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=-0.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, 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 64E50C3F68F for ; Sat, 15 Feb 2020 01:15:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 31B4C207FF for ; Sat, 15 Feb 2020 01:15:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="pp4+jYrd" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727944AbgBOBPx (ORCPT ); Fri, 14 Feb 2020 20:15:53 -0500 Received: from bombadil.infradead.org ([198.137.202.133]:51290 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727602AbgBOBPx (ORCPT ); Fri, 14 Feb 2020 20:15:53 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.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=rLBAYvHDyQG068qFXc4PKikpMZL0O5lvrEMnkVr84hY=; b=pp4+jYrdtIiCu1ZmQd3UA6AYr/ 85A+NhPrb4RLR40lY3uBj4FXFTAWs54cubURwUY781EoXTIC1BHmzzNCBvBY8CryBQxMU/K9kCyDD Uej9VEruUNuHLfKPM4kfSaYvl7cRuRpvE6a4DUQXDHXn67rTy5ieMKlxLHoaPREJTum8bIQ9MN9Gw zdza5RTyE51eZi3yeNdHM+vbtFO0NAVQHI+/F7pxpuo7utWxpPvSsEQWVwOfY7b3Djjfu7uYZbJKq pEcZMax/EA/FGJvJyodBK0tcSq1rmhd9c8O3RFfEaCuHnm/yRy6hPamomhAD6zwSpAIRbrf8oTm28 VPquc2zA==; Received: from willy by bombadil.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1j2m3k-00083J-V5; Sat, 15 Feb 2020 01:15:52 +0000 Date: Fri, 14 Feb 2020 17:15:52 -0800 From: Matthew Wilcox To: John Hubbard Cc: linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, ocfs2-devel@oss.oracle.com, linux-xfs@vger.kernel.org Subject: Re: [PATCH v5 03/13] mm: Put readahead pages in cache earlier Message-ID: <20200215011552.GE7778@bombadil.infradead.org> References: <20200211010348.6872-1-willy@infradead.org> <20200211010348.6872-4-willy@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On Thu, Feb 13, 2020 at 07:36:38PM -0800, John Hubbard wrote: > I see two distinct things happening in this patch, and I think they want to each be > in their own patch: > > 1) A significant refactoring of the page loop, and > > 2) Changing the place where the page is added to the page cache. (Only this one is > mentioned in the commit description.) > > We'll be more likely to spot any errors if these are teased apart. Thanks. I ended up splitting this patch into three, each hopefully easier to understand.