reiserfs_transaction_handle *th, struct super_block *p_s_sb) { - return do_journal_release(th, p_s_sb, 1) ; +int journal_release_error(struct reiserfs_transaction_handle *th, + struct super_block *p_s_sb) +{ + return do_journal_release(th, p_s_sb, 1); } /* compares description block with commit block. returns 1 if they differ, 0 if they are the same */ -static int journal_compare_desc_commit(struct super_block *p_s_sb, struct reiserfs_journal_desc *desc, - struct reiserfs_journal_commit *commit) { - if (get_commit_trans_id (commit) != get_desc_trans_id (desc) || - get_commit_trans_len (commit) != get_desc_trans_len (desc) || - get_commit_trans_len (commit) > SB_JOURNAL(p_s_sb)->j_trans_max || - get_commit_trans_len (commit) <= 0 - ) { - return 1 ; - } - return 0 ; +static int journal_compare_desc_commit(struct super_block *p_s_sb, + struct reiserfs_journal_desc *desc, + struct reiserfs_journal_commit *commit) +{ + if (get_commit_trans_id(commit) != get_desc_trans_id(desc) || + get_commit_trans_len(commit) != get_desc_trans_len(desc) || + get_commit_trans_len(commit) > SB_JOURNAL(p_s_sb)->j_trans_max || + get_commit_trans_len(commit) <= 0) { + return 1; + } + return 0; } + /* returns 0 if it did not find a description block ** returns -1 if it found a corrupt commit block ** returns 1 if both desc and commit were valid */ -static int journal_transaction_is_valid(struct super_block *p_s_sb, struct buffer_head *d_bh, unsigned long *oldest_invalid_trans_id, unsigned long *newest_mount_id) { - struct reiserfs_journal_desc *desc ; - struct reiserfs_journal_commit *commit ; - struct buffer_head *c_bh ; - unsigned long offset ; - - if (!d_bh) - return 0 ; - - desc = (struct reiserfs_journal_desc *)d_bh->b_data ; - if (get_desc_trans_len(desc) > 0 && !memcmp(get_journal_desc_magic (d_bh), JOURNAL_DESC_MAGIC, 8)) { - if (oldest_invalid_trans_id && *oldest_invalid_trans_id && get_desc_trans_id(desc) > *oldest_invalid_trans_id) { - reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, "journal-986: transaction " - "is valid returning because trans_id %d is greater than " - "oldest_invalid %lu", get_desc_trans_id(desc), - *oldest_invalid_trans_id); - return 0 ; - } - if (newest_mount_id && *newest_mount_id > get_desc_mount_id (desc)) { - reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, "journal-1087: transaction " - "is valid returning because mount_id %d is less than " - "newest_mount_id %lu", get_desc_mount_id (desc), - *newest_mount_id) ; - return -1 ; - } - if ( get_desc_trans_len(desc) > SB_JOURNAL(p_s_sb)->j_trans_max ) { - reiserfs_warning(p_s_sb, "journal-2018: Bad transaction length %d encountered, ignoring transaction", get_desc_trans_len(desc)); - return -1 ; - } - offset = d_bh->b_blocknr - SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) ; - - /* ok, we have a journal description block, lets see if the transaction was valid */ - c_bh = journal_bread(p_s_sb, SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + - ((offset + get_desc_trans_len(desc) + 1) % SB_ONDISK_JOURNAL_SIZE(p_s_sb))) ; - if (!c_bh) - return 0 ; - commit = (struct reiserfs_journal_commit *)c_bh->b_data ; - if (journal_compare_desc_commit(p_s_sb, desc, commit)) { - reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, - "journal_transaction_is_valid, commit offset %ld had bad " - "time %d or length %d", - c_bh->b_blocknr - SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb), - get_commit_trans_id (commit), - get_commit_trans_len(commit)); - brelse(c_bh) ; - if (oldest_invalid_trans_id) { - *oldest_invalid_trans_id = get_desc_trans_id(desc) ; - reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, "journal-1004: " - "transaction_is_valid setting oldest invalid trans_id " - "to %d", get_desc_trans_id(desc)) ; - } - return -1; - } - brelse(c_bh) ; - reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, "journal-1006: found valid " - "transaction start offset %llu, len %d id %d", - d_bh->b_blocknr - SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb), - get_desc_trans_len(desc), get_desc_trans_id(desc)) ; - return 1 ; - } else { - return 0 ; - } -} - -static void brelse_array(struct buffer_head **heads, int num) { - int i ; - for (i = 0 ; i < num ; i++) { - brelse(heads[i]) ; - } +static int journal_transaction_is_valid(struct super_block *p_s_sb, + struct buffer_head *d_bh, + unsigned long *oldest_invalid_trans_id, + unsigned long *newest_mount_id) +{ + struct reiserfs_journal_desc *desc; + struct reiserfs_journal_commit *commit; + struct buffer_head *c_bh; + unsigned long offset; + + if (!d_bh) + return 0; + + desc = (struct reiserfs_journal_desc *)d_bh->b_data; + if (get_desc_trans_len(desc) > 0 + && !memcmp(get_journal_desc_magic(d_bh), JOURNAL_DESC_MAGIC, 8)) { + if (oldest_invalid_trans_id && *oldest_invalid_trans_id + && get_desc_trans_id(desc) > *oldest_invalid_trans_id) { + reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, + "journal-986: transaction " + "is valid returning because trans_id %d is greater than " + "oldest_invalid %lu", + get_desc_trans_id(desc), + *oldest_invalid_trans_id); + return 0; + } + if (newest_mount_id + && *newest_mount_id > get_desc_mount_id(desc)) { + reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, + "journal-1087: transaction " + "is valid returning because mount_id %d is less than " + "newest_mount_id %lu", + get_desc_mount_id(desc), + *newest_mount_id); + return -1; + } + if (get_desc_trans_len(desc) > SB_JOURNAL(p_s_sb)->j_trans_max) { + reiserfs_warning(p_s_sb, + "journal-2018: Bad transaction length %d encountered, ignoring transaction", + get_desc_trans_len(desc)); + return -1; + } + offset = d_bh->b_blocknr - SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb); + + /* ok, we have a journal description block, lets see if the transaction was valid */ + c_bh = + journal_bread(p_s_sb, + SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + + ((offset + get_desc_trans_len(desc) + + 1) % SB_ONDISK_JOURNAL_SIZE(p_s_sb))); + if (!c_bh) + return 0; + commit = (struct reiserfs_journal_commit *)c_bh->b_data; + if (journal_compare_desc_commit(p_s_sb, desc, commit)) { + reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, + "journal_transaction_is_valid, commit offset %ld had bad " + "time %d or length %d", + c_bh->b_blocknr - + SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb), + get_commit_trans_id(commit), + get_commit_trans_len(commit)); + brelse(c_bh); + if (oldest_invalid_trans_id) { + *oldest_invalid_trans_id = + get_desc_trans_id(desc); + reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, + "journal-1004: " + "transaction_is_valid setting oldest invalid trans_id " + "to %d", + get_desc_trans_id(desc)); + } + return -1; + } + brelse(c_bh); + reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, + "journal-1006: found valid " + "transaction start offset %llu, len %d id %d", + d_bh->b_blocknr - + SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb), + get_desc_trans_len(desc), + get_desc_trans_id(desc)); + return 1; + } else { + return 0; + } +} + +static void brelse_array(struct buffer_head **heads, int num) +{ + int i; + for (i = 0; i < num; i++) { + brelse(heads[i]); + } } /* @@ -1863,149 +2018,202 @@ static void brelse_array(struct buffer_head **heads, int num) { ** this either reads in a replays a transaction, or returns because the transaction ** is invalid, or too old. */ -static int journal_read_transaction(struct super_block *p_s_sb, unsigned long cur_dblock, unsigned long oldest_start, - unsigned long oldest_trans_id, unsigned long newest_mount_id) { - struct reiserfs_journal *journal = SB_JOURNAL (p_s_sb); - struct reiserfs_journal_desc *desc ; - struct reiserfs_journal_commit *commit ; - unsigned long trans_id = 0 ; - struct buffer_head *c_bh ; - struct buffer_head *d_bh ; - struct buffer_head **log_blocks = NULL ; - struct buffer_head **real_blocks = NULL ; - unsigned long trans_offset ; - int i; - int trans_half; - - d_bh = journal_bread(p_s_sb, cur_dblock) ; - if (!d_bh) - return 1 ; - desc = (struct reiserfs_journal_desc *)d_bh->b_data ; - trans_offset = d_bh->b_blocknr - SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) ; - reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, "journal-1037: " - "journal_read_transaction, offset %llu, len %d mount_id %d", - d_bh->b_blocknr - SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb), - get_desc_trans_len(desc), get_desc_mount_id(desc)) ; - if (get_desc_trans_id(desc) < oldest_trans_id) { - reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, "journal-1039: " - "journal_read_trans skipping because %lu is too old", - cur_dblock - SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb)) ; - brelse(d_bh) ; - return 1 ; - } - if (get_desc_mount_id(desc) != newest_mount_id) { - reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, "journal-1146: " - "journal_read_trans skipping because %d is != " - "newest_mount_id %lu", get_desc_mount_id(desc), - newest_mount_id) ; - brelse(d_bh) ; - return 1 ; - } - c_bh = journal_bread(p_s_sb, SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + - ((trans_offset + get_desc_trans_len(desc) + 1) % - SB_ONDISK_JOURNAL_SIZE(p_s_sb))) ; - if (!c_bh) { - brelse(d_bh) ; - return 1 ; - } - commit = (struct reiserfs_journal_commit *)c_bh->b_data ; - if (journal_compare_desc_commit(p_s_sb, desc, commit)) { - reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, "journal_read_transaction, " - "commit offset %llu had bad time %d or length %d", - c_bh->b_blocknr - SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb), - get_commit_trans_id(commit), get_commit_trans_len(commit)); - brelse(c_bh) ; - brelse(d_bh) ; - return 1; - } - trans_id = get_desc_trans_id(desc) ; - /* now we know we've got a good transaction, and it was inside the valid time ranges */ - log_blocks = reiserfs_kmalloc(get_desc_trans_len(desc) * sizeof(struct buffer_head *), GFP_NOFS, p_s_sb) ; - real_blocks = reiserfs_kmalloc(get_desc_trans_len(desc) * sizeof(struct buffer_head *), GFP_NOFS, p_s_sb) ; - if (!log_blocks || !real_blocks) { - brelse(c_bh) ; - brelse(d_bh) ; - reiserfs_kfree(log_blocks, get_desc_trans_len(desc) * sizeof(struct buffer_head *), p_s_sb) ; - reiserfs_kfree(real_blocks, get_desc_trans_len(desc) * sizeof(struct buffer_head *), p_s_sb) ; - reiserfs_warning(p_s_sb, "journal-1169: kmalloc failed, unable to mount FS") ; - return -1 ; - } - /* get all the buffer heads */ - trans_half = journal_trans_half (p_s_sb->s_blocksize) ; - for(i = 0 ; i < get_desc_trans_len(desc) ; i++) { - log_blocks[i] = journal_getblk(p_s_sb, SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + (trans_offset + 1 + i) % SB_ONDISK_JOURNAL_SIZE(p_s_sb)); - if (i < trans_half) { - real_blocks[i] = sb_getblk(p_s_sb, le32_to_cpu(desc->j_realblock[i])) ; - } else { - real_blocks[i] = sb_getblk(p_s_sb, le32_to_cpu(commit->j_realblock[i - trans_half])) ; - } - if ( real_blocks[i]->b_blocknr > SB_BLOCK_COUNT(p_s_sb) ) { - reiserfs_warning(p_s_sb, "journal-1207: REPLAY FAILURE fsck required! Block to replay is outside of filesystem"); - goto abort_replay; - } - /* make sure we don't try to replay onto log or reserved area */ - if (is_block_in_log_or_reserved_area(p_s_sb, real_blocks[i]->b_blocknr)) { - reiserfs_warning(p_s_sb, "journal-1204: REPLAY FAILURE fsck required! Trying to replay onto a log block") ; -abort_replay: - brelse_array(log_blocks, i) ; - brelse_array(real_blocks, i) ; - brelse(c_bh) ; - brelse(d_bh) ; - reiserfs_kfree(log_blocks, get_desc_trans_len(desc) * sizeof(struct buffer_head *), p_s_sb) ; - reiserfs_kfree(real_blocks, get_desc_trans_len(desc) * sizeof(struct buffer_head *), p_s_sb) ; - return -1 ; - } - } - /* read in the log blocks, memcpy to the corresponding real block */ - ll_rw_block(READ, get_desc_trans_len(desc), log_blocks) ; - for (i = 0 ; i < get_desc_trans_len(desc) ; i++) { - wait_on_buffer(log_blocks[i]) ; - if (!buffer_uptodate(log_blocks[i])) { - reiserfs_warning(p_s_sb, "journal-1212: REPLAY FAILURE fsck required! buffer write failed") ; - brelse_array(log_blocks + i, get_desc_trans_len(desc) - i) ; - brelse_array(real_blocks, get_desc_trans_len(desc)) ; - brelse(c_bh) ; - brelse(d_bh) ; - reiserfs_kfree(log_blocks, get_desc_trans_len(desc) * sizeof(struct buffer_head *), p_s_sb) ; - reiserfs_kfree(real_blocks, get_desc_trans_len(desc) * sizeof(struct buffer_head *), p_s_sb) ; - return -1 ; - } - memcpy(real_blocks[i]->b_data, log_blocks[i]->b_data, real_blocks[i]->b_size) ; - set_buffer_uptodate(real_blocks[i]) ; - brelse(log_blocks[i]) ; - } - /* flush out the real blocks */ - for (i = 0 ; i < get_desc_trans_len(desc) ; i++) { - set_buffer_dirty(real_blocks[i]) ; - ll_rw_block(WRITE, 1, real_blocks + i) ; - } - for (i = 0 ; i < get_desc_trans_len(desc) ; i++) { - wait_on_buffer(real_blocks[i]) ; - if (!buffer_uptodate(real_blocks[i])) { - reiserfs_warning(p_s_sb, "journal-1226: REPLAY FAILURE, fsck required! buffer write failed") ; - brelse_array(real_blocks + i, get_desc_trans_len(desc) - i) ; - brelse(c_bh) ; - brelse(d_bh) ; - reiserfs_kfree(log_blocks, get_desc_trans_len(desc) * sizeof(struct buffer_head *), p_s_sb) ; - reiserfs_kfree(real_blocks, get_desc_trans_len(desc) * sizeof(struct buffer_head *), p_s_sb) ; - return -1 ; - } - brelse(real_blocks[i]) ; - } - cur_dblock = SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + ((trans_offset + get_desc_trans_len(desc) + 2) % SB_ONDISK_JOURNAL_SIZE(p_s_sb)) ; - reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, "journal-1095: setting journal " - "start to offset %ld", - cur_dblock - SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb)) ; - - /* init starting values for the first transaction, in case this is the last transaction to be replayed. */ - journal->j_start = cur_dblock - SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) ; - journal->j_last_flush_trans_id = trans_id ; - journal->j_trans_id = trans_id + 1; - brelse(c_bh) ; - brelse(d_bh) ; - reiserfs_kfree(log_blocks, le32_to_cpu(desc->j_len) * sizeof(struct buffer_head *), p_s_sb) ; - reiserfs_kfree(real_blocks, le32_to_cpu(desc->j_len) * sizeof(struct buffer_head *), p_s_sb) ; - return 0 ; +static int journal_read_transaction(struct super_block *p_s_sb, + unsigned long cur_dblock, + unsigned long oldest_start, + unsigned long oldest_trans_id, + unsigned long newest_mount_id) +{ + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); + struct reiserfs_journal_desc *desc; + struct reiserfs_journal_commit *commit; + unsigned long trans_id = 0; + struct buffer_head *c_bh; + struct buffer_head *d_bh; + struct buffer_head **log_blocks = NULL; + struct buffer_head **real_blocks = NULL; + unsigned long trans_offset; + int i; + int trans_half; + + d_bh = journal_bread(p_s_sb, cur_dblock); + if (!d_bh) + return 1; + desc = (struct reiserfs_journal_desc *)d_bh->b_data; + trans_offset = d_bh->b_blocknr - SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb); + reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, "journal-1037: " + "journal_read_transaction, offset %llu, len %d mount_id %d", + d_bh->b_blocknr - SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb), + get_desc_trans_len(desc), get_desc_mount_id(desc)); + if (get_desc_trans_id(desc) < oldest_trans_id) { + reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, "journal-1039: " + "journal_read_trans skipping because %lu is too old", + cur_dblock - + SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb)); + brelse(d_bh); + return 1; + } + if (get_desc_mount_id(desc) != newest_mount_id) { + reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, "journal-1146: " + "journal_read_trans skipping because %d is != " + "newest_mount_id %lu", get_desc_mount_id(desc), + newest_mount_id); + brelse(d_bh); + return 1; + } + c_bh = journal_bread(p_s_sb, SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + + ((trans_offset + get_desc_trans_len(desc) + 1) % + SB_ONDISK_JOURNAL_SIZE(p_s_sb))); + if (!c_bh) { + brelse(d_bh); + return 1; + } + commit = (struct reiserfs_journal_commit *)c_bh->b_data; + if (journal_compare_desc_commit(p_s_sb, desc, commit)) { + reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, + "journal_read_transaction, " + "commit offset %llu had bad time %d or length %d", + c_bh->b_blocknr - + SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb), + get_commit_trans_id(commit), + get_commit_trans_len(commit)); + brelse(c_bh); + brelse(d_bh); + return 1; + } + trans_id = get_desc_trans_id(desc); + /* now we know we've got a good transaction, and it was inside the valid time ranges */ + log_blocks = + reiserfs_kmalloc(get_desc_trans_len(desc) * + sizeof(struct buffer_head *), GFP_NOFS, p_s_sb); + real_blocks = + reiserfs_kmalloc(get_desc_trans_len(desc) * + sizeof(struct