From patchwork Thu Dec 29 08:12:51 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sarthak Kukreti X-Patchwork-Id: 13083352 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 8B275C4708D for ; Thu, 29 Dec 2022 08:14:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233044AbiL2IO3 (ORCPT ); Thu, 29 Dec 2022 03:14:29 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37940 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231172AbiL2INp (ORCPT ); Thu, 29 Dec 2022 03:13:45 -0500 Received: from mail-pj1-x1034.google.com (mail-pj1-x1034.google.com [IPv6:2607:f8b0:4864:20::1034]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5A18013D43 for ; Thu, 29 Dec 2022 00:13:13 -0800 (PST) Received: by mail-pj1-x1034.google.com with SMTP id j8-20020a17090a3e0800b00225fdd5007fso8668372pjc.2 for ; Thu, 29 Dec 2022 00:13:13 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Vv5x1KdmMeVtIhlp3zKOKF7sZVF7KRZLRJQbPD3QKT4=; b=T05xc0ET+ovYWIL5pcnCM2gTG/W0v/0OqHvEwFkZjoBf10OqF0ArlagciQllVNzMtn GIrm+w7+DEYMtu0OMfltv5BLAP1xPtYnbtZ4WfOOVblA64a9OsheTZbsH52zOo8QN0Sp hWwPftBw+HDztRSuSQCbaldwNxaNhj1AdbITs= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Vv5x1KdmMeVtIhlp3zKOKF7sZVF7KRZLRJQbPD3QKT4=; b=ejn++P33TMjKg6hTv2nrDXowJAMHT0x9d7m5gBk3l5DOrNSRF/WB91RxUmFWYJ3g2t ECCdv4uI92WPlknbjj5V8cP1QpzupMRi7Pd41QajeYEzTJU8mSb3lLYrxwyiWpxZV5T2 E0OYOzmJok+M0u+X4TRegmn27UXYDDdUvFGRNK/S55GVvCQxhxN225OdWAW3XsnIlyMG 6fNcJ+tv9FlVbVNNv5BoqxT9y3vuWT2M9X6TZR87whELbMG9L5vZl3/gN5oKHt4ARqhP 36VIXYHZ9IJU9VU82qmc1V9y6RyKxUrKSqOlajCtRNqcojkZMad2Mcp+pMvmwH87oFLv XoiQ== X-Gm-Message-State: AFqh2kpllY9nZfNMc9M73T4NOupYCjdoq5YOpohaZ7foPkuL6MXRKmf9 lDevsDDjq4sF7Noo14ne1DJfxQ== X-Google-Smtp-Source: AMrXdXvrTl4SO8Hr42En8z77cNqZKNC6eJ1qGCmNwbui5VQ51uN9dxzll3B3KUp7znSacUHIozLKhA== X-Received: by 2002:a17:902:a70c:b0:189:dcc3:e4a1 with SMTP id w12-20020a170902a70c00b00189dcc3e4a1mr28589601plq.9.1672301592863; Thu, 29 Dec 2022 00:13:12 -0800 (PST) Received: from sarthakkukreti-glaptop.hsd1.ca.comcast.net ([2601:647:4200:b5b0:75ff:1277:3d7b:d67a]) by smtp.gmail.com with ESMTPSA id 12-20020a170902e9cc00b00192820d00d0sm6496325plk.120.2022.12.29.00.13.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 29 Dec 2022 00:13:12 -0800 (PST) From: Sarthak Kukreti To: sarthakkukreti@google.com, dm-devel@redhat.com, linux-block@vger.kernel.org, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org Cc: Jens Axboe , "Michael S. Tsirkin" , Jason Wang , Stefan Hajnoczi , Alasdair Kergon , Mike Snitzer , Christoph Hellwig , Brian Foster , Theodore Ts'o , Andreas Dilger , Bart Van Assche , Daniil Lunev , "Darrick J. Wong" Subject: [PATCH v2 6/7] ext4: Add mount option for provisioning blocks during allocations Date: Thu, 29 Dec 2022 00:12:51 -0800 Message-Id: <20221229081252.452240-7-sarthakkukreti@chromium.org> X-Mailer: git-send-email 2.39.0.314.g84b9a713c41-goog In-Reply-To: <20221229081252.452240-1-sarthakkukreti@chromium.org> References: <20221229081252.452240-1-sarthakkukreti@chromium.