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xen/blkback: use kmem_cache_zalloc instead of kmem_cache_alloc/memset 

Using kmem_cache_zalloc() instead of kmem_cache_alloc() and memset().

spatch with a semantic match is used to found this problem.
(http://coccinelle.lip6.fr/)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
This commit is contained in:
Wei Yongjun 2012-08-27 12:28:57 +08:00 committed by Jens Axboe
parent dbd4713348
commit 654dbef214
1 changed files with 1 additions and 2 deletions
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3
drivers/block/xen-blkback/xenbus.c
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@ -105,11 +105,10 @@ static struct xen_blkif *xen_blkif_alloc(domid_t domid)
{
struct xen_blkif *blkif;
blkif = kmem_cache_alloc(xen_blkif_cachep, GFP_KERNEL);
blkif = kmem_cache_zalloc(xen_blkif_cachep, GFP_KERNEL);
if (!blkif)
return ERR_PTR(-ENOMEM);
memset(blkif, 0, sizeof(*blkif));
blkif->domid = domid;
spin_lock_init(&blkif->blk_ring_lock);
atomic_set(&blkif->refcnt, 1);