Btrfs: fix wrong sync_writers decrement in btrfs_file_aio_write()

PATCH In review Miao Xie 1 participant 1 message Jan 28, 2013 Btrfs file system

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Miao Xie

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2013-01-28 12:34 UTC #0 lore raw

PATCH 1/3 Btrfs: fix wrong sync_writers decrement in btrfs_file_aio_write()

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 <[email protected]>

---
 fs/btrfs/file.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

fs/btrfs/file.c +2 -1

index 20452c1..370ed5b 100644
@@ -1595,9 +1595,10 @@ static ssize_t btrfs_file_aio_write(struct kiocb *iocb,
 		if (err < 0 && num_written > 0)
 			num_written = err;
 	}
-out:
+
 	if (sync)
 		atomic_dec(&BTRFS_I(inode)->sync_writers);
+out:
 	sb_end_write(inode->i_sb);
 	current->backing_dev_info = NULL;
 	return num_written ? num_written : err;

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