buffer_head *), GFP_NOFS, p_s_sb); + if (!log_blocks || !real_blocks) { + brelse(c_bh); + brelse(d_bh); + reiserfs_kfree(log_blocks, + get_desc_trans_len(desc) * + sizeof(struct buffer_head *), p_s_sb); + reiserfs_kfree(real_blocks, + get_desc_trans_len(desc) * + sizeof(struct buffer_head *), p_s_sb); + reiserfs_warning(p_s_sb, + "journal-1169: kmalloc failed, unable to mount FS"); + return -1; + } + /* get all the buffer heads */ + trans_half = journal_trans_half(p_s_sb->s_blocksize); + for (i = 0; i < get_desc_trans_len(desc); i++) { + log_blocks[i] = + journal_getblk(p_s_sb, + SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + + (trans_offset + 1 + + i) % SB_ONDISK_JOURNAL_SIZE(p_s_sb)); + if (i < trans_half) { + real_blocks[i] = + sb_getblk(p_s_sb, + le32_to_cpu(desc->j_realblock[i])); + } else { + real_blocks[i] = + sb_getblk(p_s_sb, + le32_to_cpu(commit-> + j_realblock[i - trans_half])); + } + if (real_blocks[i]->b_blocknr > SB_BLOCK_COUNT(p_s_sb)) { + reiserfs_warning(p_s_sb, + "journal-1207: REPLAY FAILURE fsck required! Block to replay is outside of filesystem"); + goto abort_replay; + } + /* make sure we don't try to replay onto log or reserved area */ + if (is_block_in_log_or_reserved_area + (p_s_sb, real_blocks[i]->b_blocknr)) { + reiserfs_warning(p_s_sb, + "journal-1204: REPLAY FAILURE fsck required! Trying to replay onto a log block"); + abort_replay: + brelse_array(log_blocks, i); + brelse_array(real_blocks, i); + brelse(c_bh); + brelse(d_bh); + reiserfs_kfree(log_blocks, + get_desc_trans_len(desc) * + sizeof(struct buffer_head *), p_s_sb); + reiserfs_kfree(real_blocks, + get_desc_trans_len(desc) * + sizeof(struct buffer_head *), p_s_sb); + return -1; + } + } + /* read in the log blocks, memcpy to the corresponding real block */ + ll_rw_block(READ, get_desc_trans_len(desc), log_blocks); + for (i = 0; i < get_desc_trans_len(desc); i++) { + wait_on_buffer(log_blocks[i]); + if (!buffer_uptodate(log_blocks[i])) { + reiserfs_warning(p_s_sb, + "journal-1212: REPLAY FAILURE fsck required! buffer write failed"); + brelse_array(log_blocks + i, + get_desc_trans_len(desc) - i); + brelse_array(real_blocks, get_desc_trans_len(desc)); + brelse(c_bh); + brelse(d_bh); + reiserfs_kfree(log_blocks, + get_desc_trans_len(desc) * + sizeof(struct buffer_head *), p_s_sb); + reiserfs_kfree(real_blocks, + get_desc_trans_len(desc) * + sizeof(struct buffer_head *), p_s_sb); + return -1; + } + memcpy(real_blocks[i]->b_data, log_blocks[i]->b_data, + real_blocks[i]->b_size); + set_buffer_uptodate(real_blocks[i]); + brelse(log_blocks[i]); + } + /* flush out the real blocks */ + for (i = 0; i < get_desc_trans_len(desc); i++) { + set_buffer_dirty(real_blocks[i]); + ll_rw_block(WRITE, 1, real_blocks + i); + } + for (i = 0; i < get_desc_trans_len(desc); i++) { + wait_on_buffer(real_blocks[i]); + if (!buffer_uptodate(real_blocks[i])) { + reiserfs_warning(p_s_sb, + "journal-1226: REPLAY FAILURE, fsck required! buffer write failed"); + brelse_array(real_blocks + i, + get_desc_trans_len(desc) - i); + brelse(c_bh); + brelse(d_bh); + reiserfs_kfree(log_blocks, + get_desc_trans_len(desc) * + sizeof(struct buffer_head *), p_s_sb); + reiserfs_kfree(real_blocks, + get_desc_trans_len(desc) * + sizeof(struct buffer_head *), p_s_sb); + return -1; + } + brelse(real_blocks[i]); + } + cur_dblock = + SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + + ((trans_offset + get_desc_trans_len(desc) + + 2) % SB_ONDISK_JOURNAL_SIZE(p_s_sb)); + reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, + "journal-1095: setting journal " "start to offset %ld", + cur_dblock - SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb)); + + /* init starting values for the first transaction, in case this is the last transaction to be replayed. */ + journal->j_start = cur_dblock - SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb); + journal->j_last_flush_trans_id = trans_id; + journal->j_trans_id = trans_id + 1; + brelse(c_bh); + brelse(d_bh); + reiserfs_kfree(log_blocks, + le32_to_cpu(desc->j_len) * sizeof(struct buffer_head *), + p_s_sb); + reiserfs_kfree(real_blocks, + le32_to_cpu(desc->j_len) * sizeof(struct buffer_head *), + p_s_sb); + return 0; } /* This function reads blocks starting from block and to max_block of bufsize @@ -2014,39 +2222,39 @@ abort_replay: Right now it is only used from journal code. But later we might use it from other places. Note: Do not use journal_getblk/sb_getblk functions here! */ -static struct buffer_head * reiserfs_breada (struct block_device *dev, int block, int bufsize, - unsigned int max_block) +static struct buffer_head *reiserfs_breada(struct block_device *dev, int block, + int bufsize, unsigned int max_block) { - struct buffer_head * bhlist[BUFNR]; + struct buffer_head *bhlist[BUFNR]; unsigned int blocks = BUFNR; - struct buffer_head * bh; + struct buffer_head *bh; int i, j; - - bh = __getblk (dev, block, bufsize ); - if (buffer_uptodate (bh)) - return (bh); - + + bh = __getblk(dev, block, bufsize); + if (buffer_uptodate(bh)) + return (bh); + if (block + BUFNR > max_block) { blocks = max_block - block; } bhlist[0] = bh; j = 1; for (i = 1; i < blocks; i++) { - bh = __getblk (dev, block + i, bufsize); - if (buffer_uptodate (bh)) { - brelse (bh); + bh = __getblk(dev, block + i, bufsize); + if (buffer_uptodate(bh)) { + brelse(bh); break; - } - else bhlist[j++] = bh; + } else + bhlist[j++] = bh; } - ll_rw_block (READ, j, bhlist); - for(i = 1; i < j; i++) - brelse (bhlist[i]); + ll_rw_block(READ, j, bhlist); + for (i = 1; i < j; i++) + brelse(bhlist[i]); bh = bhlist[0]; - wait_on_buffer (bh); - if (buffer_uptodate (bh)) + wait_on_buffer(bh); + if (buffer_uptodate(bh)) return bh; - brelse (bh); + brelse(bh); return NULL; } @@ -2059,218 +2267,250 @@ static struct buffer_head * reiserfs_breada (struct block_device *dev, int block ** ** On exit, it sets things up so the first transaction will work correctly. */ -static int journal_read(struct super_block *p_s_sb) { - struct reiserfs_journal *journal = SB_JOURNAL (p_s_sb); - struct reiserfs_journal_desc *desc ; - unsigned long oldest_trans_id = 0; - unsigned long oldest_invalid_trans_id = 0 ; - time_t start ; - unsigned long oldest_start = 0; - unsigned long cur_dblock = 0 ; - unsigned long newest_mount_id = 9 ; - struct buffer_head *d_bh ; - struct reiserfs_journal_header *jh ; - int valid_journal_header = 0 ; - int replay_count = 0 ; - int continue_replay = 1 ; - int ret ; - char b[BDEVNAME_SIZE]; - - cur_dblock = SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) ; - reiserfs_info (p_s_sb, "checking transaction log (%s)\n", - bdevname(journal->j_dev_bd, b)); - start = get_seconds(); - - /* step 1, read in the journal header block. Check the transaction it says - ** is the first unflushed, and if that transaction is not valid, - ** replay is done - */ - journal->j_header_bh = journal_bread(p_s_sb, - SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + - SB_ONDISK_JOURNAL_SIZE(p_s_sb)); - if (!journal->j_header_bh) { - return 1 ; - } - jh = (struct reiserfs_journal_header *)(journal->j_header_bh->b_data) ; - if (le32_to_cpu(jh->j_first_unflushed_offset) >= 0 && - le32_to_cpu(jh->j_first_unflushed_offset) < SB_ONDISK_JOURNAL_SIZE(p_s_sb) && - le32_to_cpu(jh->j_last_flush_trans_id) > 0) { - oldest_start = SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + - le32_to_cpu(jh->j_first_unflushed_offset) ; - oldest_trans_id = le32_to_cpu(jh->j_last_flush_trans_id) + 1; - newest_mount_id = le32_to_cpu(jh->j_mount_id); - reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, "journal-1153: found in " - "header: first_unflushed_offset %d, last_flushed_trans_id " - "%lu", le32_to_cpu(jh->j_first_unflushed_offset), - le32_to_cpu(jh->j_last_flush_trans_id)) ; - valid_journal_header = 1 ; - - /* now, we try to read the first unflushed offset. If it is not valid, - ** there is nothing more we can do, and it makes no sense to read - ** through the whole log. - */ - d_bh = journal_bread(p_s_sb, SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + le32_to_cpu(jh->j_first_unflushed_offset)) ; - ret = journal_transaction_is_valid(p_s_sb, d_bh, NULL, NULL) ; - if (!ret) { - continue_replay = 0 ; - } - brelse(d_bh) ; - goto start_log_replay; - } - - if (continue_replay && bdev_read_only(p_s_sb->s_bdev)) { - reiserfs_warning (p_s_sb, - "clm-2076: device is readonly, unable to replay log") ; - return -1 ; - } - - /* ok, there are transactions that need to be replayed. start with the first log block, find - ** all the valid transactions, and pick out the oldest. - */ - while(continue_replay && cur_dblock < (SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + SB_ONDISK_JOURNAL_SIZE(p_s_sb))) { - /* Note that it is required for blocksize of primary fs device and journal - device to be the same */ - d_bh = reiserfs_breada(journal->j_dev_bd, cur_dblock, p_s_sb->s_blocksize, - SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + SB_ONDISK_JOURNAL_SIZE(p_s_sb)) ; - ret = journal_transaction_is_valid(p_s_sb, d_bh, &oldest_invalid_trans_id, &newest_mount_id) ; - if (ret == 1) { - desc = (struct reiserfs_journal_desc *)d_bh->b_data ; - if (oldest_start == 0) { /* init all oldest_ values */ - oldest_trans_id = get_desc_trans_id(desc) ; - oldest_start = d_bh->b_blocknr ; - newest_mount_id = get_desc_mount_id(desc) ; - reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, "journal-1179: Setting " - "oldest_start to offset %llu, trans_id %lu", - oldest_start - SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb), - oldest_trans_id) ; - } else if (oldest_trans_id > get_desc_trans_id(desc)) { - /* one we just read was older */ - oldest_trans_id = get_desc_trans_id(desc) ; - oldest_start = d_bh->b_blocknr ; - reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, "journal-1180: Resetting " - "oldest_start to offset %lu, trans_id %lu", - oldest_start - SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb), - oldest_trans_id) ; - } - if (newest_mount_id < get_desc_mount_id(desc)) { - newest_mount_id = get_desc_mount_id(desc) ; +static int journal_read(struct super_block *p_s_sb) +{ + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); + struct reiserfs_journal_desc *desc; + unsigned long oldest_trans_id = 0; + unsigned long oldest_invalid_trans_id = 0; + time_t start; + unsigned long oldest_start = 0; + unsigned long cur_dblock = 0; + unsigned long newest_mount_id = 9; + struct buffer_head *d_bh; + struct reiserfs_journal_header *jh; + int valid_journal_header = 0; + int replay_count = 0; + int continue_replay = 1; + int ret; + char b[BDEVNAME_SIZE]; + + cur_dblock = SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb); + reiserfs_info(p_s_sb, "checking transaction log (%s)\n", + bdevname(journal->j_dev_bd, b)); + start = get_seconds(); + + /* step 1, read in the journal header block. Check the transaction it says + ** is the first unflushed, and if that transaction is not valid, + ** replay is done + */ + journal->j_header_bh = journal_bread(p_s_sb, + SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + + SB_ONDISK_JOURNAL_SIZE(p_s_sb)); + if (!journal->j_header_bh) { + return 1; + } + jh = (struct reiserfs_journal_header *)(journal->j_header_bh->b_data); + if (le32_to_cpu(jh->j_first_unflushed_offset) >= 0 && + le32_to_cpu(jh->j_first_unflushed_offset) < + SB_ONDISK_JOURNAL_SIZE(p_s_sb) + && le32_to_cpu(jh->j_last_flush_trans_id) > 0) { + oldest_start = + SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + + le32_to_cpu(jh->j_first_unflushed_offset); + oldest_trans_id = le32_to_cpu(jh->j_last_flush_trans_id) + 1; + newest_mount_id = le32_to_cpu(jh->j_mount_id); + reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, + "journal-1153: found in " + "header: first_unflushed_offset %d, last_flushed_trans_id " + "%lu", le32_to_cpu(jh->j_first_unflushed_offset), + le32_to_cpu(jh->j_last_flush_trans_id)); + valid_journal_header = 1; + + /* now, we try to read the first unflushed offset. If it is not valid, + ** there is nothing more we can do, and it makes no sense to read + ** through the whole log. + */ + d_bh = + journal_bread(p_s_sb, + SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + + le32_to_cpu(jh->j_first_unflushed_offset)); + ret = journal_transaction_is_valid(p_s_sb, d_bh, NULL, NULL); + if (!ret) { + continue_replay = 0; + } + brelse(d_bh); + goto start_log_replay; + } + + if (continue_replay && bdev_read_only(p_s_sb->s_bdev)) { + reiserfs_warning(p_s_sb, + "clm-2076: device is readonly, unable to replay log"); + return -1; + } + + /* ok, there are transactions that need to be replayed. start with the first log block, find + ** all the valid transactions, and pick out the oldest. + */ + while (continue_replay + && cur_dblock < + (SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + + SB_ONDISK_JOURNAL_SIZE(p_s_sb))) { + /* Note that it is required for blocksize of primary fs device and journal + device to be the same */ + d_bh = + reiserfs_breada(journal->j_dev_bd, cur_dblock, + p_s_sb->s_blocksize, + SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + + SB_ONDISK_JOURNAL_SIZE(p_s_sb)); + ret = + journal_transaction_is_valid(p_s_sb, d_bh, + &oldest_invalid_trans_id, + &newest_mount_id); + if (ret == 1) { + desc = (struct reiserfs_journal_desc *)d_bh->b_data; + if (oldest_start == 0) { /* init all oldest_ values */ + oldest_trans_id = get_desc_trans_id(desc); + oldest_start = d_bh->b_blocknr; + newest_mount_id = get_desc_mount_id(desc); + reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, + "journal-1179: Setting " + "oldest_start to offset %llu, trans_id %lu", + oldest_start - + SB_ONDISK_JOURNAL_1st_BLOCK + (p_s_sb), oldest_trans_id); + } else if (oldest_trans_id > get_desc_trans_id(desc)) { + /* one we just read was older */ + oldest_trans_id = get_desc_trans_id(desc); + oldest_start = d_bh->b_blocknr; + reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, + "journal-1180: Resetting " + "oldest_start to offset %lu, trans_id %lu", + oldest_start - + SB_ONDISK_JOURNAL_1st_BLOCK + (p_s_sb), oldest_trans_id); + } + if (newest_mount_id < get_desc_mount_id(desc)) { + newest_mount_id = get_desc_mount_id(desc); + reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, + "journal-1299: Setting " + "newest_mount_id to %d", + get_desc_mount_id(desc)); + } + cur_dblock += get_desc_trans_len(desc) + 2; + } else { + cur_dblock++; + } + brelse(d_bh); + } + + start_log_replay: + cur_dblock = oldest_start; + if (oldest_trans_id) { + reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, + "journal-1206: Starting replay " + "from offset %llu, trans_id %lu", + cur_dblock - SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb), + oldest_trans_id); + + } + replay_count = 0; + while (continue_replay && oldest_trans_id > 0) { + ret = + journal_read_transaction(p_s_sb, cur_dblock, oldest_start, + oldest_trans_id, newest_mount_id); + if (ret < 0) { + return ret; + } else if (ret != 0) { + break; + } + cur_dblock = + SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + journal->j_start; + replay_count++; + if (cur_dblock == oldest_start) + break; + } + + if (oldest_trans_id == 0) { + reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, + "journal-1225: No valid " "transactions found"); + } + /* j_start does not get set correctly if we don't replay any transactions. + ** if we had a valid journal_header, set j_start to the first unflushed transaction value, + ** copy the trans_id from the header + */ + if (valid_journal_header && replay_count == 0) { + journal->j_start = le32_to_cpu(jh->j_first_unflushed_offset); + journal->j_trans_id = + le32_to_cpu(jh->j_last_flush_trans_id) + 1; + journal->j_last_flush_trans_id = + le32_to_cpu(jh->j_last_flush_trans_id); + journal->j_mount_id = le32_to_cpu(jh->j_mount_id) + 1; + } else { + journal->j_mount_id = newest_mount_id + 1; + } reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, "journal-1299: Setting " - "newest_mount_id to %d", get_desc_mount_id(desc)); - } - cur_dblock += get_desc_trans_len(desc) + 2 ; - } else { - cur_dblock++ ; - } - brelse(d_bh) ; - } - -start_log_replay: - cur_dblock = oldest_start ; - if (oldest_trans_id) { - reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, "journal-1206: Starting replay " - "from offset %llu, trans_id %lu", - cur_dblock - SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb), - oldest_trans_id) ; - - } - replay_count = 0 ; - while(continue_replay && oldest_trans_id > 0) { - ret = journal_read_transaction(p_s_sb, cur_dblock, oldest_start, oldest_trans_id, newest_mount_id) ; - if (ret < 0) { - return ret ; - } else if (ret != 0) { - break ; - } - cur_dblock = SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + journal->j_start ; - replay_count++ ; - if (cur_dblock == oldest_start) - break; - } - - if (oldest_trans_id == 0) { - reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, "journal-1225: No valid " - "transactions found") ; - } - /* j_start does not get set correctly if we don't replay any transactions. - ** if we had a valid journal_header, set j_start to the first unflushed transaction value, - ** copy the trans_id from the header - */ - if (valid_journal_header && replay_count == 0) { - journal->j_start = le32_to_cpu(jh->j_first_unflushed_offset) ; - journal->j_trans_id = le32_to_cpu(jh->j_last_flush_trans_id) + 1; - journal->j_last_flush_trans_id = le32_to_cpu(jh->j_last_flush_trans_id) ; - journal->j_mount_id = le32_to_cpu(jh->j_mount_id) + 1; - } else { - journal->j_mount_id = newest_mount_id + 1 ; - } - reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE, "journal-1299: Setting " - "newest_mount_id to %lu", journal->j_mount_id) ; - journal->j_first_unflushed_offset = journal->j_start ; - if (replay_count > 0) { - reiserfs_info (p_s_sb, "replayed %d transactions in %lu seconds\n", - replay_count, get_seconds() - start) ; - } - if (!bdev_read_only(p_s_sb->s_bdev) && - _update_journal_header_block(p_s_sb, journal->j_start, - journal->j_last_flush_trans_id)) - { - /* replay failed, caller must call free_journal_ram and abort - ** the mount - */ - return -1 ; - } - return 0 ; + "newest_mount_id to %lu", journal->j_mount_id); + journal->j_first_unflushed_offset = journal->j_start; + if (replay_count > 0) { + reiserfs_info(p_s_sb, + "replayed %d transactions in %lu seconds\n", + replay_count, get_seconds() - start); + } + if (!bdev_read_only(p_s_sb->s_bdev) && + _update_journal_header_block(p_s_sb, journal->j_start, + journal->j_last_flush_trans_id)) { + /* replay failed, caller must call free_journal_ram and abort + ** the mount + */ + return -1; + } + return 0; } static struct reiserfs_journal_list *alloc_journal_list(struct super_block *s) { - struct reiserfs_journal_list *jl; -retry: - jl = reiserfs_kmalloc(sizeof(struct reiserfs_journal_list), GFP_NOFS, s); - if (!jl) { - yield(); - goto retry; - } - memset(jl, 0, sizeof(*jl)); - INIT_LIST_HEAD(&jl->j_list); - INIT_LIST_HEAD(&jl->j_working_list); - INIT_LIST_HEAD(&jl->j_tail_bh_list); - INIT_LIST_HEAD(&jl->j_bh_list); - sema_init(&jl->j_commit_lock, 1); - SB_JOURNAL(s)->j_num_lists++; - get_journal_list(jl); - return jl; -} - -static void journal_list_init(struct super_block *p_s_sb) { - SB_JOURNAL(p_s_sb)->j_current_jl = alloc_journal_list(p_s_sb); -} - -static int release_journal_dev( struct super_block *super, - struct reiserfs_journal *journal ) -{ - int result; - - result = 0; - - if( journal -> j_dev_file != NULL ) { - result = filp_close( journal -> j_dev_file, NULL ); - journal -> j_dev_file = NULL; - journal -> j_dev_bd = NULL; - } else if( journal -> j_dev_bd != NULL ) { - result = blkdev_put( journal -> j_dev_bd ); - journal -> j_dev_bd = NULL; - } - - if( result != 0 ) { - reiserfs_warning(super, "sh-457: release_journal_dev: Cannot release journal device: %i", result ); - } - return result; -} - -static int journal_init_dev( struct super_block *super, - struct reiserfs_journal *journal, - const char *jdev_name ) + struct reiserfs_journal_list *jl; + retry: + jl = reiserfs_kmalloc(sizeof(struct reiserfs_journal_list), GFP_NOFS, + s); + if (!jl) { + yield(); + goto retry; + } + memset(jl, 0, sizeof(*jl)); + INIT_LIST_HEAD(&jl->j_list); + INIT_LIST_HEAD(&jl->j_working_list); + INIT_LIST_HEAD(&jl->j_tail_bh_list); + INIT_LIST_HEAD(&jl->j_bh_list); + sema_init(&jl->j_commit_lock, 1); + SB_JOURNAL(s)->j_num_lists++; + get_journal_list(jl); + return jl; +} + +static void journal_list_init(struct super_block *p_s_sb) +{ + SB_JOURNAL(p_s_sb)->j_current_jl = alloc_journal_list(p_s_sb); +} + +static int release_journal_dev(struct super_block *super, + struct reiserfs_journal *journal) +{ + int result; + + result = 0; + + if (journal->j_dev_file != NULL) { + result = filp_close(journal->j_dev_file, NULL); + journal->j_dev_file = NULL; + journal->j_dev_bd = NULL; + } else if (journal->j_dev_bd != NULL) { + result = blkdev_put(journal->j_dev_bd); + journal->j_dev_bd = NULL; + } + + if (result != 0) { + reiserfs_warning(super, + "sh-457: release_journal_dev: Cannot release journal device: %i", + result); + } + return result; +} + +static int journal_init_dev(struct super_block *super, + struct reiserfs_journal *journal, + const char *jdev_name) { int result; dev_t jdev; @@ -2279,50 +2519,51 @@ static int journal_init_dev( struct super_block *super, result = 0; - journal -> j_dev_bd = NULL; - journal -> j_dev_file = NULL; - jdev = SB_ONDISK_JOURNAL_DEVICE( super ) ? - new_decode_dev(SB_ONDISK_JOURNAL_DEVICE(super)) : super->s_dev; + journal->j_dev_bd = NULL; + journal->j_dev_file = NULL; + jdev = SB_ONDISK_JOURNAL_DEVICE(super) ? + new_decode_dev(SB_ONDISK_JOURNAL_DEVICE(super)) : super->s_dev; if (bdev_read_only(super->s_bdev)) - blkdev_mode = FMODE_READ; + blkdev_mode = FMODE_READ; /* there is no "jdev" option and journal is on separate device */ - if( ( !jdev_name || !jdev_name[ 0 ] ) ) { + if ((!jdev_name || !jdev_name[0])) { journal->j_dev_bd = open_by_devnum(jdev, blkdev_mode); if (IS_ERR(journal->j_dev_bd)) { result = PTR_ERR(journal->j_dev_bd); journal->j_dev_bd = NULL; - reiserfs_warning (super, "sh-458: journal_init_dev: " - "cannot init journal device '%s': %i", - __bdevname(jdev, b), result ); + reiserfs_warning(super, "sh-458: journal_init_dev: " + "cannot init journal device '%s': %i", + __bdevname(jdev, b), result); return result; } else if (jdev != super->s_dev) set_blocksize(journal->j_dev_bd, super->s_blocksize); return 0; } - journal -> j_dev_file = filp_open( jdev_name, 0, 0 ); - if( !IS_ERR( journal -> j_dev_file ) ) { + journal->j_dev_file = filp_open(jdev_name, 0, 0); + if (!IS_ERR(journal->j_dev_file)) { struct inode *jdev_inode = journal->j_dev_file->f_mapping->host; - if( !S_ISBLK( jdev_inode -> i_mode ) ) { + if (!S_ISBLK(jdev_inode->i_mode)) { reiserfs_warning(super, "journal_init_dev: '%s' is " - "not a block device", jdev_name ); + "not a block device", jdev_name); result = -ENOTBLK; - release_journal_dev( super, journal ); - } else { + release_journal_dev(super, journal); + } else { /* ok */ journal->j_dev_bd = I_BDEV(jdev_inode); set_blocksize(journal->j_dev_bd, super->s_blocksize); - reiserfs_info(super, "journal_init_dev: journal device: %s\n", + reiserfs_info(super, + "journal_init_dev: journal device: %s\n", bdevname(journal->j_dev_bd, b)); } } else { - result = PTR_ERR( journal -> j_dev_file ); - journal -> j_dev_file = NULL; - reiserfs_warning (super, - "journal_init_dev: Cannot open '%s': %i", - jdev_name, result ); + result = PTR_ERR(journal->j_dev_file); + journal->j_dev_file = NULL; + reiserfs_warning(super, + "journal_init_dev: Cannot open '%s': %i", + jdev_name, result); } return result; } @@ -2330,193 +2571,214 @@ static int journal_init_dev( struct super_block *super, /* ** must be called once on fs mount. calls journal_read for you */ -int journal_init(struct super_block *p_s_sb, const char * j_dev_name, int old_format, unsigned int commit_max_age) { - int num_cnodes = SB_ONDISK_JOURNAL_SIZE(p_s_sb) * 2 ; - struct buffer_head *bhjh; - struct reiserfs_super_block * rs; - struct reiserfs_journal_header *jh; - struct reiserfs_journal *journal; - struct reiserfs_journal_list *jl; - char b[BDEVNAME_SIZE]; - - journal = SB_JOURNAL(p_s_sb) = vmalloc(sizeof (struct reiserfs_journal)) ; - if (!journal) { - reiserfs_warning (p_s_sb, "journal-1256: unable to get memory for journal structure") ; - return 1 ; - } - memset(journal, 0, sizeof(struct reiserfs_journal)) ; - INIT_LIST_HEAD(&journal->j_bitmap_nodes) ; - INIT_LIST_HEAD (&journal->j_prealloc_list); - INIT_LIST_HEAD(&journal->j_working_list); - INIT_LIST_HEAD(&journal->j_journal_list); - journal->j_persistent_trans = 0; - if (reiserfs_allocate_list_bitmaps(p_s_sb, - journal->j_list_bitmap, - SB_BMAP_NR(p_s_sb))) - goto free_and_return ; - allocate_bitmap_nodes(p_s_sb) ; - - /* reserved for journal area support */ - SB_JOURNAL_1st_RESERVED_BLOCK(p_s_sb) = (old_format ? - REISERFS_OLD_DISK_OFFSET_IN_BYTES / p_s_sb->s_blocksize + - SB_BMAP_NR(p_s_sb) + 1 : - REISERFS_DISK_OFFSET_IN_BYTES / p_s_sb->s_blocksize + 2); - - /* Sanity check to see is the standard journal fitting withing first bitmap - (actual for small blocksizes) */ - if ( !SB_ONDISK_JOURNAL_DEVICE( p_s_sb ) && - (SB_JOURNAL_1st_RESERVED_BLOCK(p_s_sb) + SB_ONDISK_JOURNAL_SIZE(p_s_sb) > p_s_sb->s_blocksize * 8) ) { - reiserfs_warning (p_s_sb, "journal-1393: journal does not fit for area " - "addressed by first of bitmap blocks. It starts at " - "%u and its size is %u. Block size %ld", - SB_JOURNAL_1st_RESERVED_BLOCK(p_s_sb), - SB_ONDISK_JOURNAL_SIZE(p_s_sb), p_s_sb->s_blocksize); - goto free_and_return; - } - - if( journal_init_dev( p_s_sb, journal, j_dev_name ) != 0 ) { - reiserfs_warning (p_s_sb, "sh-462: unable to initialize jornal device"); - goto free_and_return; - } - - rs = SB_DISK_SUPER_BLOCK(p_s_sb); - - /* read journal header */ - bhjh = journal_bread(p_s_sb, - SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + SB_ONDISK_JOURNAL_SIZE(p_s_sb)); - if (!bhjh) { - reiserfs_warning (p_s_sb, "sh-459: unable to read journal header"); - goto free_and_return; - } - jh = (struct reiserfs_journal_header *)(bhjh->b_data); - - /* make sure that journal matches to the super block */ - if (is_reiserfs_jr(rs) && (le32_to_cpu(jh->jh_journal.jp_journal_magic) != sb_jp_journal_magic(rs))) { - reiserfs_warning (p_s_sb, "sh-460: journal header magic %x " - "(device %s) does not match to magic found in super " - "block %x", - jh->jh_journal.jp_journal_magic, - bdevname( journal->j_dev_bd, b), - sb_jp_journal_magic(rs)); - brelse (bhjh); - goto free_and_return; - } - - journal->j_trans_max = le32_to_cpu (jh->jh_journal.jp_journal_trans_max); - journal->j_max_batch = le32_to_cpu (jh->jh_journal.jp_journal_max_batch); - journal->j_max_commit_age = le32_to_cpu (jh->jh_journal.jp_journal_max_commit_age); - journal->j_max_trans_age = JOURNAL_MAX_TRANS_AGE; - - if (journal->j_trans_max) { - /* make sure these parameters are available, assign it if they are not */ - __u32 initial = journal->j_trans_max; - __u32 ratio = 1; - - if (p_s_sb->s_blocksize < 4096) - ratio = 4096 / p_s_sb->s_blocksize; - - if (SB_ONDISK_JOURNAL_SIZE(p_s_sb)/journal->j_trans_max < JOURNAL_MIN_RATIO) - journal->j_trans_max = SB_ONDISK_JOURNAL_SIZE(p_s_sb) / JOURNAL_MIN_RATIO; - if (journal->j_trans_max > JOURNAL_TRANS_MAX_DEFAULT / ratio) - journal->j_trans_max = JOURNAL_TRANS_MAX_DEFAULT / ratio; - if (journal->j_trans_max < JOURNAL_TRANS_MIN_DEFAULT / ratio) - journal->j_trans_max = JOURNAL_TRANS_MIN_DEFAULT / ratio; - - if (journal->j_trans_max != initial) - reiserfs_warning (p_s_sb, "sh-461: journal_init: wrong transaction max size (%u). Changed to %u", - initial, journal->j_trans_max); - - journal->j_max_batch = journal->j_trans_max* - JOURNAL_MAX_BATCH_DEFAULT/JOURNAL_TRANS_MAX_DEFAULT; - } - - if (!journal->j_trans_max) { - /*we have the file system was created by old version of mkreiserfs - so this field contains zero value */ - journal->j_trans_max = JOURNAL_TRANS_MAX_DEFAULT ; - journal->j_max_batch = JOURNAL_MAX_BATCH_DEFAULT ; - journal->j_max_commit_age = JOURNAL_MAX_COMMIT_AGE ; - - /* for blocksize >= 4096 - max transaction size is 1024. For block size < 4096 - trans max size is decreased proportionally */ - if (p_s_sb->s_blocksize < 4096) { - journal->j_trans_max /= (4096 / p_s_sb->s_blocksize) ; - journal->j_max_batch = (journal->j_trans_max) * 9 / 10 ; - } - } - - journal->j_default_max_commit_age = journal->j_max_commit_age; - - if (commit_max_age != 0) { - journal->j_max_commit_age = commit_max_age; - journal->j_max_trans_age = commit_max_age; - } - - reiserfs_info (p_s_sb, "journal params: device %s, size %u, " - "journal first block %u, max trans len %u, max batch %u, " - "max commit age %u, max trans age %u\n", - bdevname( journal->j_dev_bd, b), - SB_ONDISK_JOURNAL_SIZE(p_s_sb), - SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb), - journal->j_trans_max, - journal->j_max_batch, - journal->j_max_commit_age, - journal->j_max_trans_age); - - brelse (bhjh); - - journal->j_list_bitmap_index = 0 ; - journal_list_init(p_s_sb) ; - - memset(journal->j_list_hash_table, 0, JOURNAL_HASH_SIZE * sizeof(struct reiserfs_journal_cnode *)) ; - - INIT_LIST_HEAD(&journal->j_dirty_buffers) ; - spin_lock_init(&journal->j_dirty_buffers_lock) ; - - journal->j_start = 0 ; - journal->j_len = 0 ; - journal->j_len_alloc = 0 ; - atomic_set(&(journal->j_wcount), 0) ; - atomic_set(&(journal->j_async_throttle), 0) ; - journal->j_bcount = 0 ; - journal->j_trans_start_time = 0 ; - journal->j_last = NULL ; - journal->j_first = NULL ; - init_waitqueue_head(&(journal->j_join_wait)) ; - sema_init(&journal->j_lock, 1); - sema_init(&journal->j_flush_sem, 1); - - journal->j_trans_id = 10 ; - journal->j_mount_id = 10 ; - journal->j_state = 0 ; - atomic_set(&(journal->j_jlock), 0) ; - journal->j_cnode_free_list = allocate_cnodes(num_cnodes) ; - journal->j_cnode_free_orig = journal->j_cnode_free_list ; - journal->j_cnode_free = journal->j_cnode_free_list ? num_cnodes : 0 ; - journal->j_cnode_used = 0 ; - journal->j_must_wait = 0 ; - - init_journal_hash(p_s_sb) ; - jl = journal->j_current_jl; - jl->j_list_bitmap = get_list_bitmap(p_s_sb, jl); - if (!jl->j_list_bitmap) { - reiserfs_warning(p_s_sb, "journal-2005, get_list_bitmap failed for journal list 0") ; - goto free_and_return; - } - if (journal_read(p_s_sb) < 0) { - reiserfs_warning(p_s_sb, "Replay Failure, unable to mount") ; - goto free_and_return; - } - - reiserfs_mounted_fs_count++ ; - if (reiserfs_mounted_fs_count <= 1) - commit_wq = create_workqueue("reiserfs"); - - INIT_WORK(&journal->j_work, flush_async_commits, p_s_sb); - return 0 ; -free_and_return: - free_journal_ram(p_s_sb); - return 1; +int journal_init(struct super_block *p_s_sb, const char *j_dev_name, + int old_format, unsigned int commit_max_age) +{ + int num_cnodes = SB_ONDISK_JOURNAL_SIZE(p_s_sb) * 2; + struct buffer_head *bhjh; + struct reiserfs_super_block *rs; + struct reiserfs_journal_header *jh; + struct reiserfs_journal *journal; + struct reiserfs_journal_list *jl; + char b[BDEVNAME_SIZE]; + + journal = SB_JOURNAL(p_s_sb) = vmalloc(sizeof(struct reiserfs_journal)); + if (!journal) { + reiserfs_warning(p_s_sb, + "journal-1256: unable to get memory for journal structure"); + return 1; + } + memset(journal, 0, sizeof(struct reiserfs_journal)); + INIT_LIST_HEAD(&journal->j_bitmap_nodes); + INIT_LIST_HEAD(&journal->j_prealloc_list); + INIT_LIST_HEAD(&journal->j_working_list); + INIT_LIST_HEAD(&journal->j_journal_list); + journal->j_persistent_trans = 0; + if (reiserfs_allocate_list_bitmaps(p_s_sb, + journal->j_list_bitmap, + SB_BMAP_NR(p_s_sb))) + goto free_and_return; + allocate_bitmap_nodes(p_s_sb); + + /* reserved for journal area support */ + SB_JOURNAL_1st_RESERVED_BLOCK(p_s_sb) = (old_format ? + REISERFS_OLD_DISK_OFFSET_IN_BYTES + / p_s_sb->s_blocksize + + SB_BMAP_NR(p_s_sb) + + 1 : + REISERFS_DISK_OFFSET_IN_BYTES / + p_s_sb->s_blocksize + 2); + + /* Sanity check to see is the standard journal fitting withing first bitmap + (actual for small blocksizes) */ + if (!SB_ONDISK_JOURNAL_DEVICE(p_s_sb) && + (SB_JOURNAL_1st_RESERVED_BLOCK(p_s_sb) + + SB_ONDISK_JOURNAL_SIZE(p_s_sb) > p_s_sb->s_blocksize * 8)) { + reiserfs_warning(p_s_sb, + "journal-1393: journal does not fit for area " + "addressed by first of bitmap blocks. It starts at " + "%u and its size is %u. Block size %ld", + SB_JOURNAL_1st_RESERVED_BLOCK(p_s_sb), + SB_ONDISK_JOURNAL_SIZE(p_s_sb), + p_s_sb->s_blocksize); + goto free_and_return; + } + + if (journal_init_dev(p_s_sb, journal, j_dev_name) != 0) { + reiserfs_warning(p_s_sb, + "sh-462: unable to initialize jornal device"); + goto free_and_return; + } + + rs = SB_DISK_SUPER_BLOCK(p_s_sb); + + /* read journal header */ + bhjh = journal_bread(p_s_sb, + SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + + SB_ONDISK_JOURNAL_SIZE(p_s_sb)); + if (!bhjh) { + reiserfs_warning(p_s_sb, + "sh-459: unable to read journal header"); + goto free_and_return; + } + jh = (struct reiserfs_journal_header *)(bhjh->b_data); + + /* make sure that journal matches to the super block */ + if (is_reiserfs_jr(rs) + && (le32_to_cpu(jh->jh_journal.jp_journal_magic) != + sb_jp_journal_magic(rs))) { + reiserfs_warning(p_s_sb, + "sh-460: journal header magic %x " + "(device %s) does not match to magic found in super " + "block %x", jh->jh_journal.jp_journal_magic, + bdevname(journal->j_dev_bd, b), + sb_jp_journal_magic(rs)); + brelse(bhjh); + goto free_and_return; + } + + journal->j_trans_max = le32_to_cpu(jh->jh_journal.jp_journal_trans_max); + journal->j_max_batch = le32_to_cpu(jh->jh_journal.jp_journal_max_batch); + journal->j_max_commit_age = + le32_to_cpu(jh->jh_journal.jp_journal_max_commit_age); + journal->j_max_trans_age = JOURNAL_MAX_TRANS_AGE; + + if (journal->j_trans_max) { + /* make sure these parameters are available, assign it if they are not */ + __u32 initial = journal->j_trans_max; + __u32 ratio = 1; + + if (p_s_sb->s_blocksize < 4096) + ratio = 4096 / p_s_sb->s_blocksize; + + if (SB_ONDISK_JOURNAL_SIZE(p_s_sb) / journal->j_trans_max < + JOURNAL_MIN_RATIO) + journal->j_trans_max = + SB_ONDISK_JOURNAL_SIZE(p_s_sb) / JOURNAL_MIN_RATIO; + if (journal->j_trans_max > JOURNAL_TRANS_MAX_DEFAULT / ratio) + journal->j_trans_max = + JOURNAL_TRANS_MAX_DEFAULT / ratio; + if (journal->j_trans_max < JOURNAL_TRANS_MIN_DEFAULT / ratio) + journal->j_trans_max = + JOURNAL_TRANS_MIN_DEFAULT / ratio; + + if (journal->j_trans_max != initial) + reiserfs_warning(p_s_sb, + "sh-461: journal_init: wrong transaction max size (%u). Changed to %u", + initial, journal->j_trans_max); + + journal->j_max_batch = journal->j_trans_max * + JOURNAL_MAX_BATCH_DEFAULT / JOURNAL_TRANS_MAX_DEFAULT; + } + + if (!journal->j_trans_max) { + /*we have the file system was created by old version of mkreiserfs + so this field contains zero value */ + journal->j_trans_max = JOURNAL_TRANS_MAX_DEFAULT; + journal->j_max_batch = JOURNAL_MAX_BATCH_DEFAULT; + journal->j_max_commit_age = JOURNAL_MAX_COMMIT_AGE; + + /* for blocksize >= 4096 - max transaction size is 1024. For block size < 4096 + trans max size is decreased proportionally */ + if (p_s_sb->s_blocksize < 4096) { + journal->j_trans_max /= (4096 / p_s_sb->s_blocksize); + journal->j_max_batch = (journal->j_trans_max) * 9 / 10; + } + } + + journal->j_default_max_commit_age = journal->j_max_commit_age; + + if (commit_max_age != 0) { + journal->j_max_commit_age = commit_max_age; + journal->j_max_trans_age = commit_max_age; + } + + reiserfs_info(p_s_sb, "journal params: device %s, size %u, " + "journal first block %u, max trans len %u, max batch %u, " + "max commit age %u, max trans age %u\n", + bdevname(journal->j_dev_bd, b), + SB_ONDISK_JOURNAL_SIZE(p_s_sb), + SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb), + journal->j_trans_max, + journal->j_max_batch, + journal->j_max_commit_age, journal->j_max_trans_age); + + brelse(bhjh); + + journal->j_list_bitmap_index = 0; + journal_list_init(p_s_sb); + + memset(journal->j_list_hash_table, 0, + JOURNAL_HASH_SIZE * sizeof(struct reiserfs_journal_cnode *)); + + INIT_LIST_HEAD(&journal->j_dirty_buffers); + spin_lock_init(&journal->j_dirty_buffers_lock); + + journal->j_start = 0; + journal->j_len = 0; + journal->j_len_alloc = 0; + atomic_set(&(journal->j_wcount), 0); + atomic_set(&(journal->j_async_throttle), 0); + journal->j_bcount = 0; + journal->j_trans_start_time = 0; + journal->j_last = NULL; + journal->j_first = NULL; + init_waitqueue_head(&(journal->j_join_wait)); + sema_init(&journal->j_lock, 1); + sema_init(&journal->j_flush_sem, 1); + + journal->j_trans_id = 10; + journal->j_mount_id = 10; + journal->j_state = 0; + atomic_set(&(journal->j_jlock), 0); + journal->j_cnode_free_list = allocate_cnodes(num_cnodes); + journal->j_cnode_free_orig = journal->j_cnode_free_list; + journal->j_cnode_free = journal->j_cnode_free_list ? num_cnodes : 0; + journal->j_cnode_used = 0; + journal->j_must_wait = 0; + + init_journal_hash(p_s_sb); + jl = journal->j_current_jl; + jl->j_list_bitmap = get_list_bitmap(p_s_sb, jl); + if (!jl->j_list_bitmap) { + reiserfs_warning(p_s_sb, + "journal-2005, get_list_bitmap failed for journal list 0"); + goto free_and_return; + } + if (journal_read(p_s_sb) < 0) { + reiserfs_warning(p_s_sb, "Replay Failure, unable to mount"); + goto free_and_return; + } + + reiserfs_mounted_fs_count++; + if (reiserfs_mounted_fs_count <= 1) + commit_wq = create_workqueue("reiserfs"); + + INIT_WORK(&journal->j_work, flush_async_commits, p_s_sb); + return 0; + free_and_return: + free_journal_ram(p_s_sb); + return 1; } /* @@ -2524,96 +2786,102 @@ free_and_return: ** be used by delete to make sure they don't write more than can fit inside a single ** transaction */ -int journal_transaction_should_end(struct reiserfs_transaction_handle *th, int new_alloc) { - struct reiserfs_journal *journal = SB_JOURNAL (th->t_super); - time_t now = get_seconds() ; - /* cannot restart while nested */ - BUG_ON (!th->t_trans_id); - if (th->t_refcount > 1) - return 0 ; - if ( journal->j_must_wait > 0 || - (journal->j_len_alloc + new_alloc) >= journal->j_max_batch || - atomic_read(&(journal->j_jlock)) || - (now - journal->j_trans_start_time) > journal->j_max_trans_age || - journal->j_cnode_free < (journal->j_trans_max * 3)) { - return 1 ; - } - return 0 ; +int journal_transaction_should_end(struct reiserfs_transaction_handle *th, + int new_alloc) +{ + struct reiserfs_journal *journal = SB_JOURNAL(th->t_super); + time_t now = get_seconds(); + /* cannot restart while nested */ + BUG_ON(!th->t_trans_id); + if (th->t_refcount > 1) + return 0; + if (journal->j_must_wait > 0 || + (journal->j_len_alloc + new_alloc) >= journal->j_max_batch || + atomic_read(&(journal->j_jlock)) || + (now - journal->j_trans_start_time) > journal->j_max_trans_age || + journal->j_cnode_free < (journal->j_trans_max * 3)) { + return 1; + } + return 0; } /* this must be called inside a transaction, and requires the ** kernel_lock to be held */ -void reiserfs_block_writes(struct reiserfs_transaction_handle *th) { - struct reiserfs_journal *journal = SB_JOURNAL (th->t_super); - BUG_ON (!th->t_trans_id); - journal->j_must_wait = 1 ; - set_bit(J_WRITERS_BLOCKED, &journal->j_state) ; - return ; +void reiserfs_block_writes(struct reiserfs_transaction_handle *th) +{ + struct reiserfs_journal *journal = SB_JOURNAL(th->t_super); + BUG_ON(!th->t_trans_id); + journal->j_must_wait = 1; + set_bit(J_WRITERS_BLOCKED, &journal->j_state); + return; } /* this must be called without a transaction started, and does not ** require BKL */ -void reiserfs_allow_writes(struct super_block *s) { - struct reiserfs_journal *journal = SB_JOURNAL (s); - clear_bit(J_WRITERS_BLOCKED, &journal->j_state) ; - wake_up(&journal->j_join_wait) ; +void reiserfs_allow_writes(struct super_block *s) +{ + struct reiserfs_journal *journal = SB_JOURNAL(s); + clear_bit(J_WRITERS_BLOCKED, &journal->j_state); + wake_up(&journal->j_join_wait); } /* this must be called without a transaction started, and does not ** require BKL */ -void reiserfs_wait_on_write_block(struct super_block *s) { - struct reiserfs_journal *journal = SB_JOURNAL (s); - wait_event(journal->j_join_wait, - !test_bit(J_WRITERS_BLOCKED, &journal->j_state)) ; -} - -static void queue_log_writer(struct super_block *s) { - wait_queue_t wait; - struct reiserfs_journal *journal = SB_JOURNAL (s); - set_bit(J_WRITERS_QUEUED, &journal->j_state); - - /* - * we don't want to use wait_event here because - * we only want to wait once. - */ - init_waitqueue_entry(&wait, current); - add_wait_queue(&journal->j_join_wait, &wait); - set_current_state(TASK_UNINTERRUPTIBLE); - if (test_bit(J_WRITERS_QUEUED, &journal->j_state)) - schedule(); - current->state = TASK_RUNNING; - remove_wait_queue(&journal->j_join_wait, &wait); -} - -static void wake_queued_writers(struct super_block *s) { - struct reiserfs_journal *journal = SB_JOURNAL (s); - if (test_and_clear_bit(J_WRITERS_QUEUED, &journal->j_state)) - wake_up(&journal->j_join_wait); -} - -static void let_transaction_grow(struct super_block *sb, - unsigned long trans_id) -{ - struct reiserfs_journal *journal = SB_JOURNAL (sb); - unsigned long bcount = journal->j_bcount; - while(1) { +void reiserfs_wait_on_write_block(struct super_block *s) +{ + struct reiserfs_journal *journal = SB_JOURNAL(s); + wait_event(journal->j_join_wait, + !test_bit(J_WRITERS_BLOCKED, &journal->j_state)); +} + +static void queue_log_writer(struct super_block *s) +{ + wait_queue_t wait; + struct reiserfs_journal *journal = SB_JOURNAL(s); + set_bit(J_WRITERS_QUEUED, &journal->j_state); + + /* + * we don't want to use wait_event here because + * we only want to wait once. + */ + init_waitqueue_entry(&wait, current); + add_wait_queue(&journal->j_join_wait, &wait); set_current_state(TASK_UNINTERRUPTIBLE); - schedule_timeout(1); - journal->j_current_jl->j_state |= LIST_COMMIT_PENDING; - while ((atomic_read(&journal->j_wcount) > 0 || - atomic_read(&journal->j_jlock)) && - journal->j_trans_id == trans_id) { - queue_log_writer(sb); + if (test_bit(J_WRITERS_QUEUED, &journal->j_state)) + schedule(); + current->state = TASK_RUNNING; + remove_wait_queue(&journal->j_join_wait, &wait); +} + +static void wake_queued_writers(struct super_block *s) +{ + struct reiserfs_journal *journal = SB_JOURNAL(s); + if (test_and_clear_bit(J_WRITERS_QUEUED, &journal->j_state)) + wake_up(&journal->j_join_wait); +} + +static void let_transaction_grow(struct super_block *sb, unsigned long trans_id) +{ + struct reiserfs_journal *journal = SB_JOURNAL(sb); + unsigned long bcount = journal->j_bcount; + while (1) { + set_current_state(TASK_UNINTERRUPTIBLE); + schedule_timeout(1); + journal->j_current_jl->j_state |= LIST_COMMIT_PENDING; + while ((atomic_read(&journal->j_wcount) > 0 || + atomic_read(&journal->j_jlock)) && + journal->j_trans_id == trans_id) { + queue_log_writer(sb); + } + if (journal->j_trans_id != trans_id) + break; + if (bcount == journal->j_bcount) + break; + bcount = journal->j_bcount; } - if (journal->j_trans_id != trans_id) - break; - if (bcount == journal->j_bcount) - break; - bcount = journal->j_bcount; - } } /* join == true if you must join an existing transaction. @@ -2622,221 +2890,244 @@ static void let_transaction_grow(struct super_block *sb, ** this will block until the transaction is joinable. send the number of blocks you ** expect to use in nblocks. */ -static int do_journal_begin_r(struct reiserfs_transaction_handle *th, struct super_block * p_s_sb,unsigned long nblocks,int join) { - time_t now = get_seconds() ; - int old_trans_id ; - struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); - struct reiserfs_transaction_handle myth; - int sched_count = 0; - int retval; - - reiserfs_check_lock_depth(p_s_sb, "journal_begin") ; - - PROC_INFO_INC( p_s_sb, journal.journal_being ); - /* set here for journal_join */ - th->t_refcount = 1; - th->t_super = p_s_sb ; - -relock: - lock_journal(p_s_sb) ; - if (join != JBEGIN_ABORT && reiserfs_is_journal_aborted (journal)) { - unlock_journal (p_s_sb); - retval = journal->j_errno; - goto out_fail; - } - journal->j_bcount++; - - if (test_bit(J_WRITERS_BLOCKED, &journal->j_state)) { - unlock_journal(p_s_sb) ; - reiserfs_wait_on_write_block(p_s_sb) ; - PROC_INFO_INC( p_s_sb, journal.journal_relock_writers ); - goto relock ; - } - now = get_seconds(); - - /* if there is no room in the journal OR - ** if this transaction is too old, and we weren't called joinable, wait for it to finish before beginning - ** we don't sleep if there aren't other writers - */ - - if ( (!join && journal->j_must_wait > 0) || - ( !join && (journal->j_len_alloc + nblocks + 2) >= journal->j_max_batch) || - (!join && atomic_read(&journal->j_wcount) > 0 && journal->j_trans_start_time > 0 && - (now - journal->j_trans_start_time) > journal->j_max_trans_age) || - (!join && atomic_read(&journal->j_jlock)) || - (!join && journal->j_cnode_free < (journal->j_trans_max * 3))) { - - old_trans_id = journal->j_trans_id; - unlock_journal(p_s_sb) ; /* allow others to finish this transaction */ - - if (!join && (journal->j_len_alloc + nblocks + 2) >= - journal->j_max_batch && - ((journal->j_len + nblocks + 2) * 100) < (journal->j_len_alloc * 75)) - { - if (atomic_read(&journal->j_wcount) > 10) { - sched_count++; - queue_log_writer(p_s_sb); - goto relock; - } - } - /* don't mess with joining the transaction if all we have to do is - * wait for someone else to do a commit - */ - if (atomic_read(&journal->j_jlock)) { - while (journal->j_trans_id == old_trans_id && - atomic_read(&journal->j_jlock)) { - queue_log_writer(p_s_sb); - } - goto relock; - } - retval = journal_join(&myth, p_s_sb, 1) ; - if (retval) - goto out_fail; - - /* someone might have ended the transaction while we joined */ - if (old_trans_id != journal->j_trans_id) { - retval = do_journal_end(&myth, p_s_sb, 1, 0) ; - } else { - retval = do_journal_end(&myth, p_s_sb, 1, COMMIT_NOW) ; - } - - if (retval) - goto out_fail; - - PROC_INFO_INC( p_s_sb, journal.journal_relock_wcount ); - goto relock ; - } - /* we are the first writer, set trans_id */ - if (journal->j_trans_start_time == 0) { - journal->j_trans_start_time = get_seconds(); - } - atomic_inc(&(journal->j_wcount)) ; - journal->j_len_alloc += nblocks ; - th->t_blocks_logged = 0 ; - th->t_blocks_allocated = nblocks ; - th->t_trans_id = journal->j_trans_id ; - unlock_journal(p_s_sb) ; - INIT_LIST_HEAD (&th->t_list); - return 0 ; - -out_fail: - memset (th, 0, sizeof (*th)); - /* Re-set th->t_super, so we can properly keep track of how many - * persistent transactions there are. We need to do this so if this - * call is part of a failed restart_transaction, we can free it later */ - th->t_super = p_s_sb; - return retval; -} - -struct reiserfs_transaction_handle * -reiserfs_persistent_transaction(struct super_block *s, int nblocks) { - int ret ; - struct reiserfs_transaction_handle *th ; - - /* if we're nesting into an existing transaction. It will be - ** persistent on its own - */ - if (reiserfs_transaction_running(s)) { - th = current->journal_info ; - th->t_refcount++ ; - if (th->t_refcount < 2) { - BUG() ; - } - return th ; - } - th = reiserfs_kmalloc(sizeof(struct reiserfs_transaction_handle), GFP_NOFS, s) ; - if (!th) - return NULL; - ret = journal_begin(th, s, nblocks) ; - if (ret) { - reiserfs_kfree(th, sizeof(struct reiserfs_transaction_handle), s) ; - return NULL; - } - - SB_JOURNAL(s)->j_persistent_trans++; - return th ; -} - -int -reiserfs_end_persistent_transaction(struct reiserfs_transaction_handle *th) { - struct super_block *s = th->t_super; - int ret = 0; - if (th->t_trans_id) - ret = journal_end(th, th->t_super, th->t_blocks_allocated); - else - ret = -EIO; - if (th->t_refcount == 0) { - SB_JOURNAL(s)->j_persistent_trans--; - reiserfs_kfree(th, sizeof(struct reiserfs_transaction_handle), s) ; - } - return ret; -} - -static int journal_join(struct reiserfs_transaction_handle *th, struct super_block *p_s_sb, unsigned long nblocks) { - struct reiserfs_transaction_handle *cur_th = current->journal_info; - - /* this keeps do_journal_end from NULLing out the current->journal_info - ** pointer - */ - th->t_handle_save = cur_th ; - if (cur_th && cur_th->t_refcount > 1) { - BUG() ; - } - return do_journal_begin_r(th, p_s_sb, nblocks, JBEGIN_JOIN) ; -} - -int journal_join_abort(struct reiserfs_transaction_handle *th, struct super_block *p_s_sb, unsigned long nblocks) { - struct reiserfs_transaction_handle *cur_th = current->journal_info; - - /* this keeps do_journal_end from NULLing out the current->journal_info - ** pointer - */ - th->t_handle_save = cur_th ; - if (cur_th && cur_th->t_refcount > 1) { - BUG() ; - } - return do_journal_begin_r(th, p_s_sb, nblocks, JBEGIN_ABORT) ; -} - -int journal_begin(struct reiserfs_transaction_handle *th, struct super_block * p_s_sb, unsigned long nblocks) { - struct reiserfs_transaction_handle *cur_th = current->journal_info ; - int ret ; - - th->t_handle_save = NULL ; - if (cur_th) { - /* we are nesting into the current transaction */ - if (cur_th->t_super == p_s_sb) { - BUG_ON (!cur_th->t_refcount); - cur_th->t_refcount++ ; - memcpy(th, cur_th, sizeof(*th)); - if (th->t_refcount <= 1) - reiserfs_warning (p_s_sb, "BAD: refcount <= 1, but journal_info != 0"); - return 0; +static int do_journal_begin_r(struct reiserfs_transaction_handle *th, + struct super_block *p_s_sb, unsigned long nblocks, + int join) +{ + time_t now = get_seconds(); + int old_trans_id; + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); + struct reiserfs_transaction_handle myth; + int sched_count = 0; + int retval; + + reiserfs_check_lock_depth(p_s_sb, "journal_begin"); + if (nblocks > journal->j_trans_max) + BUG(); + + PROC_INFO_INC(p_s_sb, journal.journal_being); + /* set here for journal_join */ + th->t_refcount = 1; + th->t_super = p_s_sb; + + relock: + lock_journal(p_s_sb); + if (join != JBEGIN_ABORT && reiserfs_is_journal_aborted(journal)) { + unlock_journal(p_s_sb); + retval = journal->j_errno; + goto out_fail; + } + journal->j_bcount++; + + if (test_bit(J_WRITERS_BLOCKED, &journal->j_state)) { + unlock_journal(p_s_sb); + reiserfs_wait_on_write_block(p_s_sb); + PROC_INFO_INC(p_s_sb, journal.journal_relock_writers); + goto relock; + } + now = get_seconds(); + + /* if there is no room in the journal OR + ** if this transaction is too old, and we weren't