From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5B5B5C54FCB for ; Thu, 23 Apr 2020 22:38:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 350A7214AF for ; Thu, 23 Apr 2020 22:38:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726970AbgDWWie (ORCPT ); Thu, 23 Apr 2020 18:38:34 -0400 Received: from mail105.syd.optusnet.com.au ([211.29.132.249]:32929 "EHLO mail105.syd.optusnet.com.au" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726071AbgDWWie (ORCPT ); Thu, 23 Apr 2020 18:38:34 -0400 Received: from dread.disaster.area (pa49-180-0-232.pa.nsw.optusnet.com.au [49.180.0.232]) by mail105.syd.optusnet.com.au (Postfix) with ESMTPS id 95C4D3A2D1C; Fri, 24 Apr 2020 08:38:30 +1000 (AEST) Received: from dave by dread.disaster.area with local (Exim 4.92.3) (envelope-from ) id 1jRkUH-0006mw-5I; Fri, 24 Apr 2020 08:38:29 +1000 Date: Fri, 24 Apr 2020 08:38:29 +1000 From: Dave Chinner To: ira.weiny@intel.com Cc: linux-kernel@vger.kernel.org, linux-xfs@vger.kernel.org, "Darrick J. Wong" , Al Viro , Jan Kara , Dan Williams , Christoph Hellwig , "Theodore Y. Ts'o" , Jeff Moyer , linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-api@vger.kernel.org Subject: Re: [PATCH V10 09/11] fs: Lift XFS_IDONTCACHE to the VFS layer Message-ID: <20200423223829.GX27860@dread.disaster.area> References: <20200422212102.3757660-1-ira.weiny@intel.com> <20200422212102.3757660-10-ira.weiny@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200422212102.3757660-10-ira.weiny@intel.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-Optus-CM-Score: 0 X-Optus-CM-Analysis: v=2.3 cv=W5xGqiek c=1 sm=1 tr=0 a=XYjVcjsg+1UI/cdbgX7I7g==:117 a=XYjVcjsg+1UI/cdbgX7I7g==:17 a=kj9zAlcOel0A:10 a=cl8xLZFz6L8A:10 a=QyXUC8HyAAAA:8 a=drOt6m5kAAAA:8 a=20KFwNOVAAAA:8 a=7-415B0cAAAA:8 a=jKX92kTyylOnBEM7lDIA:9 a=CjuIK1q_8ugA:10 a=RMMjzBEyIzXRtoq5n5K6:22 a=biEYGPWJfzWAr4FL6Ov7:22 Sender: linux-xfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org On Wed, Apr 22, 2020 at 02:21:00PM -0700, ira.weiny@intel.com wrote: > From: Ira Weiny > > DAX effective mode (S_DAX) changes requires inode eviction. > > XFS has an advisory flag (XFS_IDONTCACHE) to prevent caching of the > inode if no other additional references are taken. We lift this flag to > the VFS layer and change the behavior slightly by allowing the flag to > remain even if multiple references are taken. > > This will expedite the eviction of inodes to change S_DAX. > > Cc: Al Viro > Reviewed-by: Jan Kara > Signed-off-by: Ira Weiny Looks good. Reviewed-by: Dave Chinner -- Dave Chinner david@fromorbit.com