From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail203.messagelabs.com (mail203.messagelabs.com [216.82.254.243]) by kanga.kvack.org (Postfix) with SMTP id B4AA78D0039 for ; Thu, 3 Feb 2011 18:50:39 -0500 (EST) Received: from m3.gw.fujitsu.co.jp (unknown [10.0.50.73]) by fgwmail5.fujitsu.co.jp (Postfix) with ESMTP id 93B7D3EE0BC for ; Fri, 4 Feb 2011 08:50:37 +0900 (JST) Received: from smail (m3 [127.0.0.1]) by outgoing.m3.gw.fujitsu.co.jp (Postfix) with ESMTP id 7550845DE60 for ; Fri, 4 Feb 2011 08:50:37 +0900 (JST) Received: from s3.gw.fujitsu.co.jp (s3.gw.fujitsu.co.jp [10.0.50.93]) by m3.gw.fujitsu.co.jp (Postfix) with ESMTP id 5C3C945DE5E for ; Fri, 4 Feb 2011 08:50:37 +0900 (JST) Received: from s3.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s3.gw.fujitsu.co.jp (Postfix) with ESMTP id 4B9EB1DB8038 for ; Fri, 4 Feb 2011 08:50:37 +0900 (JST) Received: from ml14.s.css.fujitsu.com (ml14.s.css.fujitsu.com [10.249.87.104]) by s3.gw.fujitsu.co.jp (Postfix) with ESMTP id 15B6AE08004 for ; Fri, 4 Feb 2011 08:50:37 +0900 (JST) Date: Fri, 4 Feb 2011 08:44:33 +0900 From: KAMEZAWA Hiroyuki Subject: Re: [patch 2/2] memcg: simplify the way memory limits are checked Message-Id: <20110204084433.c479a0af.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: <20110203125611.GC2286@cmpxchg.org> References: <1296482635-13421-1-git-send-email-hannes@cmpxchg.org> <1296482635-13421-3-git-send-email-hannes@cmpxchg.org> <20110131144131.6733aa3a.akpm@linux-foundation.org> <20110201000455.GB19534@cmpxchg.org> <20110131162448.e791f0ae.akpm@linux-foundation.org> <20110203125357.GA2286@cmpxchg.org> <20110203125611.GC2286@cmpxchg.org> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Johannes Weiner Cc: Andrew Morton , nishimura@mxp.nes.nec.co.jp, balbir@linux.vnet.ibm.com, minchan.kim@gmail.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org On Thu, 3 Feb 2011 13:56:11 +0100 Johannes Weiner wrote: > Since transparent huge pages, checking whether memory cgroups are > below their limits is no longer enough, but the actual amount of > chargeable space is important. > > To not have more than one limit-checking interface, replace > memory_cgroup_check_under_limit() and memory_cgroup_check_margin() > with a single memory_cgroup_margin() that returns the chargeable space > and leaves the comparison to the callsite. > > Soft limits are now checked the other way round, by using the already > existing function that returns the amount by which soft limits are > exceeded: res_counter_soft_limit_excess(). > > Also remove all the corresponding functions on the res_counter side > that are now no longer used. > > Signed-off-by: Johannes Weiner Acked-by: KAMEZAWA Hiroyuki -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org