From mboxrd@z Thu Jan 1 00:00:00 1970 From: Josh Triplett Subject: Re: linux-next: build failure after merge of the akpm-current tree Date: Mon, 27 Jul 2015 15:10:40 -0700 Message-ID: <20150727221040.GA4038@jtriplet-mobl1> References: <20150724153334.543cfc7b@canb.auug.org.au> <1437768965.3298.52.camel@stgolabs.net> <20150724230902.GQ3717@linux.vnet.ibm.com> <20150725194739.GA9753@x> <1437859442.3298.68.camel@stgolabs.net> <20150725223524.GA14593@x> <20150727130312.d87e352473dfd8b431c8c07b@linux-foundation.org> <20150727202758.GA28119@cloud> <20150727133133.a2c22062fba70b971f449d0a@linux-foundation.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from relay3-d.mail.gandi.net ([217.70.183.195]:40763 "EHLO relay3-d.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752739AbbG0WKr (ORCPT ); Mon, 27 Jul 2015 18:10:47 -0400 Content-Disposition: inline In-Reply-To: <20150727133133.a2c22062fba70b971f449d0a@linux-foundation.org> Sender: linux-next-owner@vger.kernel.org List-ID: To: Andrew Morton Cc: Davidlohr Bueso , "Paul E. McKenney" , Stephen Rothwell , linux-next@vger.kernel.org, linux-kernel@vger.kernel.org On Mon, Jul 27, 2015 at 01:31:33PM -0700, Andrew Morton wrote: > On Mon, 27 Jul 2015 13:27:58 -0700 josh@joshtriplett.org wrote: > > > I agree with that. I'm wondering if, rather than making the > > SRCU-ification optional, shrinkers themselves could just be optional. > > Unless I'm badly misunderstanding what shrinkers do, they seem like a > > perfect example of something that could be omitted with little to no > > impact. (Stub them out, make them never called, and if you run out of > > memory just be unhappy. Ditto for the oom-killer, which really ought to > > be optional.) > > The shrinkers do important stuff ;) "find /" will consume large amounts > of memory for inode and dentry caches. The shrinkers are how we free > that up again. *Ah*, I see. I misunderstood their purpose, and I didn't realize that was one of the cases they covered. While that might be possible to reduce, it doesn't sound like it can go away entirely. :) - Josh Triplett