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btrfs: cleanup orphans while looking up default subvolume

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Orphans in the fs tree are cleaned up via open_ctree and subvolume
orphans are cleaned via btrfs_lookup_dentry -- except when a default
subvolume is in use.  The name for the default subvolume uses a manual
lookup that doesn't trigger orphan cleanup and needs to trigger it
manually as well. This doesn't apply to the remount case since the
subvolumes are cleaned up by walking the root radix tree.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Reviewed-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
Jeff Mahoney 2015-03-20 14:02:09 -04:00 committed by Chris Mason
parent d862095829
commit 727b9784b6
1 changed files with 9 additions and 0 deletions
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9
fs/btrfs/super.c
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@ -901,6 +901,15 @@ static struct dentry *get_default_root(struct super_block *sb,
if (IS_ERR(new_root))
return ERR_CAST(new_root);
if (!(sb->s_flags & MS_RDONLY)) {
int ret;
down_read(&fs_info->cleanup_work_sem);
ret = btrfs_orphan_cleanup(new_root);
up_read(&fs_info->cleanup_work_sem);
if (ret)
return ERR_PTR(ret);
}
dir_id = btrfs_root_dirid(&new_root->root_item);
setup_root:
location.objectid = dir_id;