Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752551AbZJAVJ6 (ORCPT ); Thu, 1 Oct 2009 17:09:58 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752106AbZJAVJ5 (ORCPT ); Thu, 1 Oct 2009 17:09:57 -0400 Received: from smtp-out.google.com ([216.239.33.17]:48765 "EHLO smtp-out.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751842AbZJAVJ4 (ORCPT ); Thu, 1 Oct 2009 17:09:56 -0400 DomainKey-Signature: a=rsa-sha1; s=beta; d=google.com; c=nofws; q=dns; h=date:from:x-x-sender:to:cc:subject:in-reply-to:message-id: references:user-agent:mime-version:content-type:x-system-of-record; b=pAbfwTi5cgDWI3ei0i1+F9cVy1h+TMUst1E2pYhwkKFhrUdtSaNku1rPsSW6viru6 FjYNLCTc3QJ4/mi24vWMg== Date: Thu, 1 Oct 2009 14:09:54 -0700 (PDT) From: David Rientjes X-X-Sender: rientjes@chino.kir.corp.google.com To: Suresh Jayaraman cc: Linus Torvalds , Andrew Morton , linux-kernel@vger.kernel.org, linux-mm@kvack.org, netdev@vger.kernel.org, Neil Brown , Miklos Szeredi , Wouter Verhelst , Peter Zijlstra , trond.myklebust@fys.uio.no Subject: Re: [PATCH 04/31] mm: tag reseve pages In-Reply-To: <1254405917-15796-1-git-send-email-sjayaraman@suse.de> Message-ID: References: <1254405917-15796-1-git-send-email-sjayaraman@suse.de> User-Agent: Alpine 1.00 (DEB 882 2007-12-20) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-System-Of-Record: true Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1041 Lines: 29 On Thu, 1 Oct 2009, Suresh Jayaraman wrote: > Index: mmotm/mm/page_alloc.c > =================================================================== > --- mmotm.orig/mm/page_alloc.c > +++ mmotm/mm/page_alloc.c > @@ -1501,8 +1501,10 @@ zonelist_scan: > try_this_zone: > page = buffered_rmqueue(preferred_zone, zone, order, > gfp_mask, migratetype); > - if (page) > + if (page) { > + page->reserve = !!(alloc_flags & ALLOC_NO_WATERMARKS); > break; > + } > this_zone_full: > if (NUMA_BUILD) > zlc_mark_zone_full(zonelist, z); page->reserve won't necessary indicate that access to reserves was _necessary_ for the allocation to succeed, though. This will mark any page being allocated under PF_MEMALLOC as reserve when all zones may be well above their min watermarks. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/