head = rb_entry(node, struct btrfs_delayed_ref_head,
href_node);
- if (!mutex_trylock(&head->mutex)) {
- refcount_inc(&head->refs);
- spin_unlock(&delayed_refs->lock);
-
- mutex_lock(&head->mutex);
- mutex_unlock(&head->mutex);
- btrfs_put_delayed_ref_head(head);
- spin_lock(&delayed_refs->lock);
+ if (btrfs_delayed_ref_lock(delayed_refs, head))
continue;
- }
+
spin_lock(&head->lock);
while ((n = rb_first_cached(&head->ref_tree)) != NULL) {
ref = rb_entry(n, struct btrfs_delayed_ref_node,