linux-kernel - [PATCH 2/7] cgroups: use simple_malloc()/simple

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Message-ID: <491FA290.8070601@cn.fujitsu.com>
Date:	Sun, 16 Nov 2008 12:33:20 +0800
From:	Lai Jiangshan <laijs@...fujitsu.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	Paul Menage <menage@...gle.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: [PATCH 2/7] cgroups: use simple_malloc()/simple_free()


use simple_malloc()/simple_free() for large tasks file.

Signed-off-by: Lai Jiangshan <laijs@...fujitsu.com>
---
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 358e775..349ec9a 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -2167,7 +2167,7 @@ static void release_cgroup_pid_array(struct cgroup *cgrp)
 	down_write(&cgrp->pids_mutex);
 	BUG_ON(!cgrp->pids_use_count);
 	if (!--cgrp->pids_use_count) {
-		kfree(cgrp->tasks_pids);
+		simple_free(cgrp->tasks_pids);
 		cgrp->tasks_pids = NULL;
 		cgrp->pids_length = 0;
 	}
@@ -2215,7 +2215,7 @@ static int cgroup_tasks_open(struct inode *unused, struct file *file)
 	 * show up until sometime later on.
 	 */
 	npids = cgroup_task_count(cgrp);
-	pidarray = kmalloc(npids * sizeof(pid_t), GFP_KERNEL);
+	pidarray = simple_malloc(npids * sizeof(pid_t));
 	if (!pidarray)
 		return -ENOMEM;
 	npids = pid_array_load(pidarray, npids, cgrp);



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