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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-12-03 00:11:32 +0100 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-12-05 20:43:59 +0100 |
| commit | 204706c7accfabb67b97eef9f9a28361b6201199 (patch) | |
| tree | eeb5defa3ec3abd03c4eceb2fde04315a406dc09 /fs/f2fs | |
| parent | f2fs: return AOP_WRITEPAGE_ACTIVATE for writepage (diff) | |
| download | linux-204706c7accfabb67b97eef9f9a28361b6201199.tar.xz linux-204706c7accfabb67b97eef9f9a28361b6201199.zip | |
Revert "f2fs: use percpu_counter for # of dirty pages in inode"
This reverts commit 1beba1b3a953107c3ff5448ab4e4297db4619c76.
The perpcu_counter doesn't provide atomicity in single core and consume more
DRAM. That incurs fs_mark test failure due to ENOMEM.
Cc: stable@vger.kernel.org # 4.7+
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs')
| -rw-r--r-- | fs/f2fs/f2fs.h | 10 | ||||
| -rw-r--r-- | fs/f2fs/file.c | 2 | ||||
| -rw-r--r-- | fs/f2fs/super.c | 7 |
3 files changed, 7 insertions, 12 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 8a659493796b..35dbab157ec3 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -431,7 +431,7 @@ struct f2fs_inode_info { /* Use below internally in f2fs*/ unsigned long flags; /* use to pass per-file flags */ struct rw_semaphore i_sem; /* protect fi info */ - struct percpu_counter dirty_pages; /* # of dirty pages */ + atomic_t dirty_pages; /* # of dirty pages */ f2fs_hash_t chash; /* hash value of given file name */ unsigned int clevel; /* maximum level of given file name */ nid_t i_xattr_nid; /* node id that contains xattrs */ @@ -1269,7 +1269,7 @@ static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type) static inline void inode_inc_dirty_pages(struct inode *inode) { - percpu_counter_inc(&F2FS_I(inode)->dirty_pages); + atomic_inc(&F2FS_I(inode)->dirty_pages); inc_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ? F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA); } @@ -1285,7 +1285,7 @@ static inline void inode_dec_dirty_pages(struct inode *inode) !S_ISLNK(inode->i_mode)) return; - percpu_counter_dec(&F2FS_I(inode)->dirty_pages); + atomic_dec(&F2FS_I(inode)->dirty_pages); dec_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ? F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA); } @@ -1295,9 +1295,9 @@ static inline s64 get_pages(struct f2fs_sb_info *sbi, int count_type) return atomic_read(&sbi->nr_pages[count_type]); } -static inline s64 get_dirty_pages(struct inode *inode) +static inline int get_dirty_pages(struct inode *inode) { - return percpu_counter_sum_positive(&F2FS_I(inode)->dirty_pages); + return atomic_read(&F2FS_I(inode)->dirty_pages); } static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type) diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 9053a9c5a47e..4c87261c1cd2 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -1533,7 +1533,7 @@ static int f2fs_ioc_start_atomic_write(struct file *filp) goto out; f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING, - "Unexpected flush for atomic writes: ino=%lu, npages=%lld", + "Unexpected flush for atomic writes: ino=%lu, npages=%u", inode->i_ino, get_dirty_pages(inode)); ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX); if (ret) diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 2852a0b34d64..7591d2d7b612 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -571,13 +571,9 @@ static struct inode *f2fs_alloc_inode(struct super_block *sb) init_once((void *) fi); - if (percpu_counter_init(&fi->dirty_pages, 0, GFP_NOFS)) { - kmem_cache_free(f2fs_inode_cachep, fi); - return NULL; - } - /* Initialize f2fs-specific inode info */ fi->vfs_inode.i_version = 1; + atomic_set(&fi->dirty_pages, 0); fi->i_current_depth = 1; fi->i_advise = 0; init_rwsem(&fi->i_sem); @@ -703,7 +699,6 @@ static void f2fs_i_callback(struct rcu_head *head) static void f2fs_destroy_inode(struct inode *inode) { - percpu_counter_destroy(&F2FS_I(inode)->dirty_pages); call_rcu(&inode->i_rcu, f2fs_i_callback); } |