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 A3EC4C433EF for ; Wed, 2 Mar 2022 17:18:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243692AbiCBRTW (ORCPT ); Wed, 2 Mar 2022 12:19:22 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45006 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234309AbiCBRTV (ORCPT ); Wed, 2 Mar 2022 12:19:21 -0500 Received: from mail-pg1-x530.google.com (mail-pg1-x530.google.com [IPv6:2607:f8b0:4864:20::530]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2E23FC8FB1; Wed, 2 Mar 2022 09:18:37 -0800 (PST) Received: by mail-pg1-x530.google.com with SMTP id 12so2223951pgd.0; Wed, 02 Mar 2022 09:18:37 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=wH+95IPbGU7LsO+nMed5iXzS0Pw2Zt/UPlRhOF3gCdA=; b=M8852nDZ1BX27cpQ3GBheX66KgLAxHQ2VbwYXmnN/wc00WoT/ShdkUbs4JmmPfQXBc IRj444RvI2d1RIP1sijylV3cK48mstE+tFzjLNADlSjmjPMGI5r77Pit1CJmPnwRwBpL pDTCIfUpSweQMwKO2gpix67Grp64NkH3Fc4hC+bCiRD9Ao0T6JfsKAqtUoncp3/NWzJl Rn2o+D1uMSzY4SbYLyECFAiUP/5ByvEzJtAUMNHt2h/5gp4VbhKa0tpTJBxlYv5IYZf/ 9MeckTiYKNIS/Fj1aaG3eFeGePDqLn7UNkQoh4RFTx5xXT/R517HvFnqqDJBjCeG6MER kD4Q== 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=wH+95IPbGU7LsO+nMed5iXzS0Pw2Zt/UPlRhOF3gCdA=; b=7qw07SUWw74pt3vnorcOkd8CPk4Bu4TZZV2erBivdEFQ4cZE05SpRlBvtFBGWbFysz TUn8xqfAmW+PSTSRvnGmlZ/IjuId0MWgdEq9A+/hXk+jkmJapwSGgq4HYx6W+zR0g0co 13wtpqzWG7cdTbt1l9wfJgCxgr3v0yt5pDGIWvGj+Fi4c8x2ox5kXgPXj7rpGm5RAvXY xmxHVW+IpBFbpifMih3z/vc8wWnFypQKQbLolOqKrry9BRSFnbWd45mdJOYfVeTaaRf8 zkhYJyYBK+1LT3krt5bkHmu9Ea1mg78AwJVI9QHLnxDJJcIMeY5JRlli7w2yOMSS/C2H nkFA== X-Gm-Message-State: AOAM531lrFC/NDp2/I2+V7u9emsjYYUYwBObH6SSJ6T4gSjokmB4zRmN ajToiA2n9UDqSm90eDQMWAQ= X-Google-Smtp-Source: ABdhPJw/Vg1GZgRtifAmdYbWBTQSaZflWGmOwq3YAOBtD53njeZS72iIwbBx0Yl8ByT/lN86yhMrBQ== X-Received: by 2002:a05:6a00:b52:b0:4f0:ff67:413 with SMTP id p18-20020a056a000b5200b004f0ff670413mr33920452pfo.61.1646241516606; Wed, 02 Mar 2022 09:18:36 -0800 (PST) Received: from kvigor-fedora-PF399REY.thefacebook.com ([2620:10d:c090:400::5:d6ec]) by smtp.gmail.com with ESMTPSA id c63-20020a624e42000000b004f414f0a391sm10339965pfb.79.2022.03.02.09.18.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 02 Mar 2022 09:18:36 -0800 (PST) From: Kevin Vigor To: miklos@szeredi.hu Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Kevin Vigor Subject: [RFC PATCH 0/1] FUSE: allow drivers to increase readahead. Date: Wed, 2 Mar 2022 10:18:15 -0700 Message-Id: <20220302171816.1170782-1-kvigor@gmail.com> X-Mailer: git-send-email 2.35.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Summary: Allow FUSE drivers to increase readahead setting. Details: FUSE drivers can set a max_readahead value in the fuse_init_out value. However, this value can currently only decrease the readahead setting from the default, which is set to VM_READAHEAD_PAGES in bdi_alloc(). Add a flag which causes the kernel driver to accept whatever max_readahead value the user provides in fuse_init_out. Note that read_ahead_kb_store() similarly allows users to set arbitrary ra_pages values. Kevin Vigor (1): FUSE: Add FUSE_TRUST_MAX_RA flag enabling readahead settings >128KB. fs/fuse/inode.c | 8 ++++++-- include/uapi/linux/fuse.h | 3 +++ 2 files changed, 9 insertions(+), 2 deletions(-) -- 2.33.1