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Btrfs: fix wrong sync_writers decrement in btrfs_file_aio_write()

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If the checks at the beginning of btrfs_file_aio_write() fail, we needn't
decrease ->sync_writers, because we have not increased it. Fix it.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
This commit is contained in:
Miao Xie 2013-01-28 12:34:55 +00:00 committed by Josef Bacik
parent 222c81dc38
commit 0a3404dcff
1 changed files with 2 additions and 1 deletions
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3
fs/btrfs/file.c
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@ -1595,9 +1595,10 @@ static ssize_t btrfs_file_aio_write(struct kiocb *iocb,
if (err < 0 && num_written > 0) if (err < 0 && num_written > 0)
num_written = err; num_written = err;
} }
out:
if (sync) if (sync)
atomic_dec(&BTRFS_I(inode)->sync_writers); atomic_dec(&BTRFS_I(inode)->sync_writers);
out:
sb_end_write(inode->i_sb); sb_end_write(inode->i_sb);
current->backing_dev_info = NULL; current->backing_dev_info = NULL;
return num_written ? num_written : err; return num_written ? num_written : err;