Btrfs: add leaf data casting helper
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/print-tree.c b/fs/btrfs/print-tree.c
index 64829b6..e769f36 100644
--- a/fs/btrfs/print-tree.c
+++ b/fs/btrfs/print-tree.c
@@ -26,11 +26,10 @@
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);