commit c5aa4a3157b55bdca18dd2a9d9f43314470b6d32
author Slava Pestov <sp@daterainc.com> Mon Apr 21 18:23:12 2014 -0700
committer Kent Overstreet <kmo@daterainc.com> Mon Aug 04 15:23:03 2014 -0700
tree 561c55e24a7bc8d646ef2af5bb039b7b815bb676
parent a664d0f05a2ec02c8f042db536d84d15d6e19e81

bcache: wait for buckets when allocating new btree root

Tested:
- sometimes bcache_tier test would hang on startup with a failure
  to allocate the btree root -- no longer seeing this

Signed-off-by: Kent Overstreet <kmo@daterainc.com>

drivers/md/bcache/btree.h

diff --git a/drivers/md/bcache/btree.h b/drivers/md/bcache/btree.h
index 91dfa5e..0044182 100644
--- a/drivers/md/bcache/btree.h
+++ b/drivers/md/bcache/btree.h
@@ -242,7 +242,8 @@
 void bch_btree_node_write(struct btree *, struct closure *);
 
 void bch_btree_set_root(struct btree *);
-struct btree *bch_btree_node_alloc(struct cache_set *, struct btree_op *, int);
+struct btree *__bch_btree_node_alloc(struct cache_set *, struct btree_op *,
+				     int, bool);
 struct btree *bch_btree_node_get(struct cache_set *, struct btree_op *,
 				 struct bkey *, int, bool);