From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <4881B303.2010407@cn.fujitsu.com> Date: Sat, 19 Jul 2008 17:25:23 +0800 From: Li Zefan MIME-Version: 1.0 Subject: Re: [-mm][splitlru][PATCH 0/3] munlock rework References: <20080719084213.588795788@jp.fujitsu.com> In-Reply-To: <20080719084213.588795788@jp.fujitsu.com> Content-Type: text/plain; charset=GB2312 Content-Transfer-Encoding: 8bit Sender: owner-linux-mm@kvack.org Return-Path: To: kosaki.motohiro@jp.fujitsu.com Cc: linux-mm@kvack.org, akpm@linux-foundation.org List-ID: kosaki.motohiro@jp.fujitsu.com D'uA: > old munlock processing of unevictable-lru use pagewalk. > because get_user_pages() can't grab PROT_NONE page. > > then, current -mm has two problem. > - build error on nommu machine > - runtime error on HIGHPTE machine. > > So, I hope rework below concept > > Old implementation > - use pagewalk > > New implementation > - use __get_user_pages() > > > I tested this patch on > IA64: >24H stress workload > x86_64: ditto > x86_32 with HIGHPTE: only half hour > > > > Li-san, Could you please try to this patch on your 32bit machine? I've tested this patchset, the bug disappeared and it survived the ltp tests :) . -- 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/ . Don't email: email@kvack.org