Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi...

[platform/adaptation/renesas_rcar/renesas_kernel.git] / drivers / md / persistent-data / dm-btree-spine.c

diff --git a/drivers/md/persistent-data/dm-btree-spine.c b/drivers/md/persistent-data/dm-btree-spine.c
index f199a0c..cf9fd67 100644 (file)
--- a/drivers/md/persistent-data/dm-btree-spine.c
+++ b/drivers/md/persistent-data/dm-btree-spine.c
@@ -164,6 +164,13 @@ int ro_step(struct ro_spine *s, dm_block_t new_child)
        return r;
 }
 
+void ro_pop(struct ro_spine *s)
+{
+       BUG_ON(!s->count);
+       --s->count;
+       unlock_block(s->info, s->nodes[s->count]);
+}
+
 struct btree_node *ro_node(struct ro_spine *s)
 {
        struct dm_block *block;