commit 4beb1b8b75a86373f6020103ab840448d14c8880
author Chris Mason <chris.mason@oracle.com> Wed Mar 14 10:31:29 2007 -0400
committer David Woodhouse <dwmw2@hera.kernel.org> Wed Mar 14 10:31:29 2007 -0400
tree 944e80ccd6764afd16b4e31d5595d2decf36dabc
parent 710874947aa0f81c3b348b052e81cb9075113c49

Btrfs: add leaf data casting helper

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

fs/btrfs/extent-tree.c

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 7f156d9..3767744 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -41,9 +41,7 @@
 		BUG();
 	BUG_ON(ret != 0);
 	l = &path.nodes[0]->leaf;
-	item = (struct btrfs_extent_item *)(l->data +
-					    btrfs_item_offset(l->items +
-							      path.slots[0]));
+	item = btrfs_item_ptr(l, path.slots[0], struct btrfs_extent_item);
 	refs = btrfs_extent_refs(item);
 	btrfs_set_extent_refs(item, refs + 1);
 
@@ -69,9 +67,7 @@
 	if (ret != 0)
 		BUG();
 	l = &path.nodes[0]->leaf;
-	item = (struct btrfs_extent_item *)(l->data +
-				      btrfs_item_offset(l->items +
-							path.slots[0]));
+	item = btrfs_item_ptr(l, path.slots[0], struct btrfs_extent_item);
 	*refs = btrfs_extent_refs(item);
 	btrfs_release_path(root->extent_root, &path);
 	return 0;