From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Tue, 14 Aug 2007 23:29:55 +0200 From: Andi Kleen Subject: Re: [RFC 4/9] Atomic reclaim: Save irq flags in vmscan.c Message-ID: <20070814212955.GC23308@one.firstfloor.org> References: <20070814153021.446917377@sgi.com> <20070814153501.766137366@sgi.com> <20070814203329.GA22202@one.firstfloor.org> <20070814204454.GC22202@one.firstfloor.org> <20070814212355.GA23308@one.firstfloor.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: owner-linux-mm@kvack.org Return-Path: To: Christoph Lameter Cc: Andi Kleen , linux-mm@kvack.org, linux-kernel@vger.kernel.org List-ID: On Tue, Aug 14, 2007 at 02:26:43PM -0700, Christoph Lameter wrote: > On Tue, 14 Aug 2007, Andi Kleen wrote: > > > > So every spinlock would have an array of chars sized to NR_CPUS and set > > > the flag when the lock is taken? > > > > I was more thinking of a single per cpu flag for all of page reclaim > > That keeps it also cache local. > > We already have such a flag in the zone structure Zone structure is not strictly CPU local so it's broader than needed. But it might work. -Andi -- 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