From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail6.bemta12.messagelabs.com (mail6.bemta12.messagelabs.com [216.82.250.247]) by kanga.kvack.org (Postfix) with ESMTP id 05944900138 for ; Thu, 8 Sep 2011 14:41:18 -0400 (EDT) Date: Thu, 8 Sep 2011 13:41:14 -0500 (CDT) From: Christoph Lameter Subject: Re: [PATCH 2/2] slub: continue to seek slab in node partial if met a null page In-Reply-To: <1315471083.31737.284.camel@debian> Message-ID: References: <1315188460.31737.5.camel@debian> <1315357399.31737.49.camel@debian> <1315362396.31737.151.camel@debian> <1315363526.31737.164.camel@debian> <1315471083.31737.284.camel@debian> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: "Alex,Shi" Cc: "penberg@kernel.org" , "akpm@linux-foundation.org" , "linux-mm@kvack.org" , Andi Kleen On Thu, 8 Sep 2011, Alex,Shi wrote: > > > If it happen, we'd better to skip the full page and to seek next slab in > > > node partial instead of jump to other nodes. > > > > But I agree that the patch can be beneficial if acquire slab ever returns > > a full page. That should not happen though. Is this theoretical or do you > > have actual tests that show that this occurs? > > I didn't find a real case for this now. So, do you still like to pick up > this as a defense for future more lockless usage? I am at a conference and its a bit difficult to see the state of affairs right now. Lets first defer it until I can see how this would otherwise impact things. -- 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 internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org