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-rw-r--r--fs/ufs/inode.c267
1 files changed, 150 insertions, 117 deletions
diff --git a/fs/ufs/inode.c b/fs/ufs/inode.c
index 3c3f62ce2ad9..f2dbdf5a8769 100644
--- a/fs/ufs/inode.c
+++ b/fs/ufs/inode.c
@@ -41,14 +41,7 @@
#include "swab.h"
#include "util.h"
-#undef UFS_INODE_DEBUG
-#undef UFS_INODE_DEBUG_MORE
-
-#ifdef UFS_INODE_DEBUG
-#define UFSD(x) printk("(%s, %d), %s: ", __FILE__, __LINE__, __FUNCTION__); printk x;
-#else
-#define UFSD(x)
-#endif
+static u64 ufs_frag_map(struct inode *inode, sector_t frag);
static int ufs_block_to_path(struct inode *inode, sector_t i_block, sector_t offsets[4])
{
@@ -61,7 +54,7 @@ static int ufs_block_to_path(struct inode *inode, sector_t i_block, sector_t off
int n = 0;
- UFSD(("ptrs=uspi->s_apb = %d,double_blocks=%ld \n",ptrs,double_blocks));
+ UFSD("ptrs=uspi->s_apb = %d,double_blocks=%ld \n",ptrs,double_blocks);
if (i_block < 0) {
ufs_warning(inode->i_sb, "ufs_block_to_path", "block < 0");
} else if (i_block < direct_blocks) {
@@ -89,7 +82,7 @@ static int ufs_block_to_path(struct inode *inode, sector_t i_block, sector_t off
* the begining of the filesystem.
*/
-u64 ufs_frag_map(struct inode *inode, sector_t frag)
+static u64 ufs_frag_map(struct inode *inode, sector_t frag)
{
struct ufs_inode_info *ufsi = UFS_I(inode);
struct super_block *sb = inode->i_sb;
@@ -104,8 +97,8 @@ u64 ufs_frag_map(struct inode *inode, sector_t frag)
unsigned flags = UFS_SB(sb)->s_flags;
u64 temp = 0L;
- UFSD((": frag = %llu depth = %d\n", (unsigned long long)frag, depth));
- UFSD((": uspi->s_fpbshift = %d ,uspi->s_apbmask = %x, mask=%llx\n",uspi->s_fpbshift,uspi->s_apbmask,mask));
+ UFSD(": frag = %llu depth = %d\n", (unsigned long long)frag, depth);
+ UFSD(": uspi->s_fpbshift = %d ,uspi->s_apbmask = %x, mask=%llx\n",uspi->s_fpbshift,uspi->s_apbmask,mask);
if (depth == 0)
return 0;
@@ -161,26 +154,64 @@ out:
return ret;
}
-static struct buffer_head * ufs_inode_getfrag (struct inode *inode,
- unsigned int fragment, unsigned int new_fragment,
- unsigned int required, int *err, int metadata, long *phys, int *new)
+static void ufs_clear_frag(struct inode *inode, struct buffer_head *bh)
+{
+ lock_buffer(bh);
+ memset(bh->b_data, 0, inode->i_sb->s_blocksize);
+ set_buffer_uptodate(bh);
+ mark_buffer_dirty(bh);
+ unlock_buffer(bh);
+ if (IS_SYNC(inode))
+ sync_dirty_buffer(bh);
+}
+
+static struct buffer_head *
+ufs_clear_frags(struct inode *inode, sector_t beg,
+ unsigned int n)
+{
+ struct buffer_head *res, *bh;
+ sector_t end = beg + n;
+
+ res = sb_getblk(inode->i_sb, beg);
+ ufs_clear_frag(inode, res);
+ for (++beg; beg < end; ++beg) {
+ bh = sb_getblk(inode->i_sb, beg);
+ ufs_clear_frag(inode, bh);
+ brelse(bh);
+ }
+ return res;
+}
+
+/**
+ * ufs_inode_getfrag() - allocate new fragment(s)
+ * @inode - pointer to inode
+ * @fragment - number of `fragment' which hold pointer
+ * to new allocated fragment(s)
+ * @new_fragment - number of new allocated fragment(s)
+ * @required - how many fragment(s) we require
+ * @err - we set it if something wrong
+ * @phys - pointer to where we save physical number of new allocated fragments,
+ * NULL if we allocate not data(indirect blocks for example).
