Merge remote-tracking branch 'lsk/v3.10/topic/arm64-cpuidle' into linux-linaro-lsk

[firefly-linux-kernel-4.4.55.git] / drivers / md / persistent-data / dm-btree-internal.h

diff --git a/drivers/md/persistent-data/dm-btree-internal.h b/drivers/md/persistent-data/dm-btree-internal.h
index 37d367bb9aa8976653d5bbc80b29d0dfbf037372..bf2b80d5c4707a64210b5e57deb785069dc7d921 100644 (file)
--- 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);