[PATCHv4 2/7] slub: use page->rcu_head instead of page->lru plus cast
From: Kirill A. Shutemov <hidden>
Date: 2015-08-27 14:01:14
Also in:
lkml
Subsystem:
memory management, slab allocator, the rest · Maintainers:
Andrew Morton, Vlastimil Babka, Harry Yoo, Linus Torvalds
We have properly typed page->rcu_head, no need to cast page->lru. Signed-off-by: Kirill A. Shutemov <redacted> Cc: Christoph Lameter <redacted> --- mm/slub.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/mm/slub.c b/mm/slub.c
index 816df0016555..869642d03b22 100644
--- a/mm/slub.c
+++ b/mm/slub.c@@ -1510,10 +1510,7 @@ static void free_slab(struct kmem_cache *s, struct page *page) VM_BUG_ON(s->reserved != sizeof(*head)); head = page_address(page) + offset; } else { - /* - * RCU free overloads the RCU head over the LRU - */ - head = (void *)&page->lru; + head = &page->rcu_head; } call_rcu(head, rcu_free_slab);
--
2.5.0
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