diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/radix-tree.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/lib/radix-tree.c b/lib/radix-tree.c index 648da9080418..75c9e6197b5b 100644 --- a/lib/radix-tree.c +++ b/lib/radix-tree.c @@ -1415,8 +1415,10 @@ unsigned long radix_tree_locate_item(struct radix_tree_root *root, void *item) * radix_tree_shrink - shrink height of a radix tree to minimal * @root radix tree root */ -static inline void radix_tree_shrink(struct radix_tree_root *root) +static inline bool radix_tree_shrink(struct radix_tree_root *root) { + bool shrunk = false; + /* try to shrink tree height */ while (root->height > 0) { struct radix_tree_node *to_free = root->rnode; @@ -1476,7 +1478,10 @@ static inline void radix_tree_shrink(struct radix_tree_root *root) to_free->slots[0] = RADIX_TREE_RETRY; radix_tree_node_free(to_free); + shrunk = true; } + + return shrunk; } /** @@ -1499,11 +1504,8 @@ bool __radix_tree_delete_node(struct radix_tree_root *root, struct radix_tree_node *parent; if (node->count) { - if (node == indirect_to_ptr(root->rnode)) { - radix_tree_shrink(root); - if (root->height == 0) - deleted = true; - } + if (node == indirect_to_ptr(root->rnode)) + deleted |= radix_tree_shrink(root); return deleted; } |