From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail138.messagelabs.com (mail138.messagelabs.com [216.82.249.35]) by kanga.kvack.org (Postfix) with SMTP id 59EBB6B0114 for ; Wed, 17 Mar 2010 12:39:25 -0400 (EDT) Date: Wed, 17 Mar 2010 11:38:54 -0500 (CDT) From: Christoph Lameter Subject: Re: [PATCH 01/11] mm,migration: Take a reference to the anon_vma before migrating In-Reply-To: <20100317114537.GF12388@csn.ul.ie> Message-ID: References: <1268412087-13536-1-git-send-email-mel@csn.ul.ie> <1268412087-13536-2-git-send-email-mel@csn.ul.ie> <20100317103434.4C8B.A69D9226@jp.fujitsu.com> <20100317114537.GF12388@csn.ul.ie> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org To: Mel Gorman Cc: KOSAKI Motohiro , Andrew Morton , Andrea Arcangeli , Adam Litke , Avi Kivity , David Rientjes , Rik van Riel , linux-kernel@vger.kernel.org, linux-mm@kvack.org List-ID: On Wed, 17 Mar 2010, Mel Gorman wrote: > This is true, but I don't think such a change belongs in this patch > series. If this series gets merged, then it would be sensible to investigate > if refcounting anon_vma is a good idea or would it be a bouncing write-shared > cacheline mess. SLAB_DESTROY_BY_RCU is there to avoid the cooling of hot cachelines by RCU. -- 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