From mboxrd@z Thu Jan 1 00:00:00 1970 Received: by py-out-1112.google.com with SMTP id v53so428843pyh for ; Wed, 09 May 2007 20:48:12 -0700 (PDT) Message-ID: <2c0942db0705092048m38b36e7fo3a7c2c59fe1612b2@mail.gmail.com> Date: Wed, 9 May 2007 20:48:11 -0700 From: "Ray Lee" Subject: Re: swap-prefetch: 2.6.22 -mm merge plans In-Reply-To: <46427BDB.30004@yahoo.com.au> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20070430162007.ad46e153.akpm@linux-foundation.org> <200705100928.34056.kernel@kolivas.org> <464261B5.6030809@yahoo.com.au> <200705101134.34350.kernel@kolivas.org> <46427BDB.30004@yahoo.com.au> Sender: owner-linux-mm@kvack.org Return-Path: To: Nick Piggin Cc: Con Kolivas , Ingo Molnar , ck list , Andrew Morton , linux-kernel@vger.kernel.org, linux-mm@kvack.org List-ID: On 5/9/07, Nick Piggin wrote: > You said it helped with the updatedb problem. That says we should look at > why it is going bad first, and for example improve use-once algorithms. > After we do that, then swap prefetching might still help, which is fine. Nick, if you're volunteering to do that analysis, then great. If not, then you're just providing a airy hope with nothing to back up when or if that work would ever occur. Further, if you or someone else *does* do that work, then guess what, we still have the option to rip out the swap prefetching code after the hypothetical use-once improvements have been proven and merged. Which, by the way, I've watched people talk about since 2.4. That was, y'know, a *while* ago. So enough with the stop energy, okay? You're better than that. Con? He is right about the last feature to go in needs to work gracefully with what's there now. However, it's not unheard of for authors of other sections of code to help out with incompatibilities by answering politely phrased questions for guidance. Though the intersection of users between cpusets and desktop systems seems small indeed. -- 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