From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Fri, 1 Dec 2006 11:56:46 -0800 (PST) From: Christoph Lameter Subject: Re: [RFC][PATCH 0/1] Node-based reclaim/migration In-Reply-To: <6599ad830612011132i3e70ab38ye3bc8e48f879fea3@mail.gmail.com> Message-ID: References: <20061129030655.941148000@menage.corp.google.com> <6599ad830611301153i231765a0ke46846bcb73258d6@mail.gmail.com> <6599ad830611301207q4e4ab485lb0d3c99680db5a2a@mail.gmail.com> <6599ad830611301333v48f2da03g747c088ed3b4ad60@mail.gmail.com> <6599ad830611301548y66e5e66eo2f61df940a66711a@mail.gmail.com> <6599ad830612011132i3e70ab38ye3bc8e48f879fea3@mail.gmail.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Paul Menage Cc: KAMEZAWA Hiroyuki , Hugh Dickins , linux-mm@kvack.org, akpm@osdl.org List-ID: On Fri, 1 Dec 2006, Paul Menage wrote: > > I was thinking of a new anon_vma, rather than a new vma - but I guess > that even if we do race with someone who's faulting on the page and > pulling it from the swap cache, they'll just set the page mapping to > the same value as it is already, rather than setting it to a new > value. So you're right, not a problem. The page is locked during migration to prevent such occurrences. -- 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