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Btrfs-progs: fix to make list specified directory's subvolumes work 

Steps to reproduce:
 # mkfs.btrfs -f /dev/sda8
 # mount /dev/sda8 /mnt
 # mkdir /mnt/subvolumes
 # btrfs sub create /mnt/subvolumes/subv1
 # btrfs sub create /mnt/subvolumes/subv1/subv1.1
 # btrfs sub list -o /mnt/subvolumes/subv1   <----we did not list anything

The problem is that we don't set @top_id right, fix it.

Reported-by: Alex <alex@bpmit.com>
Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
Wang Shilong 2014-01-09 20:42:12 +08:00 committed by Chris Mason
parent 62d02453e4
commit 4f5ebb3ef5
1 changed files with 4 additions and 9 deletions
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13
btrfs-list.c
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@ -578,23 +578,18 @@ static int resolve_root(struct root_lookup *rl, struct root_info *ri,
full_path = strdup(found->path);
len = add_len;
}
if (!ri->top_id)
ri->top_id = found->ref_tree;
next = found->ref_tree;
if (next == top_id) {
ri->top_id = top_id;
if (next == top_id)
break;
}
/*
* if the ref_tree = BTRFS_FS_TREE_OBJECTID,
* we are at the top
*/
if (next == BTRFS_FS_TREE_OBJECTID) {
ri->top_id = next;
if (next == BTRFS_FS_TREE_OBJECTID)
break;
}
/*
* if the ref_tree wasn't in our tree of roots, the
* subvolume was deleted.