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-rw-r--r--mm/filemap.c23
1 files changed, 3 insertions, 20 deletions
diff --git a/mm/filemap.c b/mm/filemap.c
index b418405903bc..9665b1d4f318 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -114,14 +114,11 @@ static void page_cache_tree_delete(struct address_space *mapping,
struct page *page, void *shadow)
{
struct radix_tree_node *node;
- unsigned long index;
- unsigned int offset;
- unsigned int tag;
- void **slot;
VM_BUG_ON(!PageLocked(page));
- __radix_tree_lookup(&mapping->page_tree, page->index, &node, &slot);
+ node = radix_tree_replace_clear_tags(&mapping->page_tree, page->index,
+ shadow);
if (shadow) {
mapping->nrexceptional++;
@@ -135,23 +132,9 @@ static void page_cache_tree_delete(struct address_space *mapping,
}
mapping->nrpages--;
- if (!node) {
- /* Clear direct pointer tags in root node */
- mapping->page_tree.gfp_mask &= __GFP_BITS_MASK;
- radix_tree_replace_slot(slot, shadow);
+ if (!node)
return;
- }
-
- /* Clear tree tags for the removed page */
- index = page->index;
- offset = index & RADIX_TREE_MAP_MASK;
- for (tag = 0; tag < RADIX_TREE_MAX_TAGS; tag++) {
- if (test_bit(offset, node->tags[tag]))
- radix_tree_tag_clear(&mapping->page_tree, index, tag);
- }
- /* Delete page, swap shadow entry */
- radix_tree_replace_slot(slot, shadow);
workingset_node_pages_dec(node);
if (shadow)
workingset_node_shadows_inc(node);