Btrfs: add leaf data casting helper

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

1 files changed, 2 insertions, 3 deletions

diff --git a/fs/btrfs/print-tree.c b/fs/btrfs/print-tree.c
index 64829b6b90f9..e769f36cf051 100644
--- a/fs/btrfs/print-tree.c
+++ b/fs/btrfs/print-tree.c
@@ -26,11 +26,10 @@ void btrfs_print_leaf(struct btrfs_leaf *l)
                         btrfs_item_size(item));
                 printf("\t\titem data %.*s\n", btrfs_item_size(item),
                         l->data + btrfs_item_offset(item));
-                ei = (struct btrfs_extent_item *)(l->data +
-                                                  btrfs_item_offset(item));
+                ei = btrfs_item_ptr(l, i, struct btrfs_extent_item);
                 printf("\t\textent data refs %u owner %Lu\n",
                         btrfs_extent_refs(ei), btrfs_extent_owner(ei));
-                ri = (struct btrfs_root_item *)ei;
+                ri = btrfs_item_ptr(l, i, struct btrfs_root_item);
                 printf("\t\troot data blocknr %Lu refs %u\n",
                         btrfs_root_blocknr(ri), btrfs_root_refs(ri));
                 fflush(stdout);