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btrfs: enhance btrfs_find_device_by_user_input() to check device path 

The operation of device replace and device delete follows same steps upto
some depth with in btrfs kernel, however they don't share codes. This
enhancement will help replace and delete to share codes.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Anand Jain 2016-02-13 10:01:37 +08:00 committed by David Sterba
parent 24fc572fe4
commit b3d1b1532f
2 changed files with 3 additions and 4 deletions
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4
fs/btrfs/dev-replace.c
View File

@ -320,10 +320,6 @@ int btrfs_dev_replace_start(struct btrfs_root *root,
return -EINVAL;
}
if ((args->start.srcdevid == 0 && args->start.srcdev_name[0] == '\0') ||
args->start.tgtdev_name[0] == '\0')
return -EINVAL;
/* the disk copy procedure reuses the scrub code */
mutex_lock(&fs_info->volume_mutex);
ret = btrfs_find_device_by_user_input(root, args->start.srcdevid,

3
fs/btrfs/volumes.c
View File

@ -2113,6 +2113,9 @@ int btrfs_find_device_by_user_input(struct btrfs_root *root, u64 srcdevid,
if (!*device)
ret = -ENOENT;
} else {
if (!srcdev_name || !srcdev_name[0])
return -EINVAL;
ret = btrfs_find_device_missing_or_by_path(root, srcdev_name,
device);
}