From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qg0-f43.google.com (mail-qg0-f43.google.com [209.85.192.43]) by kanga.kvack.org (Postfix) with ESMTP id C02546B006C for ; Thu, 11 Jun 2015 18:01:26 -0400 (EDT) Received: by qgf75 with SMTP id 75so6064933qgf.1 for ; Thu, 11 Jun 2015 15:01:26 -0700 (PDT) Received: from mx0b-00082601.pphosted.com (mx0b-00082601.pphosted.com. [67.231.153.30]) by mx.google.com with ESMTPS id w53si498154qge.37.2015.06.11.15.01.25 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Thu, 11 Jun 2015 15:01:26 -0700 (PDT) Date: Thu, 11 Jun 2015 15:01:15 -0700 From: Shaohua Li Subject: Re: [RFC] net: use atomic allocation for order-3 page allocation Message-ID: <20150611220115.GA448912@devbig257.prn2.facebook.com> References: <71a20cf185c485fa23d9347bd846a6f4e9753405.1434053941.git.shli@fb.com> <1434055687.27504.51.camel@edumazet-glaptop2.roam.corp.google.com> <5579FABE.4050505@fb.com> <1434057733.27504.52.camel@edumazet-glaptop2.roam.corp.google.com> <20150611214525.GA406740@devbig257.prn2.facebook.com> <1434059786.27504.58.camel@edumazet-glaptop2.roam.corp.google.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <1434059786.27504.58.camel@edumazet-glaptop2.roam.corp.google.com> Sender: owner-linux-mm@kvack.org List-ID: To: Eric Dumazet Cc: Chris Mason , netdev@vger.kernel.org, davem@davemloft.net, Kernel-team@fb.com, Eric Dumazet , David Rientjes , linux-mm@kvack.org On Thu, Jun 11, 2015 at 02:56:26PM -0700, Eric Dumazet wrote: > On Thu, 2015-06-11 at 14:45 -0700, Shaohua Li wrote: > > > This is exactly what the patch try to do. Atomic 32k allocation will > > fail with memory pressure, kswapd is waken up to do compaction and we > > fallback to 4k. > > Read your changelog, then read what you just wrote. > > Your changelog said : > > 'compaction will not be triggered and we will fallback to order-0 > immediately.' > > Now you tell me that compaction is started. > > What is the truth ? > > Please make sure changelog is precise, this would avoid many mails. Ah, ok. I mean direct compaction isn't triggered, kswapd is still waken up to do compaction. I'll update the changelog. -- 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