From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail190.messagelabs.com (mail190.messagelabs.com [216.82.249.51]) by kanga.kvack.org (Postfix) with ESMTP id C970F6B0082 for ; Fri, 8 Jan 2010 00:01:00 -0500 (EST) Date: Thu, 7 Jan 2010 21:00:34 -0800 (PST) From: Linus Torvalds Subject: Re: [RFC][PATCH 6/8] mm: handle_speculative_fault() In-Reply-To: <20100107204940.253ed753@infradead.org> Message-ID: References: <20100104182429.833180340@chello.nl> <20100104182813.753545361@chello.nl> <20100105054536.44bf8002@infradead.org> <20100105192243.1d6b2213@infradead.org> <20100107204940.253ed753@infradead.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org To: Arjan van de Ven Cc: Christoph Lameter , Peter Zijlstra , "Paul E. McKenney" , Peter Zijlstra , KAMEZAWA Hiroyuki , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , "minchan.kim@gmail.com" , "hugh.dickins" , Nick Piggin , Ingo Molnar List-ID: On Thu, 7 Jan 2010, Arjan van de Ven wrote: > > if an app has to change because our kernel sucks (for no good reason), > "change the app" really is the lame type of answer. Well, in all fairness, I doubt other kernels do any better. So changing the app is likely to help in general, and thus be at least part of the right solution. But as outlined, we _can_ almost certainly do better on many simple and common cases, so changing the kernel - in addition to fixing app memory allocation patterns - sounds like a good avenue. Linus -- 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