[PATCH] Transform kmem_cache_alloc()+memset(0) -> kmem_cache_zalloc().

Replace appropriate pairs of "kmem_cache_alloc()" + "memset(0)" with the
corresponding "kmem_cache_zalloc()" call.

Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Andi Kleen <ak@muc.de>
Cc: Roland McGrath <roland@redhat.com>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: Greg KH <greg@kroah.com>
Acked-by: Joel Becker <Joel.Becker@oracle.com>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Jan Kara <jack@ucw.cz>
Cc: Michael Halcrow <mhalcrow@us.ibm.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Stephen Smalley <sds@tycho.nsa.gov>
Cc: James Morris <jmorris@namei.org>
Cc: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index ecb5422..d7e1e60 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -479,20 +479,18 @@
  */
 static struct mfc_cache *ipmr_cache_alloc(void)
 {
-	struct mfc_cache *c=kmem_cache_alloc(mrt_cachep, GFP_KERNEL);
+	struct mfc_cache *c=kmem_cache_zalloc(mrt_cachep, GFP_KERNEL);
 	if(c==NULL)
 		return NULL;
-	memset(c, 0, sizeof(*c));
 	c->mfc_un.res.minvif = MAXVIFS;
 	return c;
 }
 
 static struct mfc_cache *ipmr_cache_alloc_unres(void)
 {
-	struct mfc_cache *c=kmem_cache_alloc(mrt_cachep, GFP_ATOMIC);
+	struct mfc_cache *c=kmem_cache_zalloc(mrt_cachep, GFP_ATOMIC);
 	if(c==NULL)
 		return NULL;
-	memset(c, 0, sizeof(*c));
 	skb_queue_head_init(&c->mfc_un.unres.unresolved);
 	c->mfc_un.unres.expires = jiffies + 10*HZ;
 	return c;
diff --git a/net/ipv4/ipvs/ip_vs_conn.c b/net/ipv4/ipvs/ip_vs_conn.c
index 8086787..3aec4ac 100644
--- a/net/ipv4/ipvs/ip_vs_conn.c
+++ b/net/ipv4/ipvs/ip_vs_conn.c
@@ -603,13 +603,12 @@
 	struct ip_vs_conn *cp;
 	struct ip_vs_protocol *pp = ip_vs_proto_get(proto);
 
-	cp = kmem_cache_alloc(ip_vs_conn_cachep, GFP_ATOMIC);
+	cp = kmem_cache_zalloc(ip_vs_conn_cachep, GFP_ATOMIC);
 	if (cp == NULL) {
 		IP_VS_ERR_RL("ip_vs_conn_new: no memory available.\n");
 		return NULL;
 	}
 
-	memset(cp, 0, sizeof(*cp));
 	INIT_LIST_HEAD(&cp->c_list);
 	init_timer(&cp->timer);
 	cp->timer.data     = (unsigned long)cp;
diff --git a/net/ipv4/netfilter/ip_conntrack_core.c b/net/ipv4/netfilter/ip_conntrack_core.c
index 8556a4f..62be2eb 100644
--- a/net/ipv4/netfilter/ip_conntrack_core.c
+++ b/net/ipv4/netfilter/ip_conntrack_core.c
@@ -638,14 +638,13 @@
 		}
 	}
 
-	conntrack = kmem_cache_alloc(ip_conntrack_cachep, GFP_ATOMIC);
+	conntrack = kmem_cache_zalloc(ip_conntrack_cachep, GFP_ATOMIC);
 	if (!conntrack) {
 		DEBUGP("Can't allocate conntrack.\n");
 		atomic_dec(&ip_conntrack_count);
 		return ERR_PTR(-ENOMEM);
 	}
 
-	memset(conntrack, 0, sizeof(*conntrack));
 	atomic_set(&conntrack->ct_general.use, 1);
 	conntrack->ct_general.destroy = destroy_conntrack;
 	conntrack->tuplehash[IP_CT_DIR_ORIGINAL].tuple = *orig;