From 7ecccf9d1e416fe61bb1caa0a94605b522feeaf3 Mon Sep 17 00:00:00 2001 From: Joonsoo Kim Date: Thu, 24 Oct 2013 10:07:50 +0900 Subject: slab: remove useless statement for checking pfmemalloc Now, virt_to_page(page->s_mem) is same as the page, because slab use this structure for management. So remove useless statement. Acked-by: Andi Kleen Signed-off-by: Joonsoo Kim Signed-off-by: Pekka Enberg --- mm/slab.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) (limited to 'mm') diff --git a/mm/slab.c b/mm/slab.c index 0e7f2e7..fbb594f 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -750,9 +750,7 @@ static struct array_cache *alloc_arraycache(int node, int entries, static inline bool is_slab_pfmemalloc(struct page *page) { - struct page *mem_page = virt_to_page(page->s_mem); - - return PageSlabPfmemalloc(mem_page); + return PageSlabPfmemalloc(page); } /* Clears pfmemalloc_active if no slabs have pfmalloc set */ @@ -817,7 +815,7 @@ static void *__ac_get_obj(struct kmem_cache *cachep, struct array_cache *ac, n = cachep->node[numa_mem_id()]; if (!list_empty(&n->slabs_free) && force_refill) { struct page *page = virt_to_head_page(objp); - ClearPageSlabPfmemalloc(virt_to_head_page(page->s_mem)); + ClearPageSlabPfmemalloc(page); clear_obj_pfmemalloc(&objp); recheck_pfmemalloc_active(cachep, ac); return objp; @@ -850,8 +848,7 @@ static void *__ac_put_obj(struct kmem_cache *cachep, struct array_cache *ac, if (unlikely(pfmemalloc_active)) { /* Some pfmemalloc slabs exist, check if this is one */ struct page *page = virt_to_head_page(objp); - struct page *mem_page = virt_to_head_page(page->s_mem); - if (PageSlabPfmemalloc(mem_page)) + if (PageSlabPfmemalloc(page)) set_obj_pfmemalloc(&objp); } -- cgit v1.1