From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx180.postini.com [74.125.245.180]) by kanga.kvack.org (Postfix) with SMTP id 50A4E6B00EA for ; Tue, 15 May 2012 10:36:25 -0400 (EDT) Date: Tue, 15 May 2012 09:09:18 -0500 (CDT) From: Christoph Lameter Subject: Re: Allow migration of mlocked page? In-Reply-To: <4FB1BC3E.3070107@kernel.org> Message-ID: References: <4FAC9786.9060200@kernel.org> <20120511131404.GQ11435@suse.de> <4FB08920.4010001@kernel.org> <20120514133944.GF29102@suse.de> <4FB1BC3E.3070107@kernel.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: Minchan Kim Cc: Mel Gorman , Johannes Weiner , Rik van Riel , Andrew Morton , Andrea Arcangeli , KAMEZAWA Hiroyuki , "linux-mm@kvack.org" , tglx@linutronix.de, Ingo Molnar , Peter Zijlstra , Theodore Ts'o On Tue, 15 May 2012, Minchan Kim wrote: > One of clear point is that it's okay to migrate mlocked page in CMA. > And we can migrate mlocked anonymous pages and mlocked file pages by MIGRATE_ASYNC mode in compaction > if we all agree Peter who says "mlocked mean NO MAJOR FAULT". As far as I can recall the posix definiton mlocked means the page stays in memory and is not evicted. It says nothing about faults. -- 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