From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on archive.lwn.net X-Spam-Level: X-Spam-Status: No, score=-5.8 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham autolearn_force=no version=3.4.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by archive.lwn.net (Postfix) with ESMTP id B74A17D57F for ; Tue, 11 Sep 2018 22:02:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728193AbeILDEH (ORCPT ); Tue, 11 Sep 2018 23:04:07 -0400 Received: from ipmail01.adl6.internode.on.net ([150.101.137.136]:62401 "EHLO ipmail01.adl6.internode.on.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727762AbeILDEH (ORCPT ); Tue, 11 Sep 2018 23:04:07 -0400 Received: from ppp59-167-129-252.static.internode.on.net (HELO dastard) ([59.167.129.252]) by ipmail01.adl6.internode.on.net with ESMTP; 12 Sep 2018 07:32:44 +0930 Received: from dave by dastard with local (Exim 4.80) (envelope-from ) id 1fzqk8-0003th-EG; Wed, 12 Sep 2018 08:02:44 +1000 Date: Wed, 12 Sep 2018 08:02:44 +1000 From: Dave Chinner To: Waiman Long Cc: Alexander Viro , Jonathan Corbet , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-doc@vger.kernel.org, "Luis R. Rodriguez" , Kees Cook , Linus Torvalds , Jan Kara , "Paul E. McKenney" , Andrew Morton , Ingo Molnar , Miklos Szeredi , Matthew Wilcox , Larry Woodman , James Bottomley , "Wangkai (Kevin C)" , Michal Hocko Subject: Re: [PATCH v3 2/4] fs: Don't need to put list_lru into its own cacheline Message-ID: <20180911220244.GF5631@dastard> References: <1536693506-11949-1-git-send-email-longman@redhat.com> <1536693506-11949-3-git-send-email-longman@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1536693506-11949-3-git-send-email-longman@redhat.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-doc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org On Tue, Sep 11, 2018 at 03:18:24PM -0400, Waiman Long wrote: > The list_lru structure is essentially just a pointer to a table of > per-node LRU lists. Even if CONFIG_MEMCG_KMEM is defined, the list > field is just used for LRU list registration and shrinker_id is set > at initialization. Those fields won't need to be touched that often. > > So there is no point to make the list_lru structures to sit in their > own cachelines. > > Signed-off-by: Waiman Long Looks fine. Reviewed-by: Dave Chinner -- Dave Chinner david@fromorbit.com