From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail137.messagelabs.com (mail137.messagelabs.com [216.82.249.19]) by kanga.kvack.org (Postfix) with SMTP id 7DDA48D0001 for ; Wed, 3 Nov 2010 23:13:35 -0400 (EDT) Received: by qyk5 with SMTP id 5so760136qyk.14 for ; Wed, 03 Nov 2010 20:13:34 -0700 (PDT) From: Ben Gamari Subject: Re: [PATCH] Add Kconfig option for default swappiness In-Reply-To: References: <1288668052-32036-1-git-send-email-bgamari.foss@gmail.com> <87oca7evbo.fsf@gmail.com> Date: Wed, 03 Nov 2010 23:13:31 -0400 Message-ID: <878w19bx2c.fsf@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-linux-mm@kvack.org To: David Rientjes Cc: KAMEZAWA Hiroyuki , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Jesper Juhl , Wu Fengguang List-ID: On Tue, 2 Nov 2010 12:39:52 -0700 (PDT), David Rientjes wrote: > On Tue, 2 Nov 2010, Ben Gamari wrote: > > Packaging concerns, as I mentioned before, > > That you snipped from the changelog? > Guilty as charged. Sorry about that, time has been in short supply recently. > You could say the same thing for any sysctl, it's not indicative of why > this particular change is needed in the kernel. > This is certainly true; a distribution could in principle want to tweak the default values of any of the sysctl knobs. If we wanted to tweak anything else in addition to swappiness that I wouldn't have even bothered to submit the patch since I'll be the first to admit that the precedent set by further growing the Kconfig phase space is not a positive one. That being said, swappiness is one of the more significant knobs in the vm and certainly one of the more likely to be tuned by a distribution. > Let's not have the "in short" answer, what's the "long" answer? See my recent response to Wu Fengguang. Cheers, - Ben -- 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/ . Fight unfair telecom policy in Canada: sign http://dissolvethecrtc.ca/ Don't email: email@kvack.org