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slab: factor out initialization of array cache

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

Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Acked-by: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Joonsoo Kim 2014-08-06 16:04:27 -07:00 committed by Linus Torvalds
parent 97654dfa20
commit 1fe00d50a9
1 changed files with 19 additions and 14 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

33
mm/slab.c
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@ -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)