+ * @new - we set it if we allocate new block
+ * @locked_page - for ufs_new_fragments()
+ */
+static struct buffer_head *
+ufs_inode_getfrag(struct inode *inode, unsigned int fragment,
+ sector_t new_fragment, unsigned int required, int *err,
+ long *phys, int *new, struct page *locked_page)
{
struct ufs_inode_info *ufsi = UFS_I(inode);
- struct super_block * sb;
- struct ufs_sb_private_info * uspi;
+ struct super_block *sb = inode->i_sb;
+ struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
struct buffer_head * result;
unsigned block, blockoff, lastfrag, lastblock, lastblockoff;
unsigned tmp, goal;
__fs32 * p, * p2;
- unsigned flags = 0;
- UFSD(("ENTER, ino %lu, fragment %u, new_fragment %u, required %u\n",
- inode->i_ino, fragment, new_fragment, required))
+ UFSD("ENTER, ino %lu, fragment %u, new_fragment %llu, required %u, "
+ "metadata %d\n", inode->i_ino, fragment,
+ (unsigned long long)new_fragment, required, !phys);
- sb = inode->i_sb;
- uspi = UFS_SB(sb)->s_uspi;
-
- flags = UFS_SB(sb)->s_flags;
/* TODO : to be done for write support
if ( (flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
goto ufs2;
@@ -195,16 +226,16 @@ repeat:
tmp = fs32_to_cpu(sb, *p);
lastfrag = ufsi->i_lastfrag;
if (tmp && fragment < lastfrag) {
- if (metadata) {
+ if (!phys) {
result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
if (tmp == fs32_to_cpu(sb, *p)) {
- UFSD(("EXIT, result %u\n", tmp + blockoff))
+ UFSD("EXIT, result %u\n", tmp + blockoff);
return result;
}
brelse (result);
goto repeat;
} else {
- *phys = tmp;
+ *phys = tmp + blockoff;
return NULL;
}
}
@@ -221,7 +252,8 @@ repeat:
if (lastblockoff) {
p2 = ufsi->i_u1.i_data + lastblock;
tmp = ufs_new_fragments (inode, p2, lastfrag,
- fs32_to_cpu(sb, *p2), uspi->s_fpb - lastblockoff, err);
+ fs32_to_cpu(sb, *p2), uspi->s_fpb - lastblockoff,
+ err, locked_page);
if (!tmp) {
if (lastfrag != ufsi->i_lastfrag)
goto repeat;
@@ -233,14 +265,16 @@ repeat:
}
goal = fs32_to_cpu(sb, ufsi->i_u1.i_data[lastblock]) + uspi->s_fpb;
tmp = ufs_new_fragments (inode, p, fragment - blockoff,
- goal, required + blockoff, err);
+ goal, required + blockoff,
+ err, locked_page);
}
/*
* We will extend last allocated block
*/
else if (lastblock == block) {
- tmp = ufs_new_fragments (inode, p, fragment - (blockoff - lastblockoff),
- fs32_to_cpu(sb, *p), required + (blockoff - lastblockoff), err);
+ tmp = ufs_new_fragments(inode, p, fragment - (blockoff - lastblockoff),
+ fs32_to_cpu(sb, *p), required + (blockoff - lastblockoff),
+ err, locked_page);
}
/*
* We will allocate new block before last allocated block
@@ -248,8 +282,8 @@ repeat:
else /* (lastblock > block) */ {
if (lastblock && (tmp = fs32_to_cpu(sb, ufsi->i_u1.i_data[lastblock-1])))
goal = tmp + uspi->s_fpb;
- tmp = ufs_new_fragments (inode, p, fragment - blockoff,
- goal, uspi->s_fpb, err);
+ tmp = ufs_new_fragments(inode, p, fragment - blockoff,
+ goal, uspi->s_fpb, err, locked_page);
}
if (!tmp) {
if ((!blockoff && *p) ||
@@ -259,14 +293,10 @@ repeat:
return NULL;
}
- /* The nullification of framgents done in ufs/balloc.c is
- * something I don't have the stomache to move into here right
- * now. -DaveM
- */
- if (metadata) {
- result = sb_getblk(inode->i_sb, tmp + blockoff);
+ if (!phys) {
+ result = ufs_clear_frags(inode, tmp + blockoff, required);
} else {
- *phys = tmp;
+ *phys = tmp + blockoff;
result = NULL;
*err = 0;
*new = 1;
@@ -276,7 +306,7 @@ repeat:
if (IS_SYNC(inode))
ufs_sync_inode (inode);
mark_inode_dirty(inode);
- UFSD(("EXIT, result %u\n", tmp + blockoff))
+ UFSD("EXIT, result %u\n", tmp + blockoff);
return result;
/* This part : To be implemented ....