called joinable, wait for it to finish before beginning + ** we don't sleep if there aren't other writers + */ + + if ((!join && journal->j_must_wait > 0) || + (!join + && (journal->j_len_alloc + nblocks + 2) >= journal->j_max_batch) + || (!join && atomic_read(&journal->j_wcount) > 0 + && journal->j_trans_start_time > 0 + && (now - journal->j_trans_start_time) > + journal->j_max_trans_age) || (!join + && atomic_read(&journal->j_jlock)) + || (!join && journal->j_cnode_free < (journal->j_trans_max * 3))) { + + old_trans_id = journal->j_trans_id; + unlock_journal(p_s_sb); /* allow others to finish this transaction */ + + if (!join && (journal->j_len_alloc + nblocks + 2) >= + journal->j_max_batch && + ((journal->j_len + nblocks + 2) * 100) < + (journal->j_len_alloc * 75)) { + if (atomic_read(&journal->j_wcount) > 10) { + sched_count++; + queue_log_writer(p_s_sb); + goto relock; + } + } + /* don't mess with joining the transaction if all we have to do is + * wait for someone else to do a commit + */ + if (atomic_read(&journal->j_jlock)) { + while (journal->j_trans_id == old_trans_id && + atomic_read(&journal->j_jlock)) { + queue_log_writer(p_s_sb); + } + goto relock; + } + retval = journal_join(&myth, p_s_sb, 1); + if (retval) + goto out_fail; + + /* someone might have ended the transaction while we joined */ + if (old_trans_id != journal->j_trans_id) { + retval = do_journal_end(&myth, p_s_sb, 1, 0); + } else { + retval = do_journal_end(&myth, p_s_sb, 1, COMMIT_NOW); + } + + if (retval) + goto out_fail; + + PROC_INFO_INC(p_s_sb, journal.journal_relock_wcount); + goto relock; + } + /* we are the first writer, set trans_id */ + if (journal->j_trans_start_time == 0) { + journal->j_trans_start_time = get_seconds(); + } + atomic_inc(&(journal->j_wcount)); + journal->j_len_alloc += nblocks; + th->t_blocks_logged = 0; + th->t_blocks_allocated = nblocks; + th->t_trans_id = journal->j_trans_id; + unlock_journal(p_s_sb); + INIT_LIST_HEAD(&th->t_list); + get_fs_excl(); + return 0; + + out_fail: + memset(th, 0, sizeof(*th)); + /* Re-set th->t_super, so we can properly keep track of how many + * persistent transactions there are. We need to do this so if this + * call is part of a failed restart_transaction, we can free it later */ + th->t_super = p_s_sb; + return retval; +} + +struct reiserfs_transaction_handle *reiserfs_persistent_transaction(struct + super_block + *s, + int nblocks) +{ + int ret; + struct reiserfs_transaction_handle *th; + + /* if we're nesting into an existing transaction. It will be + ** persistent on its own + */ + if (reiserfs_transaction_running(s)) { + th = current->journal_info; + th->t_refcount++; + if (th->t_refcount < 2) { + BUG(); + } + return th; + } + th = reiserfs_kmalloc(sizeof(struct reiserfs_transaction_handle), + GFP_NOFS, s); + if (!th) + return NULL; + ret = journal_begin(th, s, nblocks); + if (ret) { + reiserfs_kfree(th, sizeof(struct reiserfs_transaction_handle), + s); + return NULL; + } + + SB_JOURNAL(s)->j_persistent_trans++; + return th; +} + +int reiserfs_end_persistent_transaction(struct reiserfs_transaction_handle *th) +{ + struct super_block *s = th->t_super; + int ret = 0; + if (th->t_trans_id) + ret = journal_end(th, th->t_super, th->t_blocks_allocated); + else + ret = -EIO; + if (th->t_refcount == 0) { + SB_JOURNAL(s)->j_persistent_trans--; + reiserfs_kfree(th, sizeof(struct reiserfs_transaction_handle), + s); + } + return ret; +} + +static int journal_join(struct reiserfs_transaction_handle *th, + struct super_block *p_s_sb, unsigned long nblocks) +{ + struct reiserfs_transaction_handle *cur_th = current->journal_info; + + /* this keeps do_journal_end from NULLing out the current->journal_info + ** pointer + */ + th->t_handle_save = cur_th; + if (cur_th && cur_th->t_refcount > 1) { + BUG(); + } + return do_journal_begin_r(th, p_s_sb, nblocks, JBEGIN_JOIN); +} + +int journal_join_abort(struct reiserfs_transaction_handle *th, + struct super_block *p_s_sb, unsigned long nblocks) +{ + struct reiserfs_transaction_handle *cur_th = current->journal_info; + + /* this keeps do_journal_end from NULLing out the current->journal_info + ** pointer + */ + th->t_handle_save = cur_th; + if (cur_th && cur_th->t_refcount > 1) { + BUG(); + } + return do_journal_begin_r(th, p_s_sb, nblocks, JBEGIN_ABORT); +} + +int journal_begin(struct reiserfs_transaction_handle *th, + struct super_block *p_s_sb, unsigned long nblocks) +{ + struct reiserfs_transaction_handle *cur_th = current->journal_info; + int ret; + + th->t_handle_save = NULL; + if (cur_th) { + /* we are nesting into the current transaction */ + if (cur_th->t_super == p_s_sb) { + BUG_ON(!cur_th->t_refcount); + cur_th->t_refcount++; + memcpy(th, cur_th, sizeof(*th)); + if (th->t_refcount <= 1) + reiserfs_warning(p_s_sb, + "BAD: refcount <= 1, but journal_info != 0"); + return 0; + } else { + /* we've ended up with a handle from a different filesystem. + ** save it and restore on journal_end. This should never + ** really happen... + */ + reiserfs_warning(p_s_sb, + "clm-2100: nesting info a different FS"); + th->t_handle_save = current->journal_info; + current->journal_info = th; + } } else { - /* we've ended up with a handle from a different filesystem. - ** save it and restore on journal_end. This should never - ** really happen... - */ - reiserfs_warning(p_s_sb, "clm-2100: nesting info a different FS") ; - th->t_handle_save = current->journal_info ; - current->journal_info = th; - } - } else { - current->journal_info = th; - } - ret = do_journal_begin_r(th, p_s_sb, nblocks, JBEGIN_REG) ; - if (current->journal_info != th) - BUG() ; + current->journal_info = th; + } + ret = do_journal_begin_r(th, p_s_sb, nblocks, JBEGIN_REG); + if (current->journal_info != th) + BUG(); - /* I guess this boils down to being the reciprocal of clm-2100 above. - * If do_journal_begin_r fails, we need to put it back, since journal_end - * won't be called to do it. */ - if (ret) - current->journal_info = th->t_handle_save; - else - BUG_ON (!th->t_refcount); + /* I guess this boils down to being the reciprocal of clm-2100 above. + * If do_journal_begin_r fails, we need to put it back, since journal_end + * won't be called to do it. */ + if (ret) + current->journal_info = th->t_handle_save; + else + BUG_ON(!th->t_refcount); - return ret ; + return ret; } /* @@ -2848,129 +3139,140 @@ int journal_begin(struct reiserfs_transaction_handle *th, struct super_block * ** ** if j_len, is bigger than j_len_alloc, it pushes j_len_alloc to 10 + j_len. */ -int journal_mark_dirty(struct reiserfs_transaction_handle *th, struct super_block *p_s_sb, struct buffer_head *bh) { - struct reiserfs_journal *journal = SB_JOURNAL (p_s_sb); - struct reiserfs_journal_cnode *cn = NULL; - int count_already_incd = 0 ; - int prepared = 0 ; - BUG_ON (!th->t_trans_id); - - PROC_INFO_INC( p_s_sb, journal.mark_dirty ); - if (th->t_trans_id != journal->j_trans_id) { - reiserfs_panic(th->t_super, "journal-1577: handle trans id %ld != current trans id %ld\n", - th->t_trans_id, journal->j_trans_id); - } - - p_s_sb->s_dirt = 1; - - prepared = test_clear_buffer_journal_prepared (bh); - clear_buffer_journal_restore_dirty (bh); - /* already in this transaction, we are done */ - if (buffer_journaled(bh)) { - PROC_INFO_INC( p_s_sb, journal.mark_dirty_already ); - return 0 ; - } - - /* this must be turned into a panic instead of a warning. We can't allow - ** a dirty or journal_dirty or locked buffer to be logged, as some changes - ** could get to disk too early. NOT GOOD. - */ - if (!prepared || buffer_dirty(bh)) { - reiserfs_warning (p_s_sb, "journal-1777: buffer %llu bad state " - "%cPREPARED %cLOCKED %cDIRTY %cJDIRTY_WAIT", - (unsigned long long)bh->b_blocknr, prepared ? ' ' : '!', - buffer_locked(bh) ? ' ' : '!', - buffer_dirty(bh) ? ' ' : '!', - buffer_journal_dirty(bh) ? ' ' : '!') ; - } - - if (atomic_read(&(journal->j_wcount)) <= 0) { - reiserfs_warning (p_s_sb, "journal-1409: journal_mark_dirty returning because j_wcount was %d", atomic_read(&(journal->j_wcount))) ; - return 1 ; - } - /* this error means I've screwed up, and we've overflowed the transaction. - ** Nothing can be done here, except make the FS readonly or panic. - */ - if (journal->j_len >= journal->j_trans_max) { - reiserfs_panic(th->t_super, "journal-1413: journal_mark_dirty: j_len (%lu) is too big\n", journal->j_len) ; - } - - if (buffer_journal_dirty(bh)) { - count_already_incd = 1 ; - PROC_INFO_INC( p_s_sb, journal.mark_dirty_notjournal ); - clear_buffer_journal_dirty (bh); - } - - if (journal->j_len > journal->j_len_alloc) { - journal->j_len_alloc = journal->j_len + JOURNAL_PER_BALANCE_CNT ; - } - - set_buffer_journaled (bh); - - /* now put this guy on the end */ - if (!cn) { - cn = get_cnode(p_s_sb) ; - if (!cn) { - reiserfs_panic(p_s_sb, "get_cnode failed!\n"); - } - - if (th->t_blocks_logged == th->t_blocks_allocated) { - th->t_blocks_allocated += JOURNAL_PER_BALANCE_CNT ; - journal->j_len_alloc += JOURNAL_PER_BALANCE_CNT ; - } - th->t_blocks_logged++ ; - journal->j_len++ ; - - cn->bh = bh ; - cn->blocknr = bh->b_blocknr ; - cn->sb = p_s_sb; - cn->jlist = NULL ; - insert_journal_hash(journal->j_hash_table, cn) ; - if (!count_already_incd) { - get_bh(bh) ; - } - } - cn->next = NULL ; - cn->prev = journal->j_last ; - cn->bh = bh ; - if (journal->j_last) { - journal->j_last->next = cn ; - journal->j_last = cn ; - } else { - journal->j_first = cn ; - journal->j_last = cn ; - } - return 0 ; -} - -int journal_end(struct reiserfs_transaction_handle *th, struct super_block *p_s_sb, unsigned long nblocks) { - if (!current->journal_info && th->t_refcount > 1) - reiserfs_warning (p_s_sb, "REISER-NESTING: th NULL, refcount %d", - th->t_refcount); - - if (!th->t_trans_id) { - WARN_ON (1); - return -EIO; - } - - th->t_refcount--; - if (th->t_refcount > 0) { - struct reiserfs_transaction_handle *cur_th = current->journal_info ; - - /* we aren't allowed to close a nested transaction on a different - ** filesystem from the one in the task struct - */ - if (cur_th->t_super != th->t_super) - BUG() ; - - if (th != cur_th) { - memcpy(current->journal_info, th, sizeof(*th)); - th->t_trans_id = 0; - } - return 0; - } else { - return do_journal_end(th, p_s_sb, nblocks, 0) ; - } +int journal_mark_dirty(struct reiserfs_transaction_handle *th, + struct super_block *p_s_sb, struct buffer_head *bh) +{ + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); + struct reiserfs_journal_cnode *cn = NULL; + int count_already_incd = 0; + int prepared = 0; + BUG_ON(!th->t_trans_id); + + PROC_INFO_INC(p_s_sb, journal.mark_dirty); + if (th->t_trans_id != journal->j_trans_id) { + reiserfs_panic(th->t_super, + "journal-1577: handle trans id %ld != current trans id %ld\n", + th->t_trans_id, journal->j_trans_id); + } + + p_s_sb->s_dirt = 1; + + prepared = test_clear_buffer_journal_prepared(bh); + clear_buffer_journal_restore_dirty(bh); + /* already in this transaction, we are done */ + if (buffer_journaled(bh)) { + PROC_INFO_INC(p_s_sb, journal.mark_dirty_already); + return 0; + } + + /* this must be turned into a panic instead of a warning. We can't allow + ** a dirty or journal_dirty or locked buffer to be logged, as some changes + ** could get to disk too early. NOT GOOD. + */ + if (!prepared || buffer_dirty(bh)) { + reiserfs_warning(p_s_sb, "journal-1777: buffer %llu bad state " + "%cPREPARED %cLOCKED %cDIRTY %cJDIRTY_WAIT", + (unsigned long long)bh->b_blocknr, + prepared ? ' ' : '!', + buffer_locked(bh) ? ' ' : '!', + buffer_dirty(bh) ? ' ' : '!', + buffer_journal_dirty(bh) ? ' ' : '!'); + } + + if (atomic_read(&(journal->j_wcount)) <= 0) { + reiserfs_warning(p_s_sb, + "journal-1409: journal_mark_dirty returning because j_wcount was %d", + atomic_read(&(journal->j_wcount))); + return 1; + } + /* this error means I've screwed up, and we've overflowed the transaction. + ** Nothing can be done here, except make the FS readonly or panic. + */ + if (journal->j_len >= journal->j_trans_max) { + reiserfs_panic(th->t_super, + "journal-1413: journal_mark_dirty: j_len (%lu) is too big\n", + journal->j_len); + } + + if (buffer_journal_dirty(bh)) { + count_already_incd = 1; + PROC_INFO_INC(p_s_sb, journal.mark_dirty_notjournal); + clear_buffer_journal_dirty(bh); + } + + if (journal->j_len > journal->j_len_alloc) { + journal->j_len_alloc = journal->j_len + JOURNAL_PER_BALANCE_CNT; + } + + set_buffer_journaled(bh); + + /* now put this guy on the end */ + if (!cn) { + cn = get_cnode(p_s_sb); + if (!cn) { + reiserfs_panic(p_s_sb, "get_cnode failed!\n"); + } + + if (th->t_blocks_logged == th->t_blocks_allocated) { + th->t_blocks_allocated += JOURNAL_PER_BALANCE_CNT; + journal->j_len_alloc += JOURNAL_PER_BALANCE_CNT; + } + th->t_blocks_logged++; + journal->j_len++; + + cn->bh = bh; + cn->blocknr = bh->b_blocknr; + cn->sb = p_s_sb; + cn->jlist = NULL; + insert_journal_hash(journal->j_hash_table, cn); + if (!count_already_incd) { + get_bh(bh); + } + } + cn->next = NULL; + cn->prev = journal->j_last; + cn->bh = bh; + if (journal->j_last) { + journal->j_last->next = cn; + journal->j_last = cn; + } else { + journal->j_first = cn; + journal->j_last = cn; + } + return 0; +} + +int journal_end(struct reiserfs_transaction_handle *th, + struct super_block *p_s_sb, unsigned long nblocks) +{ + if (!current->journal_info && th->t_refcount > 1) + reiserfs_warning(p_s_sb, "REISER-NESTING: th NULL, refcount %d", + th->t_refcount); + + if (!th->t_trans_id) { + WARN_ON(1); + return -EIO; + } + + th->t_refcount--; + if (th->t_refcount > 0) { + struct reiserfs_transaction_handle *cur_th = + current->journal_info; + + /* we aren't allowed to close a nested transaction on a different + ** filesystem from the one in the task struct + */ + if (cur_th->t_super != th->t_super) + BUG(); + + if (th != cur_th) { + memcpy(current->journal_info, th, sizeof(*th)); + th->t_trans_id = 0; + } + return 0; + } else { + return do_journal_end(th, p_s_sb, nblocks, 0); + } } /* removes from the current transaction, relsing and descrementing any counters. @@ -2980,47 +3282,51 @@ int journal_end(struct reiserfs_transaction_handle *th, struct super_block *p_s_ ** ** returns 1 if it cleaned and relsed the buffer. 0 otherwise */ -static int remove_from_transaction(struct super_block *p_s_sb, b_blocknr_t blocknr, int already_cleaned) { - struct buffer_head *bh ; - struct reiserfs_journal_cnode *cn ; - struct reiserfs_journal *journal = SB_JOURNAL (p_s_sb); - int ret = 0; - - cn = get_journal_hash_dev(p_s_sb, journal->j_hash_table, blocknr) ; - if (!cn || !cn->bh) { - return ret ; - } - bh = cn->bh ; - if (cn->prev) { - cn->prev->next = cn->next ; - } - if (cn->next) { - cn->next->prev = cn->prev ; - } - if (cn == journal->j_first) { - journal->j_first = cn->next ; - } - if (cn == journal->j_last) { - journal->j_last = cn->prev ; - } - if (bh) - remove_journal_hash(p_s_sb, journal->j_hash_table, NULL, bh->b_blocknr, 0) ; - clear_buffer_journaled (bh); /* don't log this one */ - - if (!already_cleaned) { - clear_buffer_journal_dirty (bh); - clear_buffer_dirty(bh); - clear_buffer_journal_test (bh); - put_bh(bh) ; - if (atomic_read(&(bh->b_count)) < 0) { - reiserfs_warning (p_s_sb, "journal-1752: remove from trans, b_count < 0"); - } - ret = 1 ; - } - journal->j_len-- ; - journal->j_len_alloc-- ; - free_cnode(p_s_sb, cn) ; - return ret ; +static int remove_from_transaction(struct super_block *p_s_sb, + b_blocknr_t blocknr, int already_cleaned) +{ + struct buffer_head *bh; + struct reiserfs_journal_cnode *cn; + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); + int ret = 0; + + cn = get_journal_hash_dev(p_s_sb, journal->j_hash_table, blocknr); + if (!cn || !cn->bh) { + return ret; + } + bh = cn->bh; + if (cn->prev) { + cn->prev->next = cn->next; + } + if (cn->next) { + cn->next->prev = cn->prev; + } + if (cn == journal->j_first) { + journal->j_first = cn->next; + } + if (cn == journal->j_last) { + journal->j_last = cn->prev; + } + if (bh) + remove_journal_hash(p_s_sb, journal->j_hash_table, NULL, + bh->b_blocknr, 0); + clear_buffer_journaled(bh); /* don't log this one */ + + if (!already_cleaned) { + clear_buffer_journal_dirty(bh); + clear_buffer_dirty(bh); + clear_buffer_journal_test(bh); + put_bh(bh); + if (atomic_read(&(bh->b_count)) < 0) { + reiserfs_warning(p_s_sb, + "journal-1752: remove from trans, b_count < 0"); + } + ret = 1; + } + journal->j_len--; + journal->j_len_alloc--; + free_cnode(p_s_sb, cn); + return ret; } /* @@ -3033,120 +3339,129 @@ static int remove_from_transaction(struct super_block *p_s_sb, b_blocknr_t block ** blocks for a given transaction on disk ** */ -static int can_dirty(struct reiserfs_journal_cnode *cn) { - struct super_block *sb = cn->sb; - b_blocknr_t blocknr = cn->blocknr ; - struct reiserfs_journal_cnode *cur = cn->hprev ; - int can_dirty = 1 ; - - /* first test hprev. These are all newer than cn, so any node here - ** with the same block number and dev means this node can't be sent - ** to disk right now. - */ - while(cur && can_dirty) { - if (cur->jlist && cur->bh && cur->blocknr && cur->sb == sb && - cur->blocknr == blocknr) { - can_dirty = 0 ; - } - cur = cur->hprev ; - } - /* then test hnext. These are all older than cn. As long as they - ** are committed to the log, it is safe to write cn to disk - */ - cur = cn->hnext ; - while(cur && can_dirty) { - if (cur->jlist && cur->jlist->j_len > 0 && - atomic_read(&(cur->jlist->j_commit_left)) > 0 && cur->bh && - cur->blocknr && cur->sb == sb && cur->blocknr == blocknr) { - can_dirty = 0 ; - } - cur = cur->hnext ; - } - return can_dirty ; +static int can_dirty(struct reiserfs_journal_cnode *cn) +{ + struct super_block *sb = cn->sb; + b_blocknr_t blocknr = cn->blocknr; + struct reiserfs_journal_cnode *cur = cn->hprev; + int can_dirty = 1; + + /* first test hprev. These are all newer than cn, so any node here + ** with the same block number and dev means this node can't be sent + ** to disk right now. + */ + while (cur && can_dirty) { + if (cur->jlist && cur->bh && cur->blocknr && cur->sb == sb && + cur->blocknr == blocknr) { + can_dirty = 0; + } + cur = cur->hprev; + } + /* then test hnext. These are all older than cn. As long as they + ** are committed to the log, it is safe to write cn to disk + */ + cur = cn->hnext; + while (cur && can_dirty) { + if (cur->jlist && cur->jlist->j_len > 0 && + atomic_read(&(cur->jlist->j_commit_left)) > 0 && cur->bh && + cur->blocknr && cur->sb == sb && cur->blocknr == blocknr) { + can_dirty = 0; + } + cur = cur->hnext; + } + return can_dirty; } /* syncs the commit blocks, but does not force the real buffers to disk ** will wait until the current transaction is done/commited before returning */ -int journal_end_sync(struct reiserfs_transaction_handle *th, struct super_block *p_s_sb, unsigned long nblocks) { - struct reiserfs_journal *journal = SB_JOURNAL (p_s_sb); +int journal_end_sync(struct reiserfs_transaction_handle *th, + struct super_block *p_s_sb, unsigned long nblocks) +{ + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); - BUG_ON (!th->t_trans_id); - /* you can sync while nested, very, very bad */ - if (th->t_refcount > 1) { - BUG() ; - } - if (journal->j_len == 0) { - reiserfs_prepare_for_journal(p_s_sb, SB_BUFFER_WITH_SB(p_s_sb), 1) ; - journal_mark_dirty(th, p_s_sb, SB_BUFFER_WITH_SB(p_s_sb)) ; - } - return do_journal_end(th, p_s_sb, nblocks, COMMIT_NOW | WAIT) ; + BUG_ON(!th->t_trans_id); + /* you can sync while nested, very, very bad */ + if (th->t_refcount > 1) { + BUG(); + } + if (journal->j_len == 0) { + reiserfs_prepare_for_journal(p_s_sb, SB_BUFFER_WITH_SB(p_s_sb), + 1); + journal_mark_dirty(th, p_s_sb, SB_BUFFER_WITH_SB(p_s_sb)); + } + return do_journal_end(th, p_s_sb, nblocks, COMMIT_NOW | WAIT); } /* ** writeback the pending async commits to disk */ -static void flush_async_commits(void *p) { - struct super_block *p_s_sb = p; - struct reiserfs_journal *journal = SB_JOURNAL (p_s_sb); - struct reiserfs_journal_list *jl; - struct list_head *entry; - - lock_kernel(); - if (!list_empty(&journal->j_journal_list)) { - /* last entry is the youngest, commit it and you get everything */ - entry = journal->j_journal_list.prev; - jl = JOURNAL_LIST_ENTRY(entry); - flush_commit_list(p_s_sb, jl, 1); - } - unlock_kernel(); - /* - * this is a little racey, but there's no harm in missing - * the filemap_fdata_write - */ - if (!atomic_read(&journal->j_async_throttle) && !reiserfs_is_journal_aborted (journal)) { - atomic_inc(&journal->j_async_throttle); - filemap_fdatawrite(p_s_sb->s_bdev->bd_inode->i_mapping); - atomic_dec(&journal->j_async_throttle); - } +static void flush_async_commits(void *p) +{ + struct super_block *p_s_sb = p; + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); + struct reiserfs_journal_list *jl; + struct list_head *entry; + + lock_kernel(); + if (!list_empty(&journal->j_journal_list)) { + /* last entry is the youngest, commit it and you get everything */ + entry = journal->j_journal_list.prev; + jl = JOURNAL_LIST_ENTRY(entry); + flush_commit_list(p_s_sb, jl, 1); + } + unlock_kernel(); + /* + * this is a little racey, but there's no harm in missing + * the filemap_fdata_write + */ + if (!atomic_read(&journal->j_async_throttle) + && !reiserfs_is_journal_aborted(journal)) { + atomic_inc(&journal->j_async_throttle); + filemap_fdatawrite(p_s_sb->s_bdev->bd_inode->i_mapping); + atomic_dec(&journal->j_async_throttle); + } } /* ** flushes any old transactions to disk ** ends the current transaction if it is too old */ -int reiserfs_flush_old_commits(struct super_block *p_s_sb) { - time_t now ; - struct reiserfs_transaction_handle th ; - struct reiserfs_journal *journal = SB_JOURNAL (p_s_sb); - - now = get_seconds(); - /* safety check so we don't flush while we are replaying the log during - * mount - */ - if (list_empty(&journal->j_journal_list)) { - return 0 ; - } - - /* check the current transaction. If there are no writers, and it is - * too old, finish it, and force the commit blocks to disk - */ - if (atomic_read(&journal->j_wcount) <= 0 && - journal->j_trans_start_time > 0 && - journal->j_len > 0 && - (now - journal->j_trans_start_time) > journal->j_max_trans_age) - { - if (!journal_join(&th, p_s_sb, 1)) { - reiserfs_prepare_for_journal(p_s_sb, SB_BUFFER_WITH_SB(p_s_sb), 1) ; - journal_mark_dirty(&th, p_s_sb, SB_BUFFER_WITH_SB(p_s_sb)) ; - - /* we're only being called from kreiserfsd, it makes no sense to do - ** an async commit so that kreiserfsd can do it later - */ - do_journal_end(&th, p_s_sb,1, COMMIT_NOW | WAIT) ; - } - } - return p_s_sb->s_dirt; +int reiserfs_flush_old_commits(struct super_block *p_s_sb) +{ + time_t now; + struct reiserfs_transaction_handle th; + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); + + now = get_seconds(); + /* safety check so we don't flush while we are replaying the log during + * mount + */ + if (list_empty(&journal->j_journal_list)) { + return 0; + } + + /* check the current transaction. If there are no writers, and it is + * too old, finish it, and force the commit blocks to disk + */ + if (atomic_read(&journal->j_wcount) <= 0 && + journal->j_trans_start_time > 0 && + journal->j_len > 0 && + (now - journal->j_trans_start_time) > journal->j_max_trans_age) { + if (!journal_join(&th, p_s_sb, 1)) { + reiserfs_prepare_for_journal(p_s_sb, + SB_BUFFER_WITH_SB(p_s_sb), + 1); + journal_mark_dirty(&th, p_s_sb, + SB_BUFFER_WITH_SB(p_s_sb)); + + /* we're only being called from kreiserfsd, it makes no sense to do + ** an async commit so that kreiserfsd can do it later + */ + do_journal_end(&th, p_s_sb, 1, COMMIT_NOW | WAIT); + } + } + return p_s_sb->s_dirt; } /* @@ -3160,101 +3475,108 @@ int reiserfs_flush_old_commits(struct super_block *p_s_sb) { ** ** Note, we can't allow the journal_end to proceed while there are still writers in the log. */ -static int check_journal_end(struct reiserfs_transaction_handle *th, struct super_block * p_s_sb, - unsigned long nblocks, int flags) { - - time_t now ; - int flush = flags & FLUSH_ALL ; - int commit_now = flags & COMMIT_NOW ; - int wait_on_commit = flags & WAIT ; - struct reiserfs_journal_list *jl; - struct reiserfs_journal *journal = SB_JOURNAL (p_s_sb); - - BUG_ON (!th->t_trans_id); - - if (th->t_trans_id != journal->j_trans_id) { - reiserfs_panic(th->t_super, "journal-1577: handle trans id %ld != current trans id %ld\n", - th->t_trans_id, journal->j_trans_id); - } - - journal->j_len_alloc -= (th->t_blocks_allocated - th->t_blocks_logged) ; - if (atomic_read(&(journal->j_wcount)) > 0) { /* <= 0 is allowed. unmounting might not call begin */ - atomic_dec(&(journal->j_wcount)) ; - } - - /* BUG, deal with case where j_len is 0, but people previously freed blocks need to be released - ** will be dealt with by next transaction that actually writes something, but should be taken - ** care of in this trans - */ - if (journal->j_len == 0) { - BUG(); - } - /* if wcount > 0, and we are called to with flush or commit_now, - ** we wait on j_join_wait. We will wake up when the last writer has - ** finished the transaction, and started it on its way to the disk. - ** Then, we flush the commit or journal list, and just return 0 - ** because the rest of journal end was already done for this transaction. - */ - if (atomic_read(&(journal->j_wcount)) > 0) { - if (flush || commit_now) { - unsigned trans_id ; - - jl = journal->j_current_jl; - trans_id = jl->j_trans_id; - if (wait_on_commit) - jl->j_state |= LIST_COMMIT_PENDING; - atomic_set(&(journal->j_jlock), 1) ; - if (flush) { - journal->j_next_full_flush = 1 ; - } - unlock_journal(p_s_sb) ; - - /* sleep while the current transaction is still j_jlocked */ - while(journal->j_trans_id == trans_id) { - if (atomic_read(&journal->j_jlock)) { - queue_log_writer(p_s_sb); - } else { - lock_journal(p_s_sb); - if (journal->j_trans_id == trans_id) { - atomic_set(&(journal->j_jlock), 1) ; - } - unlock_journal(p_s_sb); - } - } - if (journal->j_trans_id == trans_id) { - BUG(); - } - if (commit_now && journal_list_still_alive(p_s_sb, trans_id) && - wait_on_commit) - { - flush_commit_list(p_s_sb, jl, 1) ; - } - return 0 ; - } - unlock_journal(p_s_sb) ; - return 0 ; - } - - /* deal with old transactions where we are the last writers */ - now = get_seconds(); - if ((now - journal->j_trans_start_time) > journal->j_max_trans_age) { - commit_now = 1 ; - journal->j_next_async_flush = 1 ; - } - /* don't batch when someone is waiting on j_join_wait */ - /* don't batch when syncing the commit or flushing the whole trans */ - if (!(journal->j_must_wait > 0) && !(atomic_read(&(journal->j_jlock))) && !flush && !commit_now && - (journal->j_len < journal->j_max_batch) && - journal->j_len_alloc < journal->j_max_batch && journal->j_cnode_free > (journal->j_trans_max * 3)) { - journal->j_bcount++ ; - unlock_journal(p_s_sb) ; - return 0 ; - } - - if (journal->j_start > SB_ONDISK_JOURNAL_SIZE(p_s_sb)) { - reiserfs_panic(p_s_sb, "journal-003: journal_end: j_start (%ld) is too high\n", journal->j_start) ; - } - return 1 ; +static int check_journal_end(struct reiserfs_transaction_handle *th, + struct super_block *p_s_sb, unsigned long nblocks, + int flags) +{ + + time_t now; + int flush = flags & FLUSH_ALL; + int commit_now = flags & COMMIT_NOW; + int wait_on_commit = flags & WAIT; + struct reiserfs_journal_list *jl; + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); + + BUG_ON(!th->t_trans_id); + + if (th->t_trans_id != journal->j_trans_id) { + reiserfs_panic(th->t_super, + "journal-1577: handle trans id %ld != current trans id %ld\n", + th->t_trans_id, journal->j_trans_id); + } + + journal->j_len_alloc -= (th->t_blocks_allocated - th->t_blocks_logged); + if (atomic_read(&(journal->j_wcount)) > 0) { /* <= 0 is allowed. unmounting might not call begin */ + atomic_dec(&(journal->j_wcount)); + } + + /* BUG, deal with case where j_len is 0, but people previously freed blocks need to be released + ** will be dealt with by next transaction that actually writes something, but should be taken + ** care of in this trans + */ + if (journal->j_len == 0) { + BUG(); + } + /* if wcount > 0, and we are called to with flush or commit_now, + ** we wait on j_join_wait. We will wake up when the last writer has + ** finished the transaction, and started it on its way to the disk. + ** Then, we flush the commit or journal list, and just return 0 + ** because the rest of journal end was already done for this transaction. + */ + if (atomic_read(&(journal->j_wcount)) > 0) { + if (flush || commit_now) { + unsigned trans_id; + + jl = journal->j_current_jl; + trans_id = jl->j_trans_id; + if (wait_on_commit) + jl->j_state |= LIST_COMMIT_PENDING; + atomic_set(&(journal->j_jlock), 1); + if (flush) { + journal->j_next_full_flush = 1; + } + unlock_journal(p_s_sb); + + /* sleep while the current transaction is still j_jlocked */ + while (journal->j_trans_id == trans_id) { + if (atomic_read(&journal->j_jlock)) { + queue_log_writer(p_s_sb); + } else { + lock_journal(p_s_sb); + if (journal->j_trans_id == trans_id) { + atomic_set(&(journal->j_jlock), + 1); + } + unlock_journal(p_s_sb); + } + } + if (journal->j_trans_id == trans_id) { + BUG(); + } + if (commit_now + && journal_list_still_alive(p_s_sb, trans_id) + && wait_on_commit) { + flush_commit_list(p_s_sb, jl, 1); + } + return 0; + } + unlock_journal(p_s_sb); + return 0; + } + + /* deal with old transactions where we are the last writers */ + now = get_seconds(); + if ((now - journal->j_trans_start_time) > journal->j_max_trans_age) { + commit_now = 1; + journal->j_next_async_flush = 1; + } + /* don't batch when someone is waiting on j_join_wait */ + /* don't batch when syncing the commit or flushing the whole trans */ + if (!(journal->j_must_wait > 0) && !(atomic_read(&(journal->j_jlock))) + && !flush && !commit_now && (journal->j_len < journal->j_max_batch) + && journal->j_len_alloc < journal->j_max_batch + && journal->j_cnode_free > (journal->j_trans_max * 3)) { + journal->j_bcount++; + unlock_journal(p_s_sb); + return 0; + } + + if (journal->j_start > SB_ONDISK_JOURNAL_SIZE(p_s_sb)) { + reiserfs_panic(p_s_sb, + "journal-003: journal_end: j_start (%ld) is too high\n", + journal->j_start); + } + return 1; } /* @@ -3271,83 +3593,95 @@ static int check_journal_end(struct reiserfs_transaction_handle *th, struct supe ** ** Then remove it from the current transaction, decrementing any counters and filing it on the clean list. */ -int journal_mark_freed(struct reiserfs_transaction_handle *th, struct super_block *p_s_sb, b_blocknr_t blocknr) { - struct reiserfs_journal *journal = SB_JOURNAL (p_s_sb); - struct reiserfs_journal_cnode *cn = NULL ; - struct buffer_head *bh = NULL ; - struct reiserfs_list_bitmap *jb = NULL ; - int cleaned = 0 ; - BUG_ON (!th->t_trans_id); - - cn = get_journal_hash_dev(p_s_sb, journal->j_hash_table, blocknr); - if (cn && cn->bh) { - bh = cn->bh ; - get_bh(bh) ; - } - /* if it is journal new, we just remove it from this transaction */ - if (bh && buffer_journal_new(bh)) { - clear_buffer_journal_new (bh); - clear_prepared_bits(bh) ; - reiserfs_clean_and_file_buffer(bh) ; - cleaned = remove_from_transaction(p_s_sb, blocknr, cleaned) ; - } else { - /* set the bit for this block in the journal bitmap for this transaction */ - jb = journal->j_current_jl->j_list_bitmap; - if (!jb) { - reiserfs_panic(p_s_sb, "journal-1702: journal_mark_freed, journal_list_bitmap is NULL\n") ; - } - set_bit_in_list_bitmap(p_s_sb, blocknr, jb) ; - - /* Note, the entire while loop is not allowed to schedule. */ - - if (bh) { - clear_prepared_bits(bh) ; - reiserfs_clean_and_file_buffer(bh) ; - } - cleaned = remove_from_transaction(p_s_sb, blocknr, cleaned) ; - - /* find all older transactions with this block, make sure they don't try to write it out */ - cn = get_journal_hash_dev(p_s_sb,journal->j_list_hash_table, blocknr) ; - while (cn) { - if (p_s_sb == cn->sb && blocknr == cn->blocknr) { - set_bit(BLOCK_FREED, &cn->state) ; - if (cn->bh) { - if (!cleaned) { - /* remove_from_transaction will brelse the buffer if it was - ** in the current trans - */ - clear_buffer_journal_dirty (cn->bh); - clear_buffer_dirty(cn->bh); - clear_buffer_journal_test(cn->bh); - cleaned = 1 ; - put_bh(cn->bh) ; - if (atomic_read(&(cn->bh->b_count)) < 0) { - reiserfs_warning (p_s_sb, "journal-2138: cn->bh->b_count < 0"); - } - } - if (cn->jlist) { /* since we are clearing the bh, we MUST dec nonzerolen */ - atomic_dec(&(cn->jlist->j_nonzerolen)) ; - } - cn->bh = NULL ; - } - } - cn = cn->hnext ; - } - } - - if (bh) { - put_bh(bh) ; /* get_hash grabs the buffer */ - if (atomic_read(&(bh->b_count)) < 0) { - reiserfs_warning (p_s_sb, "journal-2165: bh->b_count < 0"); - } - } - return 0 ; -} - -void reiserfs_update_inode_transaction(struct inode *inode) { - struct reiserfs_journal *journal = SB_JOURNAL (inode->i_sb); - REISERFS_I(inode)->i_jl = journal->j_current_jl; - REISERFS_I(inode)->i_trans_id = journal->j_trans_id ; +int journal_mark_freed(struct reiserfs_transaction_handle *th, + struct super_block *p_s_sb, b_blocknr_t blocknr) +{ + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); + struct reiserfs_journal_cnode *cn = NULL; + struct buffer_head *bh = NULL; + struct reiserfs_list_bitmap *jb = NULL; + int cleaned = 0; + BUG_ON(!th->t_trans_id); + + cn = get_journal_hash_dev(p_s_sb, journal->j_hash_table, blocknr); + if (cn && cn->bh) { + bh = cn->bh; + get_bh(bh); + } + /* if it is journal new, we just remove it from this transaction */ + if (bh && buffer_journal_new(bh)) { + clear_buffer_journal_new(bh); + clear_prepared_bits(bh); + reiserfs_clean_and_file_buffer(bh); + cleaned = remove_from_transaction(p_s_sb, blocknr, cleaned); + } else { + /* set the bit for this block in the journal bitmap for this transaction */ + jb = journal->j_current_jl->j_list_bitmap; + if (!jb) { + reiserfs_panic(p_s_sb, + "journal-1702: journal_mark_freed, journal_list_bitmap is NULL\n"); + } + set_bit_in_list_bitmap(p_s_sb, blocknr, jb); + + /* Note, the entire while loop is not allowed to schedule. */ + + if (bh) { + clear_prepared_bits(bh); + reiserfs_clean_and_file_buffer(bh); + } + cleaned = remove_from_transaction(p_s_sb, blocknr, cleaned); + + /* find all older transactions with this block, make sure they don't try to write it out */ + cn = get_journal_hash_dev(p_s_sb, journal->j_list_hash_table, + blocknr); + while (cn) { + if (p_s_sb == cn->sb && blocknr == cn->blocknr) { + set_bit(BLOCK_FREED, &cn->state); + if (cn->bh) { + if (!cleaned) { + /* remove_from_transaction will brelse the buffer if it was + ** in the current trans + */ + clear_buffer_journal_dirty(cn-> + bh); + clear_buffer_dirty(cn->bh); + clear_buffer_journal_test(cn-> + bh); + cleaned = 1; + put_bh(cn->bh); + if (atomic_read + (&(cn->bh->b_count)) < 0) { + reiserfs_warning(p_s_sb, + "journal-2138: cn->bh->b_count < 0"); + } + } + if (cn->jlist) { /* since we are clearing the bh, we MUST dec nonzerolen */ + atomic_dec(& + (cn->jlist-> + j_nonzerolen)); + } + cn->bh = NULL; + } + } + cn = cn->hnext; + } + } + + if (bh) { + put_bh(bh); /* get_hash grabs the buffer */ + if (atomic_read(&(bh->b_count)) < 0) { + reiserfs_warning(p_s_sb, + "journal-2165: bh->b_count < 0"); + } + } + return 0; +} + +void reiserfs_update_inode_transaction(struct inode *inode) +{ + struct reiserfs_journal *journal = SB_JOURNAL(inode->i_sb); + REISERFS_I(inode)->i_jl = journal->j_current_jl; + REISERFS_I(inode)->i_trans_id = journal->j_trans_id; } /* @@ -3355,99 +3689,102 @@ void reiserfs_update_inode_transaction(struct inode *inode) { * if a transaction was actually committed and the barrier was done */ static int __commit_trans_jl(struct inode *inode, unsigned long id, - struct reiserfs_journal_list *jl) + struct reiserfs_journal_list *jl) { - struct reiserfs_transaction_handle th ; - struct super_block *sb = inode->i_sb ; - struct reiserfs_journal *journal = SB_JOURNAL (sb); - int ret = 0; + struct reiserfs_transaction_handle th; + struct super_block *sb = inode->i_sb; + struct reiserfs_journal *journal = SB_JOURNAL(sb); + int ret = 0; + + /* is it from the current transaction, or from an unknown transaction? */ + if (id == journal->j_trans_id) { + jl = journal->j_current_jl; + /* try to let other writers come in and grow this transaction */ + let_transaction_grow(sb, id); + if (journal->j_trans_id != id) { + goto flush_commit_only; + } - /* is it from the current transaction, or from an unknown transaction? */ - if (id == journal->j_trans_id) { - jl = journal->j_current_jl; - /* try to let other writers come in and grow this transaction */ - let_transaction_grow(sb, id); - if (journal->j_trans_id != id) { - goto flush_commit_only; - } + ret = journal_begin(&th, sb, 1); + if (ret) + return ret; + + /* someone might have ended this transaction while we joined */ + if (journal->j_trans_id != id) { + reiserfs_prepare_for_journal(sb, SB_BUFFER_WITH_SB(sb), + 1); + journal_mark_dirty(&th, sb, SB_BUFFER_WITH_SB(sb)); + ret = journal_end(&th, sb, 1); + goto flush_commit_only; + } - ret = journal_begin(&th, sb, 1) ; - if (ret) - return ret; + ret = journal_end_sync(&th, sb, 1); + if (!ret) + ret = 1; - /* someone might have ended this transaction while we joined */ - if (journal->j_trans_id != id) { - reiserfs_prepare_for_journal(sb, SB_BUFFER_WITH_SB(sb), 1) ; - journal_mark_dirty(&th, sb, SB_BUFFER_WITH_SB(sb)) ; - ret = journal_end(&th, sb, 1) ; - goto flush_commit_only; + } else { + /* this gets tricky, we have to make sure the journal list in + * the inode still exists. We know the list is still around + * if we've got a larger transaction id than the oldest list + */ + flush_commit_only: + if (journal_list_still_alive(inode->i_sb, id)) { + /* + * we only set ret to 1 when we know for sure + * the barrier hasn't been started yet on the commit + * block. + */ + if (atomic_read(&jl->j_commit_left) > 1) + ret = 1; + flush_commit_list(sb, jl, 1); + if (journal->j_errno) + ret = journal->j_errno; + } } + /* otherwise the list is gone, and long since committed */ + return ret; +} - ret = journal_end_sync(&th, sb, 1) ; - if (!ret) - ret = 1; +int reiserfs_commit_for_inode(struct inode *inode) +{ + unsigned long id = REISERFS_I(inode)->i_trans_id; + struct reiserfs_journal_list *jl = REISERFS_I(inode)->i_jl; - } else { - /* this gets tricky, we have to make sure the journal list in - * the inode still exists. We know the list is still around - * if we've got a larger transaction id than the oldest list + /* for the whole inode, assume unset id means it was + * changed in the current transaction. More conservative */ -flush_commit_only: - if (journal_list_still_alive(inode->i_sb, id)) { - /* - * we only set ret to 1 when we know for sure - * the barrier hasn't been started yet on the commit - * block. - */ - if (atomic_read(&jl->j_commit_left) > 1) - ret = 1; - flush_commit_list(sb, jl, 1) ; - if (journal->j_errno) - ret = journal->j_errno; - } - } - /* otherwise the list is gone, and long since committed */ - return ret; -} - -int reiserfs_commit_for_inode(struct inode *inode) { - unsigned long id = REISERFS_I(inode)->i_trans_id; - struct reiserfs_journal_list *jl = REISERFS_I(inode)->i_jl; - - /* for the whole inode, assume unset id means it was - * changed in the current transaction. More conservative - */ - if (!id || !jl) { - reiserfs_update_inode_transaction(inode) ; - id = REISERFS_I(inode)->i_trans_id; - /* jl will be updated in __commit_trans_jl */ - } - - return __commit_trans_jl(inode, id, jl); -} - -void reiserfs_restore_prepared_buffer(struct super_block *p_s_sb, - struct buffer_head *bh) { - struct reiserfs_journal *journal = SB_JOURNAL (p_s_sb); - PROC_INFO_INC( p_s_sb, journal.restore_prepared ); - if (!bh) { - return ; - } - if (test_clear_buffer_journal_restore_dirty (bh) && - buffer_journal_dirty(bh)) { - struct reiserfs_journal_cnode *cn; - cn = get_journal_hash_dev(p_s_sb, - journal->j_list_hash_table, - bh->b_blocknr); - if (cn && can_dirty(cn)) { - set_buffer_journal_test (bh); - mark_buffer_dirty(bh); - } - } - clear_buffer_journal_prepared (bh); -} - -extern struct tree_balance *cur_tb ; + if (!id || !jl) { + reiserfs_update_inode_transaction(inode); + id = REISERFS_I(inode)->i_trans_id; + /* jl will be updated in __commit_trans_jl */ + } + + return __commit_trans_jl(inode, id, jl); +} + +void reiserfs_restore_prepared_buffer(struct super_block *p_s_sb, + struct buffer_head *bh) +{ + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); + PROC_INFO_INC(p_s_sb, journal.restore_prepared); + if (!bh) { + return; + } + if (test_clear_buffer_journal_restore_dirty(bh) && + buffer_journal_dirty(bh)) { + struct reiserfs_journal_cnode *cn; + cn = get_journal_hash_dev(p_s_sb, + journal->j_list_hash_table, + bh->b_blocknr); + if (cn && can_dirty(cn)) { + set_buffer_journal_test(bh); + mark_buffer_dirty(bh); + } + } + clear_buffer_journal_prepared(bh); +} + +extern struct tree_balance *cur_tb; /* ** before we can change a metadata block, we have to make sure it won't ** be written to disk while we are altering it. So, we must: @@ -3456,39 +3793,41 @@ extern struct tree_balance *cur_tb ; ** */ int reiserfs_prepare_for_journal(struct super_block *p_s_sb, - struct buffer_head *bh, int wait) { - PROC_INFO_INC( p_s_sb, journal.prepare ); - - if (test_set_buffer_locked(bh)) { - if (!wait) - return 0; - lock_buffer(bh); - } - set_buffer_journal_prepared (bh); - if (test_clear_buffer_dirty(bh) && buffer_journal_dirty(bh)) { - clear_buffer_journal_test (bh); - set_buffer_journal_restore_dirty (bh); - } - unlock_buffer(bh); - return 1; -} - -static void flush_old_journal_lists(struct super_block *s) { - struct reiserfs_journal *journal = SB_JOURNAL (s); - struct reiserfs_journal_list *jl; - struct list_head *entry; - time_t now = get_seconds(); - - while(!list_empty(&journal->j_journal_list)) { - entry = journal->j_journal_list.next; - jl = JOURNAL_LIST_ENTRY(entry); - /* this check should always be run, to send old lists to disk */ - if (jl->j_timestamp < (now - (JOURNAL_MAX_TRANS_AGE * 4))) { - flush_used_journal_lists(s, jl); - } else { - break; + struct buffer_head *bh, int wait) +{ + PROC_INFO_INC(p_s_sb, journal.prepare); + + if (test_set_buffer_locked(bh)) { + if (!wait) + return 0; + lock_buffer(bh); + } + set_buffer_journal_prepared(bh); + if (test_clear_buffer_dirty(bh) && buffer_journal_dirty(bh)) { + clear_buffer_journal_test(bh); + set_buffer_journal_restore_dirty(bh); + } + unlock_buffer(bh); + return 1; +} + +static void flush_old_journal_lists(struct super_block *s) +{ + struct reiserfs_journal *journal = SB_JOURNAL(s); + struct reiserfs_journal_list *jl; + struct list_head *entry; + time_t now = get_seconds(); + + while (!list_empty(&journal->j_journal_list)) { + entry = journal->j_journal_list.next; + jl = JOURNAL_LIST_ENTRY(entry); + /* this check should always be run, to send old lists to disk */ + if (jl->j_timestamp < (now - (JOURNAL_MAX_TRANS_AGE * 4))) { + flush_used_journal_lists(s, jl); + } else { + break; + } } - } } /* @@ -3501,374 +3840,390 @@ static void flush_old_journal_lists(struct super_block *s) { ** If the journal is aborted, we just clean up. Things like flushing ** journal lists, etc just won't happen. */ -static int do_journal_end(struct reiserfs_transaction_handle *th, struct super_block * p_s_sb, unsigned long nblocks, - int flags) { - struct reiserfs_journal *journal = SB_JOURNAL (p_s_sb); - struct reiserfs_journal_cnode *cn, *next, *jl_cn; - struct reiserfs_journal_cnode *last_cn = NULL; - struct reiserfs_journal_desc *desc ; - struct reiserfs_journal_commit *commit ; - struct buffer_head *c_bh ; /* commit bh */ - struct buffer_head *d_bh ; /* desc bh */ - int cur_write_start = 0 ; /* start index of current log write */ - int old_start ; - int i ; - int flush = flags & FLUSH_ALL ; - int wait_on_commit = flags & WAIT ; - struct reiserfs_journal_list *jl, *temp_jl; - struct list_head *entry, *safe; - unsigned long jindex; - unsigned long commit_trans_id; - int trans_half; - - BUG_ON (th->t_refcount > 1); - BUG_ON (!th->t_trans_id); - - current->journal_info = th->t_handle_save; - reiserfs_check_lock_depth(p_s_sb, "journal end"); - if (journal->j_len == 0) { - reiserfs_prepare_for_journal(p_s_sb, SB_BUFFER_WITH_SB(p_s_sb), 1) ; - journal_mark_dirty(th, p_s_sb, SB_BUFFER_WITH_SB(p_s_sb)) ; - } - - lock_journal(p_s_sb) ; - if (journal->j_next_full_flush) { - flags |= FLUSH_ALL ; - flush = 1 ; - } - if (journal->j_next_async_flush) { - flags |= COMMIT_NOW | WAIT; - wait_on_commit = 1; - } - - /* check_journal_end locks the journal, and unlocks if it does not return 1 - ** it tells us if we should continue with the journal_end, or just return - */ - if (!check_journal_end(th, p_s_sb, nblocks, flags)) { - p_s_sb->s_dirt = 1; - wake_queued_writers(p_s_sb); - reiserfs_async_progress_wait(p_s_sb); - goto out ; - } - - /* check_journal_end might set these, check again */ - if (journal->j_next_full_flush) { - flush = 1 ; - } - - /* - ** j must wait means we have to flush the log blocks, and the real blocks for - ** this transaction - */ - if (journal->j_must_wait > 0) { - flush = 1 ; - } +static int do_journal_end(struct reiserfs_transaction_handle *th, + struct super_block *p_s_sb, unsigned long nblocks, + int flags) +{ + struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb); + struct reiserfs_journal_cnode *cn, *next, *jl_cn; + struct reiserfs_journal_cnode *last_cn = NULL; + struct reiserfs_journal_desc *desc; + struct reiserfs_journal_commit *commit; + struct buffer_head *c_bh; /* commit bh */ + struct buffer_head *d_bh; /* desc bh */ + int cur_write_start = 0; /* start index of current log write */ + int old_start; + int i; + int flush = flags & FLUSH_ALL; + int wait_on_commit = flags & WAIT; + struct reiserfs_journal_list *jl, *temp_jl; + struct list_head *entry, *safe; + unsigned long jindex; + unsigned long commit_trans_id; + int trans_half; + + BUG_ON(th->t_refcount > 1); + BUG_ON(!th->t_trans_id); + + put_fs_excl(); + current->journal_info = th->t_handle_save; + reiserfs_check_lock_depth(p_s_sb, "journal end"); + if (journal->j_len == 0) { + reiserfs_prepare_for_journal(p_s_sb, SB_BUFFER_WITH_SB(p_s_sb), + 1); + journal_mark_dirty(th, p_s_sb, SB_BUFFER_WITH_SB(p_s_sb)); + } + lock_journal(p_s_sb); + if (journal->j_next_full_flush) { + flags |= FLUSH_ALL; + flush = 1; + } + if (journal->j_next_async_flush) { + flags |= COMMIT_NOW | WAIT; + wait_on_commit = 1; + } + + /* check_journal_end locks the journal, and unlocks if it does not return 1 + ** it tells us if we should continue with the journal_end, or just return + */ + if (!check_journal_end(th, p_s_sb, nblocks, flags)) { + p_s_sb->s_dirt = 1; + wake_queued_writers(p_s_sb); + reiserfs_async_progress_wait(p_s_sb); + goto out; + } + + /* check_journal_end might set these, check again */ + if (journal->j_next_full_flush) { + flush = 1; + } + + /* + ** j must wait means we have to flush the log blocks, and the real blocks for + ** this transaction + */ + if (journal->j_must_wait > 0) { + flush = 1; + } #ifdef REISERFS_PREALLOCATE - /* quota ops might need to nest, setup the journal_info pointer for them */ - current->journal_info = th ; - reiserfs_discard_all_prealloc(th); /* it should not involve new blocks into - * the transaction */ - current->journal_info = th->t_handle_save ; + /* quota ops might need to nest, setup the journal_info pointer for them */ + current->journal_info = th; + reiserfs_discard_all_prealloc(th); /* it should not involve new blocks into + * the transaction */ + current->journal_info = th->t_handle_save; #endif - - /* setup description block */ - d_bh = journal_getblk(p_s_sb, SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + journal->j_start) ; - set_buffer_uptodate(d_bh); - desc = (struct reiserfs_journal_desc *)(d_bh)->b_data ; - memset(d_bh->b_data, 0, d_bh->b_size) ; - memcpy(get_journal_desc_magic (d_bh), JOURNAL_DESC_MAGIC, 8) ; - set_desc_trans_id(desc, journal->j_trans_id) ; - - /* setup commit block. Don't write (keep it clean too) this one until after everyone else is written */ - c_bh = journal_getblk(p_s_sb, SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + - ((journal->j_start + journal->j_len + 1) % SB_ONDISK_JOURNAL_SIZE(p_s_sb))) ; - commit = (struct reiserfs_journal_commit *)c_bh->b_data ; - memset(c_bh->b_data, 0, c_bh->b_size) ; - set_commit_trans_id(commit, journal->j_trans_id) ; - set_buffer_uptodate(c_bh) ; - - /* init this journal list */ - jl = journal->j_current_jl; - - /* we lock the commit before doing anything because - * we want to make sure nobody tries to run flush_commit_list until - * the new transaction is fully setup, and we've already flushed the - * ordered bh list - */ - down(&jl->j_commit_lock); - - /* save the transaction id in case we need to commit it later */ - commit_trans_id = jl->j_trans_id; - - atomic_set(&jl->j_older_commits_done, 0) ; - jl->j_trans_id = journal->j_trans_id ; - jl->j_timestamp = journal->j_trans_start_time ; - jl->j_commit_bh = c_bh ; - jl->j_start = journal->j_start ; - jl->j_len = journal->j_len ; - atomic_set(&jl->j_nonzerolen, journal->j_len) ; - atomic_set(&jl->j_commit_left, journal->j_len + 2); - jl->j_realblock = NULL ; - - /* The ENTIRE FOR LOOP MUST not cause schedule to occur. - ** for each real block, add it to the journal list hash, - ** copy into real block index array in the commit or desc block - */ - trans_half = journal_trans_half(p_s_sb->s_blocksize); - for (i = 0, cn = journal->j_first ; cn ; cn = cn->next, i++) { - if (buffer_journaled (cn->bh)) { - jl_cn = get_cnode(p_s_sb) ; - if (!jl_cn) { - reiserfs_panic(p_s_sb, "journal-1676, get_cnode returned NULL\n") ; - } - if (i == 0) { - jl->j_realblock = jl_cn ; - } - jl_cn->prev = last_cn ; - jl_cn->next = NULL ; - if (last_cn) { - last_cn->next = jl_cn ; - } - last_cn = jl_cn ; - /* make sure the block we are trying to log is not a block - of journal or reserved area */ - - if (is_block_in_log_or_reserved_area(p_s_sb, cn->bh->b_blocknr)) { - reiserfs_panic(p_s_sb, "journal-2332: Trying to log block %lu, which is a log block\n", cn->bh->b_blocknr) ; - } - jl_cn->blocknr = cn->bh->b_blocknr ; - jl_cn->state = 0 ; - jl_cn->sb = p_s_sb; - jl_cn->bh = cn->bh ; - jl_cn->jlist = jl; - insert_journal_hash(journal->j_list_hash_table, jl_cn) ; - if (i < trans_half) { - desc->j_realblock[i] = cpu_to_le32(cn->bh->b_blocknr) ; - } else { - commit->j_realblock[i - trans_half] = cpu_to_le32(cn->bh->b_blocknr) ; - } - } else { - i-- ; - } - } - set_desc_trans_len(desc, journal->j_len) ; - set_desc_mount_id(desc, journal->j_mount_id) ; - set_desc_trans_id(desc, journal->j_trans_id) ; - set_commit_trans_len(commit, journal->j_len); - - /* special check in case all buffers in the journal were marked for not logging */ - if (journal->j_len == 0) { - BUG(); - } - - /* we're about to dirty all the log blocks, mark the description block - * dirty now too. Don't mark the commit block dirty until all the - * others are on disk - */ - mark_buffer_dirty(d_bh); - - /* first data block is j_start + 1, so add one to cur_write_start wherever you use it */ - cur_write_start = journal->j_start ; - cn = journal->j_first ; - jindex = 1 ; /* start at one so we don't get the desc again */ - while(cn) { - clear_buffer_journal_new (cn->bh); - /* copy all the real blocks into log area. dirty log blocks */ - if (buffer_journaled (cn->bh)) { - struct buffer_head *tmp_bh ; - char *addr; - struct page *page; - tmp_bh = journal_getblk(p_s_sb, SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + - ((cur_write_start + jindex) % SB_ONDISK_JOURNAL_SIZE(p_s_sb))) ; - set_buffer_uptodate(tmp_bh); - page = cn->bh->b_page; - addr = kmap(page); - memcpy(tmp_bh->b_data, addr + offset_in_page(cn->bh->b_data), - cn->bh->b_size); - kunmap(page); - mark_buffer_dirty(tmp_bh); - jindex++ ; - set_buffer_journal_dirty (cn->bh); - clear_buffer_journaled (cn->bh); - } else { - /* JDirty cleared sometime during transaction. don't log this one */ - reiserfs_warning(p_s_sb, "journal-2048: do_journal_end: BAD, buffer in journal hash, but not JDirty!") ; - brelse(cn->bh) ; - } - next = cn->next ; - free_cnode(p_s_sb, cn) ; - cn = next ; - cond_resched(); - } - - /* we are done with both the c_bh and d_bh, but - ** c_bh must be written after all other commit blocks, - ** so we dirty/relse c_bh in flush_commit_list, with commit_left <= 1. - */ - - journal->j_current_jl = alloc_journal_list(p_s_sb); - - /* now it is safe to insert this transaction on the main list */ - list_add_tail(&jl->j_list, &journal->j_journal_list); - list_add_tail(&jl->j_working_list, &journal->j_working_list); - journal->j_num_work_lists++; - - /* reset journal values for the next transaction */ - old_start = journal->j_start ; - journal->j_start = (journal->j_start + journal->j_len + 2) % SB_ONDISK_JOURNAL_SIZE(p_s_sb); - atomic_set(&(journal->j_wcount), 0) ; - journal->j_bcount = 0 ; - journal->j_last = NULL ; - journal->j_first = NULL ; - journal->j_len = 0 ; - journal->j_trans_start_time = 0 ; - journal->j_trans_id++ ; - journal->j_current_jl->j_trans_id = journal->j_trans_id; - journal->j_must_wait = 0 ; - journal->j_len_alloc = 0 ; - journal->j_next_full_flush = 0 ; - journal->j_next_async_flush = 0 ; - init_journal_hash(p_s_sb) ; - - // make sure reiserfs_add_jh sees the new current_jl before we - // write out the tails - smp_mb(); - - /* tail conversion targets have to hit the disk before we end the - * transaction. Otherwise a later transaction might repack the tail - * before this transaction commits, leaving the data block unflushed and - * clean, if we crash before the later transaction commits, the data block - * is lost. - */ - if (!list_empty(&jl->j_tail_bh_list)) { - unlock_kernel(); - write_ordered_buffers(&journal->j_dirty_buffers_lock, - journal, jl, &jl->j_tail_bh_list); - lock_kernel(); - } - if (!list_empty(&jl->j_tail_bh_list)) - BUG(); - up(&jl->j_commit_lock); - - /* honor the flush wishes from the caller, simple commits can - ** be done outside the journal lock, they are done below - ** - ** if we don't flush the commit list right now, we put it into - ** the work queue so the people waiting on the async progress work - ** queue don't wait for this proc to flush journal lists and such. - */ - if (flush) { - flush_commit_list(p_s_sb, jl, 1) ; - flush_journal_list(p_s_sb, jl, 1) ; - } else if (!(jl->j_state & LIST_COMMIT_PENDING)) - queue_delayed_work(commit_wq, &journal->j_work, HZ/10); - - - /* if the next transaction has any chance of wrapping, flush - ** transactions that might get overwritten. If any journal lists are very - ** old flush them as well. - */ -first_jl: - list_for_each_safe(entry, safe, &journal->j_journal_list) { - temp_jl = JOURNAL_LIST_ENTRY(entry); - if (journal->j_start <= temp_jl->j_start) { - if ((journal->j_start + journal->j_trans_max + 1) >= - temp_jl->j_start) - { - flush_used_journal_lists(p_s_sb, temp_jl); - goto first_jl; - } else if ((journal->j_start + - journal->j_trans_max + 1) < - SB_ONDISK_JOURNAL_SIZE(p_s_sb)) - { - /* if we don't cross into the next transaction and we don't - * wrap, there is no way we can overlap any later transactions - * break now - */ - break; - } - } else if ((journal->j_start + - journal->j_trans_max + 1) > - SB_ONDISK_JOURNAL_SIZE(p_s_sb)) - { - if (((journal->j_start + journal->j_trans_max + 1) % - SB_ONDISK_JOURNAL_SIZE(p_s_sb)) >= temp_jl->j_start) - { - flush_used_journal_lists(p_s_sb, temp_jl); - goto first_jl; - } else { - /* we don't overlap anything from out start to the end of the - * log, and our wrapped portion doesn't overlap anything at - * the start of the log. We can break - */ - break; - } - } - } - flush_old_journal_lists(p_s_sb); - - journal->j_current_jl->j_list_bitmap = get_list_bitmap(p_s_sb, journal->j_current_jl) ; - - if (!(journal->j_current_jl->j_list_bitmap)) { - reiserfs_panic(p_s_sb, "journal-1996: do_journal_end, could not get a list bitmap\n") ; - } - - atomic_set(&(journal->j_jlock), 0) ; - unlock_journal(p_s_sb) ; - /* wake up any body waiting to join. */ - clear_bit(J_WRITERS_QUEUED, &journal->j_state); - wake_up(&(journal->j_join_wait)) ; - - if (!flush && wait_on_commit && - journal_list_still_alive(p_s_sb, commit_trans_id)) { - flush_commit_list(p_s_sb, jl, 1) ; - } -out: - reiserfs_check_lock_depth(p_s_sb, "journal end2"); - - memset (th, 0, sizeof (*th)); - /* Re-set th->t_super, so we can properly keep track of how many - * persistent transactions there are. We need to do this so if this - * call is part of a failed restart_transaction, we can free it later */ - th->t_super = p_s_sb; - - return journal->j_errno; -} - -static void -__reiserfs_journal_abort_hard (struct super_block *sb) -{ - struct reiserfs_journal *journal = SB_JOURNAL (sb); - if (test_bit (J_ABORTED, &journal->j_state)) - return; - - printk (KERN_CRIT "REISERFS: Aborting journal for filesystem on %s\n", - reiserfs_bdevname (sb)); - - sb->s_flags |= MS_RDONLY; - set_bit (J_ABORTED, &journal->j_state); + + /* setup description block */ + d_bh = + journal_getblk(p_s_sb, + SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + + journal->j_start); + set_buffer_uptodate(d_bh); + desc = (struct reiserfs_journal_desc *)(d_bh)->b_data; + memset(d_bh->b_data, 0, d_bh->b_size); + memcpy(get_journal_desc_magic(d_bh), JOURNAL_DESC_MAGIC, 8); + set_desc_trans_id(desc, journal->j_trans_id); + + /* setup commit block. Don't write (keep it clean too) this one until after everyone else is written */ + c_bh = journal_getblk(p_s_sb, SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + + ((journal->j_start + journal->j_len + + 1) % SB_ONDISK_JOURNAL_SIZE(p_s_sb))); + commit = (struct reiserfs_journal_commit *)c_bh->b_data; + memset(c_bh->b_data, 0, c_bh->b_size); + set_commit_trans_id(commit, journal->j_trans_id); + set_buffer_uptodate(c_bh); + + /* init this journal list */ + jl = journal->j_current_jl; + + /* we lock the commit before doing anything because + * we want to make sure nobody tries to run flush_commit_list until + * the new transaction is fully setup, and we've already flushed the + * ordered bh list + */ + down(&jl->j_commit_lock); + + /* save the transaction id in case we need to commit it later */ + commit_trans_id = jl->j_trans_id; + + atomic_set(&jl->j_older_commits_done, 0); + jl->j_trans_id = journal->j_trans_id; + jl->j_timestamp = journal->j_trans_start_time; + jl->j_commit_bh = c_bh; + jl->j_start = journal->j_start; + jl->j_len = journal->j_len; + atomic_set(&jl->j_nonzerolen, journal->j_len); + atomic_set(&jl->j_commit_left, journal->j_len + 2); + jl->j_realblock = NULL; + + /* The ENTIRE FOR LOOP MUST not cause schedule to occur. + ** for each real block, add it to the journal list hash, + ** copy into real block index array in the commit or desc block + */ + trans_half = journal_trans_half(p_s_sb->s_blocksize); + for (i = 0, cn = journal->j_first; cn; cn = cn->next, i++) { + if (buffer_journaled(cn->bh)) { + jl_cn = get_cnode(p_s_sb); + if (!jl_cn) { + reiserfs_panic(p_s_sb, + "journal-1676, get_cnode returned NULL\n"); + } + if (i == 0) { + jl->j_realblock = jl_cn; + } + jl_cn->prev = last_cn; + jl_cn->next = NULL; + if (last_cn) { + last_cn->next = jl_cn; + } + last_cn = jl_cn; + /* make sure the block we are trying to log is not a block + of journal or reserved area */ + + if (is_block_in_log_or_reserved_area + (p_s_sb, cn->bh->b_blocknr)) { + reiserfs_panic(p_s_sb, + "journal-2332: Trying to log block %lu, which is a log block\n", + cn->bh->b_blocknr); + } + jl_cn->blocknr = cn->bh->b_blocknr; + jl_cn->state = 0; + jl_cn->sb = p_s_sb; + jl_cn->bh = cn->bh; + jl_cn->jlist = jl; + insert_journal_hash(journal->j_list_hash_table, jl_cn); + if (i < trans_half) { + desc->j_realblock[i] = + cpu_to_le32(cn->bh->b_blocknr); + } else { + commit->j_realblock[i - trans_half] = + cpu_to_le32(cn->bh->b_blocknr); + } + } else { + i--; + } + } + set_desc_trans_len(desc, journal->j_len); + set_desc_mount_id(desc, journal->j_mount_id); + set_desc_trans_id(desc, journal->j_trans_id); + set_commit_trans_len(commit, journal->j_len); + + /* special check in case all buffers in the journal were marked for not logging */ + if (journal->j_len == 0) { + BUG(); + } + + /* we're about to dirty all the log blocks, mark the description block + * dirty now too. Don't mark the commit block dirty until all the + * others are on disk + */ + mark_buffer_dirty(d_bh); + + /* first data block is j_start + 1, so add one to cur_write_start wherever you use it */ + cur_write_start = journal->j_start; + cn = journal->j_first; + jindex = 1; /* start at one so we don't get the desc again */ + while (cn) { + clear_buffer_journal_new(cn->bh); + /* copy all the real blocks into log area. dirty log blocks */ + if (buffer_journaled(cn->bh)) { + struct buffer_head *tmp_bh; + char *addr; + struct page *page; + tmp_bh = + journal_getblk(p_s_sb, + SB_ONDISK_JOURNAL_1st_BLOCK(p_s_sb) + + ((cur_write_start + + jindex) % + SB_ONDISK_JOURNAL_SIZE(p_s_sb))); + set_buffer_uptodate(tmp_bh); + page = cn->bh->b_page; + addr = kmap(page); + memcpy(tmp_bh->b_data, + addr + offset_in_page(cn->bh->b_data), + cn->bh->b_size); + kunmap(page); + mark_buffer_dirty(tmp_bh); + jindex++; + set_buffer_journal_dirty(cn->bh); + clear_buffer_journaled(cn->bh); + } else { + /* JDirty cleared sometime during transaction. don't log this one */ + reiserfs_warning(p_s_sb, + "journal-2048: do_journal_end: BAD, buffer in journal hash, but not JDirty!"); + brelse(cn->bh); + } + next = cn->next; + free_cnode(p_s_sb, cn); + cn = next; + cond_resched(); + } + + /* we are done with both the c_bh and d_bh, but + ** c_bh must be written after all other commit blocks, + ** so we dirty/relse c_bh in flush_commit_list, with commit_left <= 1. + */ + + journal->j_current_jl = alloc_journal_list(p_s_sb); + + /* now it is safe to insert this transaction on the main list */ + list_add_tail(&jl->j_list, &journal->j_journal_list); + list_add_tail(&jl->j_working_list, &journal->j_working_list); + journal->j_num_work_lists++; + + /* reset journal values for the next transaction */ + old_start = journal->j_start; + journal->j_start = + (journal->j_start + journal->j_len + + 2) % SB_ONDISK_JOURNAL_SIZE(p_s_sb); + atomic_set(&(journal->j_wcount), 0); + journal->j_bcount = 0; + journal->j_last = NULL; + journal->j_first = NULL; + journal->j_len = 0; + journal->j_trans_start_time = 0; + journal->j_trans_id++; + journal->j_current_jl->j_trans_id = journal->j_trans_id; + journal->j_must_wait = 0; + journal->j_len_alloc = 0; + journal->j_next_full_flush = 0; + journal->j_next_async_flush = 0; + init_journal_hash(p_s_sb); + + // make sure reiserfs_add_jh sees the new current_jl before we + // write out the tails + smp_mb(); + + /* tail conversion targets have to hit the disk before we end the + * transaction. Otherwise a later transaction might repack the tail + * before this transaction commits, leaving the data block unflushed and + * clean, if we crash before the later transaction commits, the data block + * is lost. + */ + if (!list_empty(&jl->j_tail_bh_list)) { + unlock_kernel(); + write_ordered_buffers(&journal->j_dirty_buffers_lock, + journal, jl, &jl->j_tail_bh_list); + lock_kernel(); + } + if (!list_empty(&jl->j_tail_bh_list)) + BUG(); + up(&jl->j_commit_lock); + + /* honor the flush wishes from the caller, simple commits can + ** be done outside the journal lock, they are done below + ** + ** if we don't flush the commit list right now, we put it into + ** the work queue so the people waiting on the async progress work + ** queue don't wait for this proc to flush journal lists and such. + */ + if (flush) { + flush_commit_list(p_s_sb, jl, 1); + flush_journal_list(p_s_sb, jl, 1); + } else if (!(jl->j_state & LIST_COMMIT_PENDING)) + queue_delayed_work(commit_wq, &journal->j_work, HZ / 10); + + /* if the next transaction has any chance of wrapping, flush + ** transactions that might get overwritten. If any journal lists are very + ** old flush them as well. + */ + first_jl: + list_for_each_safe(entry, safe, &journal->j_journal_list) { + temp_jl = JOURNAL_LIST_ENTRY(entry); + if (journal->j_start <= temp_jl->j_start) { + if ((journal->j_start + journal->j_trans_max + 1) >= + temp_jl->j_start) { + flush_used_journal_lists(p_s_sb, temp_jl); + goto first_jl; + } else if ((journal->j_start + + journal->j_trans_max + 1) < + SB_ONDISK_JOURNAL_SIZE(p_s_sb)) { + /* if we don't cross into the next transaction and we don't + * wrap, there is no way we can overlap any later transactions + * break now + */ + break; + } + } else if ((journal->j_start + + journal->j_trans_max + 1) > + SB_ONDISK_JOURNAL_SIZE(p_s_sb)) { + if (((journal->j_start + journal->j_trans_max + 1) % + SB_ONDISK_JOURNAL_SIZE(p_s_sb)) >= + temp_jl->j_start) { + flush_used_journal_lists(p_s_sb, temp_jl); + goto first_jl; + } else { + /* we don't overlap anything from out start to the end of the + * log, and our wrapped portion doesn't overlap anything at + * the start of the log. We can break + */ + break; + } + } + } + flush_old_journal_lists(p_s_sb); + + journal->j_current_jl->j_list_bitmap = + get_list_bitmap(p_s_sb, journal->j_current_jl); + + if (!(journal->j_current_jl->j_list_bitmap)) { + reiserfs_panic(p_s_sb, + "journal-1996: do_journal_end, could not get a list bitmap\n"); + } + + atomic_set(&(journal->j_jlock), 0); + unlock_journal(p_s_sb); + /* wake up any body waiting to join. */ + clear_bit(J_WRITERS_QUEUED, &journal->j_state); + wake_up(&(journal->j_join_wait)); + + if (!flush && wait_on_commit && + journal_list_still_alive(p_s_sb, commit_trans_id)) { + flush_commit_list(p_s_sb, jl, 1); + } + out: + reiserfs_check_lock_depth(p_s_sb, "journal end2"); + + memset(th, 0, sizeof(*th)); + /* Re-set th->t_super, so we can properly keep track of how many + * persistent transactions there are. We need to do this so if this + * call is part of a failed restart_transaction, we can free it later */ + th->t_super = p_s_sb; + + return journal->j_errno; +} + +static void __reiserfs_journal_abort_hard(struct super_block *sb) +{ + struct reiserfs_journal *journal = SB_JOURNAL(sb); + if (test_bit(J_ABORTED, &journal->j_state)) + return; + + printk(KERN_CRIT "REISERFS: Aborting journal for filesystem on %s\n", + reiserfs_bdevname(sb)); + + sb->s_flags |= MS_RDONLY; + set_bit(J_ABORTED, &journal->j_state); #ifdef CONFIG_REISERFS_CHECK - dump_stack(); + dump_stack(); #endif } -static void -__reiserfs_journal_abort_soft (struct super_block *sb, int errno) +static void __reiserfs_journal_abort_soft(struct super_block *sb, int errno) { - struct reiserfs_journal *journal = SB_JOURNAL (sb); - if (test_bit (J_ABORTED, &journal->j_state)) - return; + struct reiserfs_journal *journal = SB_JOURNAL(sb); + if (test_bit(J_ABORTED, &journal->j_state)) + return; - if (!journal->j_errno) - journal->j_errno = errno; + if (!journal->j_errno) + journal->j_errno = errno; - __reiserfs_journal_abort_hard (sb); + __reiserfs_journal_abort_hard(sb); } -void -reiserfs_journal_abort (struct super_block *sb, int errno) +void reiserfs_journal_abort(struct super_block *sb, int errno) { - return __reiserfs_journal_abort_soft (sb, errno); + return __reiserfs_journal_abort_soft(sb, errno); } |