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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 118B1C43334 for ; Mon, 6 Jun 2022 15:03:13 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 71E206B0071; Mon, 6 Jun 2022 11:03:13 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 6C98C6B0073; Mon, 6 Jun 2022 11:03:13 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 544D68D0001; Mon, 6 Jun 2022 11:03:13 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id 3D9EE6B0071 for ; Mon, 6 Jun 2022 11:03:13 -0400 (EDT) Received: from smtpin18.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay02.hostedemail.com (Postfix) with ESMTP id 00B603405E for ; Mon, 6 Jun 2022 15:03:12 +0000 (UTC) X-FDA: 79548129066.18.F8F9669 Received: from mail-pj1-f48.google.com (mail-pj1-f48.google.com [209.85.216.48]) by imf01.hostedemail.com (Postfix) with ESMTP id A43034000D for ; Mon, 6 Jun 2022 15:03:02 +0000 (UTC) Received: by mail-pj1-f48.google.com with SMTP id e9so2493035pju.5 for ; Mon, 06 Jun 2022 08:03:12 -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=u/qVH/JzAtOjd7wOJnhVf/fg1Cz1T/bObRHmqtOqxLs=; b=VP83WIlxTfcsIiCwnGLyHEwOdzkMAjiNd35I7TWu2jZfL2DSyQH8ta3ZleGMiyIkm2 XBTDF0VeYVsWxbwpO5zhR2Y4lj7wL+5vIUR1mLd5U0p45yg9qOjr7Nvfnmp7ubjErJu0 NHQWV934SSNf836D85YO6qS/dPtd533HrLp9s= 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=u/qVH/JzAtOjd7wOJnhVf/fg1Cz1T/bObRHmqtOqxLs=; b=ucXwDsIhDJir1E6Clz42lzGqxhE+sf6b1Bxa6ndqvEZK3vJHk1zrX4u2UECHf2dnvJ XREQBHH7/OU3t/4z9xOzB4Oe2QQiVgRDQ6Ugo67OWHyjJq/rkFwppFjoh2j4STvNEX6A dF2cD/MM60DDO2NLQ26OYEGO3+NE40ixFyOVmS95Frtd3E1FH4Crq482qwLZMQ5f49Lb RU3AxlFQmYPWvTcdoXaB39Lo1hzTvlJr+G/GYFft2MkppFFzDtSlImpClQUL7lL9Z+yv Qah3M4XsjBK3TnXB1pLSfTjFpihjI7svznucASDkyvtH28cn1MxjZOZzvx8hLD2R9i4u 42Qw== X-Gm-Message-State: AOAM53013KqnviEL7biUNfyNVPw7nqgHnqmlid5esDP5m6VrlMuWcEZN VuVGOg4ABql4N9qlzEZFQ5dg1A== X-Google-Smtp-Source: ABdhPJx8aTAJm37UgychcNCv2OMoouLeNCV8OtVUfCNyl2p0kiMAU53Zsa1DMJLOqKWibSVfBx3iTw== X-Received: by 2002:a17:90b:4c06:b0:1e3:17fa:e387 with SMTP id na6-20020a17090b4c0600b001e317fae387mr41330610pjb.53.1654527791257; Mon, 06 Jun 2022 08:03:11 -0700 (PDT) Received: from hsinyi-z840.tpe.corp.google.com ([2401:fa00:1:10:a0a:5e4:e24:c8c4]) by smtp.gmail.com with ESMTPSA id k13-20020aa7998d000000b0050dc76281ecsm7468864pfh.198.2022.06.06.08.03.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 06 Jun 2022 08:03:10 -0700 (PDT) From: Hsin-Yi Wang To: Phillip Lougher , Matthew Wilcox , Xiongwei Song , Marek Szyprowski , Andrew Morton Cc: Zheng Liang , Zhang Yi , Hou Tao , Miao Xie , "linux-mm @ kvack . org" , "squashfs-devel @ lists . sourceforge . net" , linux-kernel@vger.kernel.org Subject: [PATCH v5 0/3] Implement readahead for squashfs Date: Mon, 6 Jun 2022 23:03:02 +0800 Message-Id: <20220606150305.1883410-1-hsinyi@chromium.org> X-Mailer: git-send-email 2.36.1.255.ge46751e96f-goog MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: A43034000D X-Stat-Signature: 6jaskk45hww38rnsg5cb1snd9kjo847p X-Rspam-User: Authentication-Results: imf01.hostedemail.com; dkim=pass header.d=chromium.org header.s=google header.b=VP83WIlx; spf=pass (imf01.hostedemail.com: domain of hsinyi@chromium.org designates 209.85.216.48 as permitted sender) smtp.mailfrom=hsinyi@chromium.org; dmarc=pass (policy=none) header.from=chromium.org X-HE-Tag: 1654527782-546080 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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 | 124 ++++++++++++++++++++++++++++++++++++++- fs/squashfs/page_actor.h | 41 ------------- fs/squashfs/super.c | 33 ----------- 4 files changed, 125 insertions(+), 77 deletions(-) -- 2.36.1.255.ge46751e96f-goog