@@ -295,22 +325,35 @@ repeat2:
*/
}
-static struct buffer_head * ufs_block_getfrag (struct inode *inode,
- struct buffer_head *bh, unsigned int fragment, unsigned int new_fragment,
- unsigned int blocksize, int * err, int metadata, long *phys, int *new)
+/**
+ * ufs_inode_getblock() - allocate new block
+ * @inode - pointer to inode
+ * @bh - pointer to block which hold "pointer" to new allocated block
+ * @fragment - number of `fragment' which hold pointer
+ * to new allocated block
+ * @new_fragment - number of new allocated fragment
+ * (block will hold this fragment and also uspi->s_fpb-1)
+ * @err - see ufs_inode_getfrag()
+ * @phys - see ufs_inode_getfrag()
+ * @new - see ufs_inode_getfrag()
+ * @locked_page - see ufs_inode_getfrag()
+ */
+static struct buffer_head *
+ufs_inode_getblock(struct inode *inode, struct buffer_head *bh,
+ unsigned int fragment, sector_t new_fragment, int *err,
+ long *phys, int *new, struct page *locked_page)
{
- struct super_block * sb;
- struct ufs_sb_private_info * uspi;
+ struct super_block *sb = inode->i_sb;
+ struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
struct buffer_head * result;
unsigned tmp, goal, block, blockoff;
__fs32 * p;
- sb = inode->i_sb;
- uspi = UFS_SB(sb)->s_uspi;
block = ufs_fragstoblks (fragment);
blockoff = ufs_fragnum (fragment);
- UFSD(("ENTER, ino %lu, fragment %u, new_fragment %u\n", inode->i_ino, fragment, new_fragment))
+ UFSD("ENTER, ino %lu, fragment %u, new_fragment %llu, metadata %d\n",
+ inode->i_ino, fragment, (unsigned long long)new_fragment, !phys);
result = NULL;
if (!bh)
@@ -326,14 +369,14 @@ static struct buffer_head * ufs_block_getfrag (struct inode *inode,
repeat:
tmp = fs32_to_cpu(sb, *p);
if (tmp) {
- if (metadata) {
+ if (!phys) {
result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
if (tmp == fs32_to_cpu(sb, *p))
goto out;
brelse (result);
goto repeat;
} else {
- *phys = tmp;
+ *phys = tmp + blockoff;
goto out;
}
}
@@ -342,21 +385,19 @@ repeat:
goal = tmp + uspi->s_fpb;
else
goal = bh->b_blocknr + uspi->s_fpb;
- tmp = ufs_new_fragments (inode, p, ufs_blknum(new_fragment), goal, uspi->s_fpb, err);
+ tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment), goal,
+ uspi->s_fpb, err, locked_page);
if (!tmp) {
if (fs32_to_cpu(sb, *p))
goto repeat;
goto out;
}
- /* The nullification of framgents done in ufs/balloc.c is
- * something I don't have the stomache to move into here right
- * now. -DaveM
- */
- if (metadata) {
- result = sb_getblk(sb, tmp + blockoff);
+
+ if (!phys) {
+ result = ufs_clear_frags(inode, tmp + blockoff, uspi->s_fpb);
} else {
- *phys = tmp;
+ *phys = tmp + blockoff;
*new = 1;
}
@@ -365,18 +406,19 @@ repeat:
sync_dirty_buffer(bh);
inode->i_ctime = CURRENT_TIME_SEC;
mark_inode_dirty(inode);
- UFSD(("result %u\n", tmp + blockoff));
+ UFSD("result %u\n", tmp + blockoff);
out:
brelse (bh);
- UFSD(("EXIT\n"));
+ UFSD("EXIT\n");
return result;
}
-/*
- * This function gets the block which contains the fragment.
