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>
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@ -313,7 +313,7 @@ int btrfs_dev_replace_start(struct btrfs_root *root,
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if (btrfs_fs_incompat(fs_info, RAID56)) {
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btrfs_warn(fs_info, "dev_replace cannot yet handle RAID5/RAID6");
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return -EINVAL;
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return -EOPNOTSUPP;
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}
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switch (args->start.cont_reading_from_srcdev_mode) {
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