From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751545Ab3BFFZ4 (ORCPT ); Wed, 6 Feb 2013 00:25:56 -0500 Received: from cn.fujitsu.com ([222.73.24.84]:13190 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1750898Ab3BFFZy (ORCPT ); Wed, 6 Feb 2013 00:25:54 -0500 X-IronPort-AV: E=Sophos;i="4.84,613,1355068800"; d="scan'208";a="6694991" Message-ID: <5111E761.5070203@cn.fujitsu.com> Date: Wed, 06 Feb 2013 13:17:21 +0800 From: Zhang Yanfei User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0.8) Gecko/20121012 Thunderbird/10.0.8 MIME-Version: 1.0 To: Andrew Morton , mgorman@suse.de, minchan@kernel.org, kamezawa.hiroyu@jp.fujitsu.com CC: Linux MM , "linux-kernel@vger.kernel.org" Subject: [PATCH 3/7] fs/buffer.c: change type of max_buffer_heads to unsigned long References: <5111E612.4010907@cn.fujitsu.com> In-Reply-To: <5111E612.4010907@cn.fujitsu.com> X-MIMETrack: Itemize by SMTP Server on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2013/02/06 13:17:37, Serialize by Router on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2013/02/06 13:17:39, Serialize complete at 2013/02/06 13:17:39 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org max_buffer_heads is calculated from nr_free_buffer_pages(), so change its type to unsigned long in case of overflow. Signed-off-by: Zhang Yanfei --- fs/buffer.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/buffer.c b/fs/buffer.c index 7a75c3e..3eb675b 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -3227,7 +3227,7 @@ static struct kmem_cache *bh_cachep __read_mostly; * Once the number of bh's in the machine exceeds this level, we start * stripping them in writeback. */ -static int max_buffer_heads; +static unsigned long max_buffer_heads; int buffer_heads_over_limit; @@ -3343,7 +3343,7 @@ EXPORT_SYMBOL(bh_submit_read); void __init buffer_init(void) { - int nrpages; + unsigned long nrpages; bh_cachep = kmem_cache_create("buffer_head", sizeof(struct buffer_head), 0, -- 1.7.1