+/**
+ * ufs_getfrag_bloc() - `get_block_t' function, interface between UFS and
+ * readpage, writepage and so on
*/
-int ufs_getfrag_block (struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create)
+int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create)
{
struct super_block * sb = inode->i_sb;
struct ufs_sb_private_info * uspi = UFS_SB(sb)->s_uspi;
@@ -387,7 +429,7 @@ int ufs_getfrag_block (struct inode *inode, sector_t fragment, struct buffer_hea
if (!create) {
phys64 = ufs_frag_map(inode, fragment);
- UFSD(("phys64 = %llu \n",phys64));
+ UFSD("phys64 = %llu \n",phys64);
if (phys64)
map_bh(bh_result, sb, phys64);
return 0;
@@ -402,7 +444,7 @@ int ufs_getfrag_block (struct inode *inode, sector_t fragment, struct buffer_hea
lock_kernel();
- UFSD(("ENTER, ino %lu, fragment %llu\n", inode->i_ino, (unsigned long long)fragment))
+ UFSD("ENTER, ino %lu, fragment %llu\n", inode->i_ino, (unsigned long long)fragment);
if (fragment < 0)
goto abort_negative;
if (fragment >
@@ -418,15 +460,15 @@ int ufs_getfrag_block (struct inode *inode, sector_t fragment, struct buffer_hea
* it much more readable:
*/
#define GET_INODE_DATABLOCK(x) \
- ufs_inode_getfrag(inode, x, fragment, 1, &err, 0, &phys, &new)
+ ufs_inode_getfrag(inode, x, fragment, 1, &err, &phys, &new, bh_result->b_page)
#define GET_INODE_PTR(x) \
- ufs_inode_getfrag(inode, x, fragment, uspi->s_fpb, &err, 1, NULL, NULL)
+ ufs_inode_getfrag(inode, x, fragment, uspi->s_fpb, &err, NULL, NULL, bh_result->b_page)
#define GET_INDIRECT_DATABLOCK(x) \
- ufs_block_getfrag(inode, bh, x, fragment, sb->s_blocksize, \
- &err, 0, &phys, &new);
+ ufs_inode_getblock(inode, bh, x, fragment, \
+ &err, &phys, &new, bh_result->b_page);
#define GET_INDIRECT_PTR(x) \
- ufs_block_getfrag(inode, bh, x, fragment, sb->s_blocksize, \
- &err, 1, NULL, NULL);
+ ufs_inode_getblock(inode, bh, x, fragment, \
+ &err, NULL, NULL, bh_result->b_page);
if (ptr < UFS_NDIR_FRAGMENT) {
bh = GET_INODE_DATABLOCK(ptr);
@@ -474,8 +516,9 @@ abort_too_big:
goto abort;
}
-struct buffer_head *ufs_getfrag(struct inode *inode, unsigned int fragment,
- int create, int *err)
+static struct buffer_head *ufs_getfrag(struct inode *inode,
+ unsigned int fragment,
+ int create, int *err)
{
struct buffer_head dummy;
int error;
@@ -502,7 +545,7 @@ struct buffer_head * ufs_bread (struct inode * inode, unsigned fragment,
{
struct buffer_head * bh;
- UFSD(("ENTER, ino %lu, fragment %u\n", inode->i_ino, fragment))
+ UFSD("ENTER, ino %lu, fragment %u\n", inode->i_ino, fragment);
bh = ufs_getfrag (inode, fragment, create, err);
if (!bh || buffer_uptodate(bh))
return bh;
@@ -540,6 +583,28 @@ struct address_space_operations ufs_aops = {
.bmap = ufs_bmap
};
+static void ufs_set_inode_ops(struct inode *inode)
+{
+ if (S_ISREG(inode->i_mode)) {
+ inode->i_op = &ufs_file_inode_operations;
+ inode->i_fop = &ufs_file_operations;
+ inode->i_mapping->a_ops = &ufs_aops;
+ } else if (S_ISDIR(inode->i_mode)) {
+ inode->i_op = &ufs_dir_inode_operations;
+ inode->i_fop = &ufs_dir_operations;
+ inode->i_mapping->a_ops = &ufs_aops;
+ } else if (S_ISLNK(inode->i_mode)) {
+ if (!inode->i_blocks)
+ inode->i_op = &ufs_fast_symlink_inode_operations;
+ else {
+ inode->i_op = &page_symlink_inode_operations;
