btrfs: replace EINVAL with EOPNOTSUPP for dev_replace raid56
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Message ID 1401933772-23447-1-git-send-email-guihc.fnst@cn.fujitsu.com
State Accepted
Headers show

Commit Message

Gui Hecheng June 5, 2014, 2:02 a.m. UTC
To return EOPNOTSUPP is more user friendly than to return EINVAL,
and then user-space tool will show that the dev_replace operation
for raid56 is not currently supported rather than showing that
there is an invalid argument.

Signed-off-by: Gui Hecheng <guihc.fnst@cn.fujitsu.com>
---
 fs/btrfs/dev-replace.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Patch
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diff --git a/fs/btrfs/dev-replace.c b/fs/btrfs/dev-replace.c
index 9f22905..2af6e66 100644
--- a/fs/btrfs/dev-replace.c
+++ b/fs/btrfs/dev-replace.c
@@ -313,7 +313,7 @@  int btrfs_dev_replace_start(struct btrfs_root *root,
 
 	if (btrfs_fs_incompat(fs_info, RAID56)) {
 		btrfs_warn(fs_info, "dev_replace cannot yet handle RAID5/RAID6");
-		return -EINVAL;
+		return -EOPNOTSUPP;
 	}
 
 	switch (args->start.cont_reading_from_srcdev_mode) {