Change btrfs_map_block to return a structure with mappings for all stripes

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 3c7891cf0d7..c92c6b0ee58 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -2025,8 +2025,10 @@ again:
                                          root->root_key.objectid,
                                          root_gen, disk_key.objectid, 0,
                                          l->start, 0);
-        if (IS_ERR(right))
+        if (IS_ERR(right)) {
+                BUG_ON(1);
                 return PTR_ERR(right);
+        }
 
         memset_extent_buffer(right, 0, 0, sizeof(struct btrfs_header));
         btrfs_set_header_bytenr(right, right->start);