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 945E4C433F5 for ; Mon, 23 May 2022 06:59:43 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id D0D656B0005; Mon, 23 May 2022 02:59:42 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id CBD7F6B0006; Mon, 23 May 2022 02:59:42 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id BAC3B6B0007; Mon, 23 May 2022 02:59:42 -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 A9FCC6B0005 for ; Mon, 23 May 2022 02:59:42 -0400 (EDT) Received: from smtpin30.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id 5B77520E18 for ; Mon, 23 May 2022 06:59:42 +0000 (UTC) X-FDA: 79496107404.30.EE1FA96 Received: from mail-pj1-f53.google.com (mail-pj1-f53.google.com [209.85.216.53]) by imf15.hostedemail.com (Postfix) with ESMTP id 765F0A0003 for ; Mon, 23 May 2022 06:59:23 +0000 (UTC) Received: by mail-pj1-f53.google.com with SMTP id nr2-20020a17090b240200b001df2b1bfc40so16638298pjb.5 for ; Sun, 22 May 2022 23:59:41 -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=5cuFn9MXsbdbOB+pEgR8myl7kvAQ5NrAwXvlsklU44Hcm0cWplc89zH6g+4q4Rqy/X POg2K4SDNc1cgwDlL9vHyIdhkaUZUPoM4utTkq+RxzqJ7NhcNVBFd6BvlRi4zbFFYVmE 4C+XP0R2TpPBrUC4mWsyFu2+VghmJPyRWsom97TNi0BnfhGLAWDnn3gnH9vJ2w3r0NB7 JWXGQsB+ZDfB8z0RiKjcJbWe7/cWfCKx5SQiDBk4uGpKSOrNdCzP+Ce3A6W52Rez8mSI oMbXSUl/32QDu2Ebsj6nqkVcuCTOJr7OIkUt5mR/Fy9V2ByoOlmsbQ65qF5td11FkpIl bQWw== X-Gm-Message-State: AOAM532Q1dYTDrEB2llNrF3ink4SnuZazBQbmH0VW3AYOkNMUImFUlHG h+JY08k9xB7GfrLrT5Z09pnhpCMCvv/Gig== 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 X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 765F0A0003 X-Stat-Signature: 89pmc6ghtq8rzeks6ywcwfojgc578jta X-Rspam-User: Authentication-Results: imf15.hostedemail.com; dkim=pass header.d=chromium.org header.s=google header.b=JrZU0mAt; spf=pass (imf15.hostedemail.com: domain of hsinyi@chromium.org designates 209.85.216.53 as permitted sender) smtp.mailfrom=hsinyi@chromium.org; dmarc=pass (policy=none) header.from=chromium.org X-HE-Tag: 1653289163-767459 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 | 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