[PATCH v3 1/4] ocfs2: return real error code in ocfs2_dio_wr_get_block

[Su Yue <glass.su@suse.com>]

ocfs2_dio_wr_get_block always returns -EIO in case of errors.
However, some programs expect right exit codes while doing dio.
For example, tools like fio treat -ENOSPC as expected code while
doing stress jobs. And quota tools expect -EDQUOT when disk quota
exceeds.

-EIO is too strong return code in the dio path.
The caller of ocfs2_dio_wr_get_block is __blockdev_direct_IO which is
widely used and it handles error codes well. I have checked functions
called by ocfs2_dio_wr_get_block and their return codes look good and
clear. So I think it's safe to let ocfs2_dio_wr_get_block return real
error code.

Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Signed-off-by: Su Yue <glass.su@suse.com>
---
 fs/ocfs2/aops.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c
index b82185075de7..f0467d3b3c88 100644
--- a/fs/ocfs2/aops.c
+++ b/fs/ocfs2/aops.c
@@ -2283,8 +2283,6 @@ static int ocfs2_dio_wr_get_block(struct inode *inode, sector_t iblock,
 	ocfs2_inode_unlock(inode, 1);
 	brelse(di_bh);
 out:
-	if (ret < 0)
-		ret = -EIO;
 	return ret;
 }
 
-- 
2.44.0