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Commit 4dae077a authored by Jeff Mahoney's avatar Jeff Mahoney Committed by David Sterba
Browse files

btrfs: backref, add unode_aux_to_inode_list helper 



Replacing the double cast and ternary conditional with a helper makes
the code easier on the eyes.

Signed-off-by: default avatarJeff Mahoney <jeffm@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 73980bec

fs/btrfs/backref.c

+11 −5
Original line number Diff line number Diff line
@@ -682,6 +682,14 @@ static int __resolve_indirect_ref(struct btrfs_fs_info *fs_info, 
	return ret;

}



static struct extent_inode_elem *

unode_aux_to_inode_list(struct ulist_node *node)

{

	if (!node)

		return NULL;

	return (struct extent_inode_elem *)(uintptr_t)node->aux;

}



/*

 * resolve all indirect backrefs from the list

 */
@@ -736,8 +744,7 @@ static int __resolve_indirect_refs(struct btrfs_fs_info *fs_info, 
		ULIST_ITER_INIT(&uiter);

		node = ulist_next(parents, &uiter);

		ref->parent = node ? node->val : 0;

		ref->inode_list = node ?

			(struct extent_inode_elem *)(uintptr_t)node->aux : NULL;

		ref->inode_list = unode_aux_to_inode_list(node);



		/* additional parents require new refs being added here */

		while ((node = ulist_next(parents, &uiter))) {
@@ -749,8 +756,7 @@ static int __resolve_indirect_refs(struct btrfs_fs_info *fs_info, 
			}

			memcpy(new_ref, ref, sizeof(*ref));

			new_ref->parent = node->val;

			new_ref->inode_list = (struct extent_inode_elem *)

							(uintptr_t)node->aux;

			new_ref->inode_list = unode_aux_to_inode_list(node);

			list_add(&new_ref->list, &ref->list);

		}

		ulist_reinit(parents);
@@ -1476,7 +1482,7 @@ static void free_leaf_list(struct ulist *blocks) 
	while ((node = ulist_next(blocks, &uiter))) {

		if (!node->aux)

			continue;

		eie = (struct extent_inode_elem *)(uintptr_t)node->aux;

		eie = unode_aux_to_inode_list(node);

		free_inode_elem_list(eie);

		node->aux = 0;

	}