X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=drivers%2Fmd%2Fpersistent-data%2Fdm-btree-internal.h;h=bf2b80d5c4707a64210b5e57deb785069dc7d921;hb=4b31a34e0e0f8835fec2cca1f0d52275ac22b1ed;hp=37d367bb9aa8976653d5bbc80b29d0dfbf037372;hpb=3615db41c4b82896de450b6b4e3dab2420dcae51;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

diff --git a/drivers/md/persistent-data/dm-btree-internal.h b/drivers/md/persistent-data/dm-btree-internal.h
index 37d367b..bf2b80d 100644
--- a/drivers/md/persistent-data/dm-btree-internal.h
+++ b/drivers/md/persistent-data/dm-btree-internal.h
@@ -42,6 +42,12 @@ struct btree_node {
 } __packed;
 
 
+/*
+ * Locks a block using the btree node validator.
+ */
+int bn_read_lock(struct dm_btree_info *info, dm_block_t b,
+		 struct dm_block **result);
+
 void inc_children(struct dm_transaction_manager *tm, struct btree_node *n,
 		  struct dm_btree_value_type *vt);