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 1E79DC433F5 for ; Wed, 1 Jun 2022 10:39:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1352122AbiFAKjk (ORCPT ); Wed, 1 Jun 2022 06:39:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43616 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347833AbiFAKja (ORCPT ); Wed, 1 Jun 2022 06:39:30 -0400 Received: from mail-pj1-x1030.google.com (mail-pj1-x1030.google.com [IPv6:2607:f8b0:4864:20::1030]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C90907CDCC for ; Wed, 1 Jun 2022 03:39:28 -0700 (PDT) Received: by mail-pj1-x1030.google.com with SMTP id a10so1637181pju.3 for ; Wed, 01 Jun 2022 03:39:28 -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=iyhf6brMfc11D4/C56YiSyoAx+hrLfJS2MsKHkeQdSU=; b=edQmDBvTOZnRp+S7U+hlShKZoD5of6RQ9ZKELHbSmIOTHvZXpjms28A8imaluJwyVZ XlSDbNQslUnlxjv8JGlU0NyJ+wI1qa4uqtvq6SU6fKonDTYlt4Ccd6Oxg23l1Ogh8sqL Puj21O0B3ZQJVV96/+itll3gIkfOy6v5gwdd8= 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=iyhf6brMfc11D4/C56YiSyoAx+hrLfJS2MsKHkeQdSU=; b=evKLLNyX2dXnK8DABDSTReddMpSdEk2jxK2zBsV0r+lwKnUpHaSX85DhLxVxK6n0b6 PQUJ02FbfQFr5rjOZF8Mztjl3mbilRzt4mI3mlHvYo9OmQoG3SD8PKd4qobKOVnSGlV5 85aCzPKCmzRguiu+nmryTpQ6fG0JiNq3R3dkwJBEIcYHSNR5uJwFpH/twWsYldAQzRfn KshWoge9U7XAdnxohfxVqZ9undQfWrZdS0HnqbmB8sDbZrhPqAAxhFXtZVfp+t1TS5PU 1I91QyLmP0d6djr5c5OBDwa2H4p1t4YYzi2NkkTIiaLKLJXcyHACwnO9kVI9b4nZtgxO nSbA== X-Gm-Message-State: AOAM533RgTS6oMUtwgsVKBWnb0/xJwu4bTvELNp64RgTvNcnbzDHL8Et 5cXFqul0xWX38teMcV6PvmQZfw== X-Google-Smtp-Source: ABdhPJxnq7OcG4oa1RcNJb0F7BVW1cIUZX5bmyuaYzhw8LuQyLX+dFmOGjL6+njBxNIEnRHiXx0mzw== X-Received: by 2002:a17:902:ba97:b0:161:524d:5adb with SMTP id k23-20020a170902ba9700b00161524d5adbmr64905940pls.126.1654079968231; Wed, 01 Jun 2022 03:39:28 -0700 (PDT) Received: from hsinyi-z840.tpe.corp.google.com ([2401:fa00:1:10:dc30:e75c:ae95:f2d6]) by smtp.gmail.com with ESMTPSA id i9-20020a17090332c900b00163bfaf0b17sm1183867plr.233.2022.06.01.03.39.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 01 Jun 2022 03:39:27 -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 v4 0/3] Implement readahead for squashfs Date: Wed, 1 Jun 2022 18:39:19 +0800 Message-Id: <20220601103922.1338320-1-hsinyi@chromium.org> X-Mailer: git-send-email 2.36.1.255.ge46751e96f-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 | 97 +++++++++++++++++++++++++++++++++++++++- fs/squashfs/page_actor.h | 41 ----------------- fs/squashfs/super.c | 33 -------------- 4 files changed, 98 insertions(+), 77 deletions(-) -- 2.36.1.255.ge46751e96f-goog