1 files changed, 1 insertions, 1 deletions

diff --git a/fs/btrfs/dev-replace.c b/fs/btrfs/dev-replace.c
index 1e668fb7dd4c..cbb7dbfb3fff 100644
--- a/fs/btrfs/dev-replace.c
+++ b/fs/btrfs/dev-replace.c
@@ -614,7 +614,7 @@ static void btrfs_dev_replace_update_device_in_mapping_tree(
                 em = lookup_extent_mapping(em_tree, start, (u64)-1);
                 if (!em)
                         break;
-                map = (struct map_lookup *)em->bdev;
+                map = em->map_lookup;
                 for (i = 0; i < map->num_stripes; i++)
                         if (srcdev == map->stripes[i].dev)
                                 map->stripes[i].dev = tgtdev;