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 8A3D1C433F5 for ; Tue, 17 May 2022 08:28:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242933AbiEQI2q (ORCPT ); Tue, 17 May 2022 04:28:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52062 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243431AbiEQI1s (ORCPT ); Tue, 17 May 2022 04:27:48 -0400 Received: from mail-pj1-x1033.google.com (mail-pj1-x1033.google.com [IPv6:2607:f8b0:4864:20::1033]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AA2E54926A for ; Tue, 17 May 2022 01:27:32 -0700 (PDT) Received: by mail-pj1-x1033.google.com with SMTP id x23-20020a17090a789700b001df763d4ed0so1670238pjk.0 for ; Tue, 17 May 2022 01:27:32 -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=OQSG90JJ/COqv9mWqt/xzSdYdvO+juHcEsbjP8h9uxE=; b=XcC1UInh58Jl4PGskeuciU5P2OCq/na/kier41kk7nJnA+K4cEl02/LJnIEGZgSSbw 46fOUd7SGbpqEEc3PJLWzP0fGpCcY9nhGSToswlzecCHtOUtlh3tdUCq9U5gVrQ65glI WbHgy4IsWtvjdPvjNZVgKPhcTQK2xWks8//qk= 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=OQSG90JJ/COqv9mWqt/xzSdYdvO+juHcEsbjP8h9uxE=; b=HInvC7TGOabtKIkuf9y8zJEkbIlL4u8GqWPqg18U435BAi++R/IIINiTrQG/z2TLw4 dCHuIcX1yRjLsDVDUQ3GK7d+O5drmriC/+1NVt9fbdJW/davyBLvnNjChTKzQGMMlsNu 6BgPkeCsSiLWXTfnjHQdneTYtCmMJ79rfC+TtKyIrLVNUpJ4MEe1VinDrwpy/kpZzhWp 1TP4rlRQosQTluACyfL3omxrcAC03bD2cbli+PzEOpVfwSyLWV3cxOw8TWlQU3jBNSt+ eYB+LX5mORr8DEBefIq1Q8hM4ui2hUQlE7rSsRwPepfIAqWAKxu9ETIzCipnOET2mfWw kJ+Q== X-Gm-Message-State: AOAM5337dC9eEJx7ucMuY+VGlxIifsky2ULRezSAlzcPqyqAXoDLyLVE t6wjO6dF88cbApHntPNQ5dhvpw== X-Google-Smtp-Source: ABdhPJzacU5LTBci6tcDoYr6acvV+Apcw/E8uyjMeF6Su/oDlkem6pI1bRcqtwJR4I+BtXjbHyL8Dg== X-Received: by 2002:a17:902:ce87:b0:15e:a619:4294 with SMTP id f7-20020a170902ce8700b0015ea6194294mr21385038plg.157.1652776052116; Tue, 17 May 2022 01:27:32 -0700 (PDT) Received: from hsinyi-z840.tpe.corp.google.com ([2401:fa00:1:10:beb2:ec58:2159:9a33]) by smtp.gmail.com with ESMTPSA id k9-20020a628409000000b0050dc76281d3sm8615083pfd.173.2022.05.17.01.27.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 17 May 2022 01:27:31 -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 v2 0/3] Implement readahead for squashfs Date: Tue, 17 May 2022 16:26:48 +0800 Message-Id: <20220517082650.2005840-1-hsinyi@chromium.org> X-Mailer: git-send-email 2.36.0.550.gb090851708-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 | 77 +++++++++++++++++++++++++++++++++++++++- fs/squashfs/page_actor.h | 41 --------------------- fs/squashfs/super.c | 33 ----------------- 4 files changed, 78 insertions(+), 77 deletions(-) -- 2.36.0.550.gb090851708-goog