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slab: remove useless statement for checking pfmemalloc

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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 <ak@linux.intel.com>
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Pekka Enberg <penberg@iki.fi>
This commit is contained in:
Joonsoo Kim 2013-10-24 10:07:50 +09:00 committed by Pekka Enberg
parent 8456a648cf
commit 7ecccf9d1e
1 changed files with 3 additions and 6 deletions
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9
mm/slab.c
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@ -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);
}