From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <46A83C7A.80601@yahoo.com.au> Date: Thu, 26 Jul 2007 16:17:30 +1000 From: Nick Piggin MIME-Version: 1.0 Subject: Re: -mm merge plans for 2.6.23 References: <20070710013152.ef2cd200.akpm@linux-foundation.org> <9a8748490707231608h453eefffx68b9c391897aba70@mail.gmail.com> <46A57068.3070701@yahoo.com.au> <2c0942db0707232153j3670ef31kae3907dff1a24cb7@mail.gmail.com> <46A58B49.3050508@yahoo.com.au> <2c0942db0707240915h56e007e3l9110e24a065f2e73@mail.gmail.com> <46A6CC56.6040307@yahoo.com.au> <46A6D7D2.4050708@gmail.com> <1185341449.7105.53.camel@perkele> <46A6E1A1.4010508@yahoo.com.au> <2c0942db0707250909r435fef75sa5cbf8b1c766000b@mail.gmail.com> <20070725215717.df1d2eea.akpm@linux-foundation.org> <46A836E1.1000404@yahoo.com.au> <20070725230609.d2d1be59.akpm@linux-foundation.org> In-Reply-To: <20070725230609.d2d1be59.akpm@linux-foundation.org> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Andrew Morton Cc: Ray Lee , Eric St-Laurent , Rene Herman , Jesper Juhl , ck list , Ingo Molnar , Paul Jackson , linux-mm@kvack.org, linux-kernel@vger.kernel.org List-ID: Andrew Morton wrote: > On Thu, 26 Jul 2007 15:53:37 +1000 Nick Piggin wrote: > > >>Not that I want to say anything about swap prefetch getting merged: my >>inbox is already full of enough "helpful suggestions" about that, > > > give them the kernel interfaces, they can do it themselves ;) It is a good idea if we can give enough to get started. Then if they run into something they really need to do in the kernel, we can take a look. Page eviction order / prefetch-back-in-order might be tricky to expose. >>so I'll >>just be happy to have a look at little things like updatedb. > > > Yes, that is a little thing. I mean, even if the kernel's behaviour > during an updatedb run was "perfect" (ie: does what we the designers > curently intend it to do (whatever that is)) then the core problem isn't > solved: short-term workload evicts your working set and you have to > synchronously reestablish it. Sure, I know and I was never against swap (and/or file) prefetching to solve this problem. I'm just saying, I'm staying out of that :) -- SUSE Labs, Novell Inc. -- 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