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=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no 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 A096FC49EA6 for ; Thu, 24 Jun 2021 15:58:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8A11A6135C for ; Thu, 24 Jun 2021 15:58:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232443AbhFXQAr (ORCPT ); Thu, 24 Jun 2021 12:00:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36598 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232348AbhFXQAp (ORCPT ); Thu, 24 Jun 2021 12:00:45 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C42C4C061574; Thu, 24 Jun 2021 08:58:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=5SsNt/I69pkIIwALnIwaHK6F5Hk6SuiLKMVHSsDe2Xw=; b=YXQBLqNPNqi7Xp4GbmtgEOT+hv Az/Yb5b1ypKxI6nTu7z8z286kZl9KlziYJWdBfY+IApxJMjpuYPZDYvCFkRhMTZ1f3YApu8FhUgGT bM9DRQ5M+oHa/CPr8yCC96MMEquryO1rzogBU7mvjhRfWjasDBH7N4ZrPGuSITvPsdCApULKcDKhp 1m2Mt7355XSegr/FwbJ7xrvE4gquBnpUsQR2vJXUj/BI/p+xcZCbLdWOh3penEtepM978zTGso/1T wgrgyiQMMZqRK2pCZ3feUXi3AhQejuRDScpVhdudFjGU5tDR6D8X7cirYiWuA+sfHpGCcEKEfD2P/ 9YTFeHsg==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1lwRjN-00GjtA-Ty; Thu, 24 Jun 2021 15:57:56 +0000 Date: Thu, 24 Jun 2021 16:57:29 +0100 From: Matthew Wilcox To: Christoph Hellwig Cc: akpm@linux-foundation.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 05/46] mm: Add arch_make_folio_accessible() Message-ID: References: <20210622121551.3398730-1-willy@infradead.org> <20210622121551.3398730-6-willy@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jun 23, 2021 at 10:00:37AM +0200, Christoph Hellwig wrote: > On Tue, Jun 22, 2021 at 01:15:10PM +0100, Matthew Wilcox (Oracle) wrote: > > As a default implementation, call arch_make_page_accessible n times. > > If an architecture can do better, it can override this. > > > > Also move the default implementation of arch_make_page_accessible() > > from gfp.h to mm.h. > > Can we wait with introducing arch hooks until we have an actual user > lined up? This one gets used in __folio_end_writeback() which is patch 24 in this series.