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Commit 7ecccf9d authored by Joonsoo Kim's avatar Joonsoo Kim Committed by Pekka Enberg
Browse files

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: default avatarAndi Kleen <ak@linux.intel.com>
Signed-off-by: default avatarJoonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: default avatarPekka Enberg <penberg@iki.fi>
parent 8456a648

mm/slab.c

+3 −6
Original line number Diff line number Diff line
@@ -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);

	}