From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762777AbXHONV4 (ORCPT ); Wed, 15 Aug 2007 09:21:56 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757857AbXHONVb (ORCPT ); Wed, 15 Aug 2007 09:21:31 -0400 Received: from cantor2.suse.de ([195.135.220.15]:49458 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757449AbXHONV3 (ORCPT ); Wed, 15 Aug 2007 09:21:29 -0400 To: Peter Zijlstra Cc: Nick Piggin , Christoph Lameter , linux-mm@kvack.org, linux-kernel@vger.kernel.org, akpm@linux-foundation.org, dkegel@google.com, David Miller , Daniel Phillips Subject: Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC) References: <20070814142103.204771292@sgi.com> <20070815122253.GA15268@wotan.suse.de> <1187183526.6114.45.camel@twins> From: Andi Kleen Date: 15 Aug 2007 16:15:35 +0200 In-Reply-To: <1187183526.6114.45.camel@twins> Message-ID: User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Peter Zijlstra writes: > > Christoph's suggestion to set min_free_kbytes to 20% is ridiculous - nor > does it solve all deadlocks :-( A minimum enforced reclaimable non dirty threshold wouldn't be that ridiculous though. So the memory could be used, just not for dirty data. His patchkit essentially turns the GFP_ATOMIC requirements from free to easily reclaimable. I see that as an general improvement. I remember sct talked about this many years ago and it's still a good idea. -Andi From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: [RFC 0/3] Recursive reclaim (on __PF_MEMALLOC) References: <20070814142103.204771292@sgi.com> <20070815122253.GA15268@wotan.suse.de> <1187183526.6114.45.camel@twins> From: Andi Kleen Date: 15 Aug 2007 16:15:35 +0200 In-Reply-To: <1187183526.6114.45.camel@twins> Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-linux-mm@kvack.org Return-Path: To: Peter Zijlstra Cc: Nick Piggin , Christoph Lameter , linux-mm@kvack.org, linux-kernel@vger.kernel.org, akpm@linux-foundation.org, dkegel@google.com, David Miller , Daniel Phillips List-ID: Peter Zijlstra writes: > > Christoph's suggestion to set min_free_kbytes to 20% is ridiculous - nor > does it solve all deadlocks :-( A minimum enforced reclaimable non dirty threshold wouldn't be that ridiculous though. So the memory could be used, just not for dirty data. His patchkit essentially turns the GFP_ATOMIC requirements from free to easily reclaimable. I see that as an general improvement. I remember sct talked about this many years ago and it's still a good idea. -Andi -- 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