diff --git a/[refs] b/[refs]
index fb1e85a828e5..e58def4eea76 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 4575c9cceeca2f51c50536850e15e1dc5187f3d9
+refs/heads/master: ad5bd91ecee2b687071da00094564fd075f934ee
diff --git a/trunk/fs/btrfs/volumes.c b/trunk/fs/btrfs/volumes.c
index fe5b00986d22..4fc92cf813d8 100644
--- a/trunk/fs/btrfs/volumes.c
+++ b/trunk/fs/btrfs/volumes.c
@@ -746,6 +746,9 @@ int btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
 	else
 		min_free = calc_size;
 
+	/* we add 1MB because we never use the first 1MB of the device */
+	min_free += 1024 * 1024;
+
 	/* build a private list of devices we will allocate from */
 	while(index < num_stripes) {
 		device = list_entry(cur, struct btrfs_device, dev_list);