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| author | Daeho Jeong <daehojeong@google.com> | 2020-09-08 11:44:10 +0900 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2020-09-11 11:11:26 -0700 |
| commit | c2759ebaf7e8f5510d0a77bd5003a20375ea6ed5 (patch) | |
| tree | 36a905fc9badb003d76fd36342f98ad33dfaf7ec /fs/f2fs/super.c | |
| parent | 32c0fec1aa85f1a9aebfd9445208f4223bcd96e8 (diff) | |
| download | linux-c2759ebaf7e8f5510d0a77bd5003a20375ea6ed5.tar.gz linux-c2759ebaf7e8f5510d0a77bd5003a20375ea6ed5.tar.bz2 linux-c2759ebaf7e8f5510d0a77bd5003a20375ea6ed5.zip | |
f2fs: change i_compr_blocks of inode to atomic value
writepages() can be concurrently invoked for the same file by different
threads such as a thread fsyncing the file and a kworker kernel thread.
So, changing i_compr_blocks without protection is racy and we need to
protect it by changing it with atomic type value. Plus, we don't need
a 64bit value for i_compr_blocks, so just we will use a atomic value,
not atomic64.
Signed-off-by: Daeho Jeong <daehojeong@google.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/super.c')
| -rw-r--r-- | fs/f2fs/super.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 5bb523bf32a6..729ec54294b3 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1026,6 +1026,7 @@ static struct inode *f2fs_alloc_inode(struct super_block *sb) /* Initialize f2fs-specific inode info */ atomic_set(&fi->dirty_pages, 0); + atomic_set(&fi->i_compr_blocks, 0); init_rwsem(&fi->i_sem); spin_lock_init(&fi->i_size_lock); INIT_LIST_HEAD(&fi->dirty_list); |