Commit 9345457f authored Jun 27, 2012 by Jan Schmidt

Btrfs: support root level changes in __resolve_indirect_ref



With the tree mod log, we can have a tree that's two levels high, but
btrfs_search_old_slot may still return a path with the tree root at level
one instead. __resolve_indirect_ref must care for this and accept parents in
a lower level than expected.

Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>

parent 8ca78f3e

fs/btrfs/backref.c

+8 −4

Original line number	Diff line number	Diff line
		@@ -301,11 +301,15 @@ static int __resolve_indirect_ref(struct btrfs_fs_info *fs_info,
		goto out;

		eb = path->nodes[level];
		if (!eb) {
		while (!eb) {
		if (!level) {
		WARN_ON(1);
		ret = 1;
		goto out;
		}
		level--;
		eb = path->nodes[level];
		}

		ret = add_all_parents(root, path, parents, level, &ref->key_for_search,
		time_seq, ref->wanted_disk_byte,