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=-8.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS 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 3545EC432BE for ; Wed, 25 Aug 2021 15:09:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1B1DA61100 for ; Wed, 25 Aug 2021 15:09:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231995AbhHYPK1 (ORCPT ); Wed, 25 Aug 2021 11:10:27 -0400 Received: from outgoing-auth-1.mit.edu ([18.9.28.11]:43813 "EHLO outgoing.mit.edu" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S240864AbhHYPK0 (ORCPT ); Wed, 25 Aug 2021 11:10:26 -0400 Received: from cwcc.thunk.org (pool-72-74-133-215.bstnma.fios.verizon.net [72.74.133.215]) (authenticated bits=0) (User authenticated as tytso@ATHENA.MIT.EDU) by outgoing.mit.edu (8.14.7/8.12.4) with ESMTP id 17PF9MnV029505 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 25 Aug 2021 11:09:23 -0400 Received: by cwcc.thunk.org (Postfix, from userid 15806) id 6834A15C3DBB; Wed, 25 Aug 2021 11:09:22 -0400 (EDT) Date: Wed, 25 Aug 2021 11:09:22 -0400 From: "Theodore Ts'o" To: Alex Sierra Cc: akpm@linux-foundation.org, Felix.Kuehling@amd.com, linux-mm@kvack.org, rcampbell@nvidia.com, linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, hch@lst.de, jgg@nvidia.com, jglisse@redhat.com Subject: Re: [PATCH v1 01/14] ext4/xfs: add page refcount helper Message-ID: References: <20210825034828.12927-1-alex.sierra@amd.com> <20210825034828.12927-2-alex.sierra@amd.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210825034828.12927-2-alex.sierra@amd.com> Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org On Tue, Aug 24, 2021 at 10:48:15PM -0500, Alex Sierra wrote: > From: Ralph Campbell > > There are several places where ZONE_DEVICE struct pages assume a reference > count == 1 means the page is idle and free. Instead of open coding this, > add a helper function to hide this detail. > > Signed-off-by: Ralph Campbell > Signed-off-by: Alex Sierra > Reviewed-by: Christoph Hellwig Acked-by: Theodore Ts'o