diff options
Diffstat (limited to 'lib/radix-tree.c')
| -rw-r--r-- | lib/radix-tree.c | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/lib/radix-tree.c b/lib/radix-tree.c index b65c83036ca4..4b4a2a20a3d1 100644 --- a/lib/radix-tree.c +++ b/lib/radix-tree.c @@ -1395,37 +1395,37 @@ static inline bool radix_tree_shrink(struct radix_tree_root *root) bool shrunk = false; for (;;) { - struct radix_tree_node *to_free = root->rnode; - struct radix_tree_node *slot; + struct radix_tree_node *node = root->rnode; + struct radix_tree_node *child; - if (!radix_tree_is_internal_node(to_free)) + if (!radix_tree_is_internal_node(node)) break; - to_free = entry_to_node(to_free); + node = entry_to_node(node); /* * The candidate node has more than one child, or its child * is not at the leftmost slot, or the child is a multiorder * entry, we cannot shrink. */ - if (to_free->count != 1) + if (node->count != 1) break; - slot = to_free->slots[0]; - if (!slot) + child = node->slots[0]; + if (!child) break; - if (!radix_tree_is_internal_node(slot) && to_free->shift) + if (!radix_tree_is_internal_node(child) && node->shift) break; - if (radix_tree_is_internal_node(slot)) - entry_to_node(slot)->parent = NULL; + if (radix_tree_is_internal_node(child)) + entry_to_node(child)->parent = NULL; /* * We don't need rcu_assign_pointer(), since we are simply * moving the node from one part of the tree to another: if it * was safe to dereference the old pointer to it - * (to_free->slots[0]), it will be safe to dereference the new + * (node->slots[0]), it will be safe to dereference the new * one (root->rnode) as far as dependent read barriers go. */ - root->rnode = slot; + root->rnode = child; /* * We have a dilemma here. The node's slot[0] must not be @@ -1445,10 +1445,10 @@ static inline bool radix_tree_shrink(struct radix_tree_root *root) * also results in a stale slot). So tag the slot as indirect * to force callers to retry. */ - if (!radix_tree_is_internal_node(slot)) - to_free->slots[0] = RADIX_TREE_RETRY; + if (!radix_tree_is_internal_node(child)) + node->slots[0] = RADIX_TREE_RETRY; - radix_tree_node_free(to_free); + radix_tree_node_free(node); shrunk = true; } |