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authorJoonsoo Kim <iamjoonsoo.kim@lge.com>2013-10-24 10:07:50 +0900
committerPekka Enberg <penberg@iki.fi>2013-10-24 20:17:34 +0300
commit7ecccf9d1e416fe61bb1caa0a94605b522feeaf3 (patch)
tree5261bed04e358b1bf9e84ff2ad050157d12edcad /mm/slab.c
parent8456a648cf44f14365f1f44de90a3da2526a4776 (diff)
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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 <ak@linux.intel.com> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Pekka Enberg <penberg@iki.fi>
Diffstat (limited to 'mm/slab.c')
-rw-r--r--mm/slab.c9
1 files changed, 3 insertions, 6 deletions
diff --git a/mm/slab.c b/mm/slab.c
index 0e7f2e73e08e..fbb594f2259a 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);
}