diff --git a/[refs] b/[refs]
index 8ef138241e0b..0ea0c1fb7f0b 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 3f6bcfbd4149875662773eb40a62294cddf215d4
+refs/heads/master: 071401258a580dec2a3e0c2700b7e76f3ed43320
diff --git a/trunk/fs/btrfs/free-space-cache.c b/trunk/fs/btrfs/free-space-cache.c
index 557502ca1a2a..efdd1d3f441c 100644
--- a/trunk/fs/btrfs/free-space-cache.c
+++ b/trunk/fs/btrfs/free-space-cache.c
@@ -307,7 +307,6 @@ static void io_ctl_unmap_page(struct io_ctl *io_ctl)
 
 static void io_ctl_map_page(struct io_ctl *io_ctl, int clear)
 {
-	WARN_ON(io_ctl->cur);
 	BUG_ON(io_ctl->index >= io_ctl->num_pages);
 	io_ctl->page = io_ctl->pages[io_ctl->index++];
 	io_ctl->cur = kmap(io_ctl->page);