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Commit 1fe00d50 authored by Joonsoo Kim's avatar Joonsoo Kim Committed by Linus Torvalds
Browse files

slab: factor out initialization of array cache 



Factor out initialization of array cache to use it in following patch.

Signed-off-by: default avatarJoonsoo Kim <iamjoonsoo.kim@lge.com>
Acked-by: default avatarChristoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Acked-by: default avatarDavid Rientjes <rientjes@google.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 97654dfa

mm/slab.c

+19 −14
Original line number Original line Diff line number Diff line
@@ -791,13 +791,8 @@ static void start_cpu_timer(int cpu) 
	}

	}

}

}





static struct array_cache *alloc_arraycache(int node, int entries,

static void init_arraycache(struct array_cache *ac, int limit, int batch)

					    int batchcount, gfp_t gfp)

{

{

	int memsize = sizeof(void *) * entries + sizeof(struct array_cache);

	struct array_cache *nc = NULL;



	nc = kmalloc_node(memsize, gfp, node);

	/*

	/*

	 * The array_cache structures contain pointers to free object.

	 * The array_cache structures contain pointers to free object.

	 * However, when such objects are allocated or transferred to another

	 * However, when such objects are allocated or transferred to another
@@ -805,15 +800,25 @@ static struct array_cache *alloc_arraycache(int node, int entries, 
	 * valid references during a kmemleak scan. Therefore, kmemleak must

	 * valid references during a kmemleak scan. Therefore, kmemleak must

	 * not scan such objects.

	 * not scan such objects.

	 */

	 */

	kmemleak_no_scan(nc);

	kmemleak_no_scan(ac);

	if (nc) {

	if (ac) {

		nc->avail = 0;

		ac->avail = 0;

		nc->limit = entries;

		ac->limit = limit;

		nc->batchcount = batchcount;

		ac->batchcount = batch;

		nc->touched = 0;

		ac->touched = 0;

		spin_lock_init(&nc->lock);

		spin_lock_init(&ac->lock);

	}

	}

	return nc;

}



static struct array_cache *alloc_arraycache(int node, int entries,

					    int batchcount, gfp_t gfp)

{

	int memsize = sizeof(void *) * entries + sizeof(struct array_cache);

	struct array_cache *ac = NULL;



	ac = kmalloc_node(memsize, gfp, node);

	init_arraycache(ac, entries, batchcount);

	return ac;

}

}





static inline bool is_slab_pfmemalloc(struct page *page)

static inline bool is_slab_pfmemalloc(struct page *page)