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Add a mount option that sets the default provisioning mode for all files within the filesystem. Signed-off-by: Sarthak Kukreti --- fs/ext4/ext4.h | 1 + fs/ext4/extents.c | 7 +++++++ fs/ext4/super.c | 7 +++++++ 3 files changed, 15 insertions(+) diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 49832e90b62f..29cab2e2ea20 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -1269,6 +1269,7 @@ struct ext4_inode_info { #define EXT4_MOUNT2_MB_OPTIMIZE_SCAN 0x00000080 /* Optimize group * scanning in mballoc */ +#define EXT4_MOUNT2_PROVISION 0x00000100 /* Provision while allocating file blocks */ #define clear_opt(sb, opt) EXT4_SB(sb)->s_mount_opt &= \ ~EXT4_MOUNT_##opt diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 2e64a9211792..a73f44264fe2 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -4441,6 +4441,13 @@ static int ext4_alloc_file_blocks(struct file *file, ext4_lblk_t offset, unsigned int credits; loff_t epos; + /* + * Attempt to provision file blocks if the mount is mounted with + * provision. + */ + if (test_opt2(inode->i_sb, PROVISION)) + flags |= EXT4_GET_BLOCKS_PROVISION; + BUG_ON(!ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)); map.m_lblk = offset; map.m_len = len; diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 260c1b3e3ef2..5bc376f6a6f0 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1591,6 +1591,7 @@ enum { Opt_max_dir_size_kb, Opt_nojournal_checksum, Opt_nombcache, Opt_no_prefetch_block_bitmaps, Opt_mb_optimize_scan, Opt_errors, Opt_data, Opt_data_err, Opt_jqfmt, Opt_dax_type, + Opt_provision, Opt_noprovision, #ifdef CONFIG_EXT4_DEBUG Opt_fc_debug_max_replay, Opt_fc_debug_force #endif @@ -1737,6 +1738,8 @@ static const struct fs_parameter_spec ext4_param_specs[] = { fsparam_flag ("reservation", Opt_removed), /* mount option from ext2/3 */ fsparam_flag ("noreservation", Opt_removed), /* mount option from ext2/3 */ fsparam_u32 ("journal", Opt_removed), /* mount option from ext2/3 */ + fsparam_flag ("provision", Opt_provision), + fsparam_flag ("noprovision", Opt_noprovision), {} }; @@ -1826,6 +1829,8 @@ static const struct mount_opts { {Opt_nombcache, EXT4_MOUNT_NO_MBCACHE, MOPT_SET}, {Opt_no_prefetch_block_bitmaps, EXT4_MOUNT_NO_PREFETCH_BLOCK_BITMAPS, MOPT_SET}, + {Opt_provision, EXT4_MOUNT2_PROVISION, MOPT_SET | MOPT_2}, + {Opt_noprovision, EXT4_MOUNT2_PROVISION, MOPT_CLEAR | MOPT_2}, #ifdef CONFIG_EXT4_DEBUG {Opt_fc_debug_force, EXT4_MOUNT2_JOURNAL_FAST_COMMIT, MOPT_SET | MOPT_2 | MOPT_EXT4_ONLY}, @@ -2977,6 +2982,8 @@ static int _ext4_show_options(struct seq_file *seq, struct super_block *sb, SEQ_OPTS_PUTS("dax=never"); } else if (test_opt2(sb, DAX_INODE)) { SEQ_OPTS_PUTS("dax=inode"); + } else if (test_opt2(sb, PROVISION)) { + SEQ_OPTS_PUTS("provision"); } if (sbi->s_groups_count >= MB_DEFAULT_LINEAR_SCAN_THRESHOLD &&