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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9F4EDC433F5 for ; Mon, 23 May 2022 07:21:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229618AbiEWHVa (ORCPT ); Mon, 23 May 2022 03:21:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59288 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230009AbiEWHUb (ORCPT ); Mon, 23 May 2022 03:20:31 -0400 Received: from mail-vk1-xa2b.google.com (mail-vk1-xa2b.google.com [IPv6:2607:f8b0:4864:20::a2b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E4183A0075 for ; Mon, 23 May 2022 00:12:29 -0700 (PDT) Received: by mail-vk1-xa2b.google.com with SMTP id e7so6674001vkh.2 for ; Mon, 23 May 2022 00:12:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=ivbtveK1b9xDXzTHiB1+vrFrI8F8zLJqf42Jq8NTt84=; b=JrZU0mAtWhyHtnGWfcq4jisbYZkDYfFSSaRvW7hUCBHB5+ZPnkL8XNaBlBWSPG/xHI mMEVGvxKf3niaQ4D8oZgj3wzKbz+5/rwz5eyALJmx7eG0kQCD/9RgoZ2mTWfN6QcdKdj Do+KMx/FsUkhPKjbh58S9261HdHS7Mf3Zxa6I= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=ivbtveK1b9xDXzTHiB1+vrFrI8F8zLJqf42Jq8NTt84=; b=L2IT+R3g9me/r3952zpx4kuebOT4u0d+clNjtewsWISMMFYopX2LBapzDhqMD6ZTws 0/29q40200ruuHktS60g2YOsOxOQ5m+yX58CxDlX+F1PGVA5OqFiSUySOl7TBilyXJ0Q 3P1Eni3ilEJSLLe+Gzw/qOSHcJoml7OOzFC2ZePIFGtGwn6fJeeKnyy7+JZpBSXtlhdG kcKImnFCIEWSI0Gohp9KtcxGdZYQX7OXIvNRG7XhlapL5PL5hERzv0vq7V2yaNrBI+BX tMwQZqaHO1t6jzTMLp920ntDtB2HtMpFCQavmmKz2DrTTW0XqmbOpK88MKyGkhGi/KhQ HxAw== X-Gm-Message-State: AOAM533JGTIVYihG2H9U5ceuy9ZgCewYAy0Vhq6Ba/nerQ6rRFjLXrif 4oz3bdROpnaVXFq7R6SXQCfsoNDVUwyWuw== X-Google-Smtp-Source: ABdhPJyT2PNg67dmHFmoI/Hj5YZVhAGhIMtKKzgeiGQjxfk1/InZ7XWSgzgldrF617vESUKPBhniDQ== X-Received: by 2002:a17:902:a50f:b0:162:28c6:bfac with SMTP id s15-20020a170902a50f00b0016228c6bfacmr2850974plq.99.1653289180789; Sun, 22 May 2022 23:59:40 -0700 (PDT) Received: from hsinyi-z840.tpe.corp.google.com ([2401:fa00:1:10:76d5:494d:1690:d003]) by smtp.gmail.com with ESMTPSA id m2-20020a629402000000b005180f4733a8sm3099527pfe.106.2022.05.22.23.59.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 22 May 2022 23:59:39 -0700 (PDT) From: Hsin-Yi Wang To: Phillip Lougher , Matthew Wilcox , Xiongwei Song Cc: Zheng Liang , Zhang Yi , Hou Tao , Miao Xie , Andrew Morton , "linux-mm @ kvack . org" , "squashfs-devel @ lists . sourceforge . net" , linux-kernel@vger.kernel.org Subject: [PATCH v3 0/3] Implement readahead for squashfs Date: Mon, 23 May 2022 14:59:07 +0800 Message-Id: <20220523065909.883444-1-hsinyi@chromium.org> X-Mailer: git-send-email 2.36.1.124.g0e6072fb45-goog MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit c1f6925e1091("mm: put readahead pages in cache earlier") requires fs to implement readahead callback. Otherwise there will be a performance regression. Commit 9eec1d897139("squashfs: provide backing_dev_info in order to disable read-ahead") mitigates the performance drop issue for squashfs by closing readahead for it. This series implements readahead callback for squashfs. The previous discussion are in [1] and [2]. [1] https://lore.kernel.org/all/CAJMQK-g9G6KQmH-V=BRGX0swZji9Wxe_2c7ht-MMAapdFy2pXw@mail.gmail.com/T/ [2] https://lore.kernel.org/linux-mm/Yn5Yij9pRPCzDozt@casper.infradead.org/t/#m4af4473b94f98a4996cb11756b633a07e5e059d1 Hsin-Yi Wang (2): Revert "squashfs: provide backing_dev_info in order to disable read-ahead" squashfs: implement readahead Phillip Lougher (1): squashfs: always build "file direct" version of page actor fs/squashfs/Makefile | 4 +- fs/squashfs/file.c | 91 +++++++++++++++++++++++++++++++++++++++- fs/squashfs/page_actor.h | 41 ------------------ fs/squashfs/super.c | 33 --------------- 4 files changed, 92 insertions(+), 77 deletions(-) -- 2.36.1.124.g0e6072fb45-goog