+ inode->i_mapping->a_ops = &ufs_aops;
+ }
+ } else
+ init_special_inode(inode, inode->i_mode,
+ ufs_get_inode_dev(inode->i_sb, UFS_I(inode)));
+}
+
void ufs_read_inode (struct inode * inode)
{
struct ufs_inode_info *ufsi = UFS_I(inode);
@@ -552,7 +617,7 @@ void ufs_read_inode (struct inode * inode)
unsigned i;
unsigned flags;
- UFSD(("ENTER, ino %lu\n", inode->i_ino))
+ UFSD("ENTER, ino %lu\n", inode->i_ino);
sb = inode->i_sb;
uspi = UFS_SB(sb)->s_uspi;
@@ -603,38 +668,22 @@ void ufs_read_inode (struct inode * inode)
ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow);
ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag);
ufsi->i_lastfrag = (inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift;
+ ufsi->i_dir_start_lookup = 0;
if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) {
for (i = 0; i < (UFS_NDADDR + UFS_NINDIR); i++)
ufsi->i_u1.i_data[i] = ufs_inode->ui_u2.ui_addr.ui_db[i];
- }
- else {
+ } else {
for (i = 0; i < (UFS_NDADDR + UFS_NINDIR) * 4; i++)
ufsi->i_u1.i_symlink[i] = ufs_inode->ui_u2.ui_symlink[i];
}
ufsi->i_osync = 0;
- if (S_ISREG(inode->i_mode)) {
- inode->i_op = &ufs_file_inode_operations;
- inode->i_fop = &ufs_file_operations;
- inode->i_mapping->a_ops = &ufs_aops;
- } else if (S_ISDIR(inode->i_mode)) {
- inode->i_op = &ufs_dir_inode_operations;
- inode->i_fop = &ufs_dir_operations;
- } else if (S_ISLNK(inode->i_mode)) {
- if (!inode->i_blocks)
- inode->i_op = &ufs_fast_symlink_inode_operations;
- else {
- inode->i_op = &page_symlink_inode_operations;
- inode->i_mapping->a_ops = &ufs_aops;
- }
- } else
- init_special_inode(inode, inode->i_mode,
- ufs_get_inode_dev(sb, ufsi));
+ ufs_set_inode_ops(inode);
brelse (bh);
- UFSD(("EXIT\n"))
+ UFSD("EXIT\n");
return;
bad_inode:
@@ -642,7 +691,7 @@ bad_inode:
return;
ufs2_inode :
- UFSD(("Reading ufs2 inode, ino %lu\n", inode->i_ino))
+ UFSD("Reading ufs2 inode, ino %lu\n", inode->i_ino);
ufs2_inode = (struct ufs2_inode *)(bh->b_data + sizeof(struct ufs2_inode) * ufs_inotofsbo(inode->i_ino));
@@ -690,27 +739,11 @@ ufs2_inode :
}
ufsi->i_osync = 0;
- if (S_ISREG(inode->i_mode)) {
- inode->i_op = &ufs_file_inode_operations;
- inode->i_fop = &ufs_file_operations;
- inode->i_mapping->a_ops = &ufs_aops;
- } else if (S_ISDIR(inode->i_mode)) {
- inode->i_op = &ufs_dir_inode_operations;
- inode->i_fop = &ufs_dir_operations;
- } else if (S_ISLNK(inode->i_mode)) {
- if (!inode->i_blocks)
- inode->i_op = &ufs_fast_symlink_inode_operations;
- else {
- inode->i_op = &page_symlink_inode_operations;
- inode->i_mapping->a_ops = &ufs_aops;
- }
- } else /* TODO : here ...*/
- init_special_inode(inode, inode->i_mode,
- ufs_get_inode_dev(sb, ufsi));
+ ufs_set_inode_ops(inode);
brelse(bh);
- UFSD(("EXIT\n"))
+ UFSD("EXIT\n");
return;
}
@@ -724,7 +757,7 @@ static int ufs_update_inode(struct inode * inode, int do_sync)
unsigned i;
unsigned flags;
- UFSD(("ENTER, ino %lu\n", inode->i_ino))
+ UFSD("ENTER, ino %lu\n", inode->i_ino);
sb = inode->i_sb;
uspi = UFS_SB(sb)->s_uspi;
@@ -785,7 +818,7 @@ static int ufs_update_inode(struct inode * inode, int do_sync)
sync_dirty_buffer(bh);
brelse (bh);
- UFSD(("EXIT\n"))
+ UFSD("EXIT\n");
return 0;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-26 18:18:27 +0100