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authorChristoph Lameter <clameter@sgi.com>2007-07-17 04:03:29 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-17 10:23:02 -0700
commit94f6030ca792c57422f04a73e7a872d8325946d3 (patch)
tree0197f24d82b1706f1b0521f2cf68feeff64123df /block/cfq-iosched.c
parent81cda6626178cd55297831296ba8ecedbfd8b52d (diff)
Slab allocators: Replace explicit zeroing with __GFP_ZERO
kmalloc_node() and kmem_cache_alloc_node() were not available in a zeroing variant in the past. But with __GFP_ZERO it is possible now to do zeroing while allocating. Use __GFP_ZERO to remove the explicit clearing of memory via memset whereever we can. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'block/cfq-iosched.c')
-rw-r--r--block/cfq-iosched.c18
1 files changed, 9 insertions, 9 deletions
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index e0aa4dad674..9755a3cfad2 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -1251,9 +1251,9 @@ cfq_alloc_io_context(struct cfq_data *cfqd, gfp_t gfp_mask)
{
struct cfq_io_context *cic;
- cic = kmem_cache_alloc_node(cfq_ioc_pool, gfp_mask, cfqd->queue->node);
+ cic = kmem_cache_alloc_node(cfq_ioc_pool, gfp_mask | __GFP_ZERO,
+ cfqd->queue->node);
if (cic) {
- memset(cic, 0, sizeof(*cic));
cic->last_end_request = jiffies;
INIT_LIST_HEAD(&cic->queue_list);
cic->dtor = cfq_free_io_context;
@@ -1376,17 +1376,19 @@ retry:
* free memory.
*/
spin_unlock_irq(cfqd->queue->queue_lock);
- new_cfqq = kmem_cache_alloc_node(cfq_pool, gfp_mask|__GFP_NOFAIL, cfqd->queue->node);
+ new_cfqq = kmem_cache_alloc_node(cfq_pool,
+ gfp_mask | __GFP_NOFAIL | __GFP_ZERO,
+ cfqd->queue->node);
spin_lock_irq(cfqd->queue->queue_lock);
goto retry;
} else {
- cfqq = kmem_cache_alloc_node(cfq_pool, gfp_mask, cfqd->queue->node);
+ cfqq = kmem_cache_alloc_node(cfq_pool,
+ gfp_mask | __GFP_ZERO,
+ cfqd->queue->node);
if (!cfqq)
goto out;
}
- memset(cfqq, 0, sizeof(*cfqq));
-
RB_CLEAR_NODE(&cfqq->rb_node);
INIT_LIST_HEAD(&cfqq->fifo);
@@ -2079,12 +2081,10 @@ static void *cfq_init_queue(request_queue_t *q)
{
struct cfq_data *cfqd;
- cfqd = kmalloc_node(sizeof(*cfqd), GFP_KERNEL, q->node);
+ cfqd = kmalloc_node(sizeof(*cfqd), GFP_KERNEL | __GFP_ZERO, q->node);
if (!cfqd)
return NULL;
- memset(cfqd, 0, sizeof(*cfqd));
-
cfqd->service_tree = CFQ_RB_ROOT;
INIT_LIST_HEAD(&cfqd->cic_list);