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btrfs: replace EINVAL with EOPNOTSUPP for dev_replace raid56 

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>
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
Gui Hecheng 2014-06-05 10:02:51 +08:00 committed by Chris Mason
parent 9391558411
commit c81d57679e
1 changed files with 1 additions and 1 deletions
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2
fs/btrfs/dev-replace.c
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@ -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) {