linux-kernel - [PATCH 14/25] dm mpath: use kzalloc

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Date:	Thu, 14 Sep 2006 22:46:49 +0100
From:	Alasdair G Kergon <agk@...hat.com>
To:	Andrew Morton <akpm@...l.org>
Cc:	linux-kernel@...r.kernel.org,
	Micha³ Miros³aw <mirq-linux@...e.qmqm.pl>
Subject: [PATCH 14/25] dm mpath: use kzalloc

From: Micha³ Miros³aw <mirq-linux@...e.qmqm.pl>

Use kzalloc() instead of kmalloc() + memset().

Signed-off-by: Micha³ Miros³aw <mirq-linux@...e.qmqm.pl>
Signed-off-by: Alasdair G Kergon <agk@...hat.com>

Index: linux-2.6.18-rc7/drivers/md/dm-mpath.c
===================================================================
--- linux-2.6.18-rc7.orig/drivers/md/dm-mpath.c	2006-09-14 20:54:49.000000000 +0100
+++ linux-2.6.18-rc7/drivers/md/dm-mpath.c	2006-09-14 20:55:20.000000000 +0100
@@ -114,12 +114,10 @@ static void trigger_event(void *data);
 
 static struct pgpath *alloc_pgpath(void)
 {
-	struct pgpath *pgpath = kmalloc(sizeof(*pgpath), GFP_KERNEL);
+	struct pgpath *pgpath = kzalloc(sizeof(*pgpath), GFP_KERNEL);
 
-	if (pgpath) {
-		memset(pgpath, 0, sizeof(*pgpath));
+	if (pgpath)
 		pgpath->path.is_active = 1;
-	}
 
 	return pgpath;
 }
@@ -133,12 +131,10 @@ static struct priority_group *alloc_prio
 {
 	struct priority_group *pg;
 
-	pg = kmalloc(sizeof(*pg), GFP_KERNEL);
-	if (!pg)
-		return NULL;
+	pg = kzalloc(sizeof(*pg), GFP_KERNEL);
 
-	memset(pg, 0, sizeof(*pg));
-	INIT_LIST_HEAD(&pg->pgpaths);
+	if (pg)
+		INIT_LIST_HEAD(&pg->pgpaths);
 
 	return pg;
 }
@@ -172,9 +168,8 @@ static struct multipath *alloc_multipath
 {
 	struct multipath *m;
 
-	m = kmalloc(sizeof(*m), GFP_KERNEL);
+	m = kzalloc(sizeof(*m), GFP_KERNEL);
 	if (m) {
-		memset(m, 0, sizeof(*m));
 		INIT_LIST_HEAD(&m->priority_groups);
 		spin_lock_init(&m->lock);
 		m->queue_io = 1;
-
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