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Message-ID: <alpine.LNX.2.00.1010302333130.1572@swampdragon.chaosbits.net> Date: Sat, 30 Oct 2010 23:35:46 +0200 (CEST) From: Jesper Juhl <jj@...osbits.net> To: linux-kernel@...r.kernel.org cc: linux-mm@...ck.org, Paul Menage <menage@...gle.com>, Li Zefan <lizf@...fujitsu.com>, containers@...ts.linux-foundation.org Subject: [PATCH] cgroup: Avoid a memset by using vzalloc Hi, We can avoid doing a memset in swap_cgroup_swapon() by using vzalloc(). Signed-off-by: Jesper Juhl <jj@...osbits.net> --- compile tested only. page_cgroup.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/mm/page_cgroup.c b/mm/page_cgroup.c index 5bffada..34970c7 100644 --- a/mm/page_cgroup.c +++ b/mm/page_cgroup.c @@ -450,11 +450,10 @@ int swap_cgroup_swapon(int type, unsigned long max_pages) length = ((max_pages/SC_PER_PAGE) + 1); array_size = length * sizeof(void *); - array = vmalloc(array_size); + array = vzalloc(array_size); if (!array) goto nomem; - memset(array, 0, array_size); ctrl = &swap_cgroup_ctrl[type]; mutex_lock(&swap_cgroup_mutex); ctrl->length = length; -- Jesper Juhl <jj@...osbits.net> http://www.chaosbits.net/ Plain text mails only, please http://www.expita.com/nomime.html Don't top-post http://www.catb.org/~esr/jargon/html/T/top-post.html -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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