From patchwork Fri Jan 22 06:21:23 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Naohiro Aota X-Patchwork-Id: 12038465 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 965FFC433E0 for ; Fri, 22 Jan 2021 06:27:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4BA33235FF for ; Fri, 22 Jan 2021 06:27:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726958AbhAVG1o (ORCPT ); Fri, 22 Jan 2021 01:27:44 -0500 Received: from esa1.hgst.iphmx.com ([68.232.141.245]:51031 "EHLO esa1.hgst.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726877AbhAVG0d (ORCPT ); Fri, 22 Jan 2021 01:26:33 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1611296792; x=1642832792; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=m8HW66vMHAbw2Hs4DnX6UYtfb9TX4vO8e6FqIcm3MCc=; b=G5E7zCGNVo8Cr4YX6A8nZa+fQ0B7LBJatARk+MULL7nNeZiI2aXZDyIF kJMX6NqsFc9ejXSeY7qZevSASq20OduhewuOlaRmluubRb01Ov/yVcXU+ bjIMUSuV0+IIB0aHcTjAiU0tFomJ3OMpVf8TbXO8HjtkSB69DR3nC6pG2 NwH6A8nsH4XOl591Tz68SYhliLhPGnUNZUbu8iTS1pm1JADORjABUvmhC KkoCzlVznYXwv+lPW2iwPfohR0I11gb8HWwDFClHw/evkZBODtXo11j4L 0NSd0oyFedDz/cNQ3s5pUQ8FvtX/98jwGraJdGaUlIyzqDsnF0QXnPcds Q==; IronPort-SDR: I0hawge27db28yCblhy4gzDPw3+pZ5RzWlGabd/7Yux8DCL6EDkaUxY6p3mjsKqjRVB3QFTHex gP/u/iIKz+aIksJD0a+Try4hopEdCzSAjiCNU0TxknBD/VSOKN668U3OM5QouD3qgwOGz9RjnF qQDFcCCeL5xbF8pjFi7S7PLuD8NA0NFpyqg/ayyV/0IBYncCGRgvKp7tiPaO8i0317sbkueCOH mkYhb8QgWLY/RVOkGMCFg+c4V+WoLqrD9sAQwkUMbdI4Nm/aIQGTisUN8d13k+x7a1RFEEg8c1 mzQ= X-IronPort-AV: E=Sophos;i="5.79,365,1602518400"; d="scan'208";a="268392014" Received: from uls-op-cesaip02.wdc.com (HELO uls-op-cesaep02.wdc.com) ([199.255.45.15]) by ob1.hgst.iphmx.com with ESMTP; 22 Jan 2021 14:22:59 +0800 IronPort-SDR: mCA0vNFfknlbxOEP12l+0wAehAnOFWHqIGJ5l4ECklJVYR9caWO7aorI27Cz+BkEIQAkhUmIOP JtaUNFRerHi7gog7HiE+q6GmYoJXkWfwnYUtP+guFKg/4emq7mCu1z9ZznyYvDdjA+eMJjGaAV lNnqI/UKz3BtSWzV+IgNGl9xZvtaXhUpM4eHM40YqM+BWZb5Pr+6oYAQMFsT2YTuzap+weVu2u YB6zpmzoNmr36d/MoOBAAmFmAMqCbJ4KtlXPUEFqe3wOHIxNS/t18HyxLIIsvViCfsHaruX952 ssLJHw4c4thpM+H5TmFSWx5i Received: from uls-op-cesaip02.wdc.com ([10.248.3.37]) by uls-op-cesaep02.wdc.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Jan 2021 22:05:31 -0800 IronPort-SDR: lNlzhjCuNG+Q/zVK6J2NnZmM1qRYkiuUTkdIAvKps8xcEi2L937VlKvNUPy50ogCD/vfwqEBUA cdpew1pfsWCJwTpF674uWUmHYtAqcB8m7WQhtO0VHZVxZK6EdhddDWEbxlZ49k+iYFTVABAVVX 18rREj8w19uf0ZFUMmx3KghKsqI1o3i5aiWN/cxtLoV2ccKveO0aS8WlgRzPA9KTtXdK91YOCt GzqrQB7NG0fyMOSOgNh3CzF94zvcRinw4lA7jKslnp8dNnTAjqFuinZ1a34WQhY6ZR/J4s+7mZ 6VE= WDCIronportException: Internal Received: from naota.dhcp.fujisawa.hgst.com ([10.149.52.155]) by uls-op-cesaip02.wdc.com with ESMTP; 21 Jan 2021 22:22:57 -0800 From: Naohiro Aota To: linux-btrfs@vger.kernel.org, dsterba@suse.com Cc: hare@suse.com, linux-fsdevel@vger.kernel.org, Jens Axboe , Christoph Hellwig , "Darrick J. Wong" , Johannes Thumshirn , Naohiro Aota Subject: [PATCH v13 23/42] btrfs: check if bio spans across an ordered extent Date: Fri, 22 Jan 2021 15:21:23 +0900 Message-Id: X-Mailer: git-send-email 2.27.0 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org From: Johannes Thumshirn To ensure that an ordered extent maps to a contiguous region on disk, we need to maintain a "one bio == one ordered extent" rule. This commit ensures that constructing bio does not span across an ordered extent. Signed-off-by: Johannes Thumshirn Signed-off-by: Naohiro Aota Reviewed-by: Josef Bacik --- fs/btrfs/ctree.h | 2 ++ fs/btrfs/extent_io.c | 9 +++++++-- fs/btrfs/inode.c | 29 +++++++++++++++++++++++++++++ 3 files changed, 38 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 4b2e19daed40..1b6f66575471 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -3116,6 +3116,8 @@ void btrfs_split_delalloc_extent(struct inode *inode, struct extent_state *orig, u64 split); int btrfs_bio_fits_in_stripe(struct page *page, size_t size, struct bio *bio, unsigned long bio_flags); +bool btrfs_bio_fits_in_ordered_extent(struct page *page, struct bio *bio, + unsigned int size); void btrfs_set_range_writeback(struct extent_io_tree *tree, u64 start, u64 end); vm_fault_t btrfs_page_mkwrite(struct vm_fault *vmf); int btrfs_readpage(struct file *file, struct page *page); diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 9c8faaf260ee..b9fefa624760 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -3097,10 +3097,15 @@ static bool btrfs_bio_add_page(struct bio *bio, struct page *page, if (btrfs_bio_fits_in_stripe(page, size, bio, bio_flags)) return false; - if (bio_op(bio) == REQ_OP_ZONE_APPEND) + if (bio_op(bio) == REQ_OP_ZONE_APPEND) { + struct page *first_page = bio_first_bvec_all(bio)->bv_page; + + if (!btrfs_bio_fits_in_ordered_extent(first_page, bio, size)) + return false; ret = bio_add_zone_append_page(bio, page, size, pg_offset); - else + } else { ret = bio_add_page(bio, page, size, pg_offset); + } return ret == size; } diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index ab97d4349515..286eee122657 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -2217,6 +2217,35 @@ static blk_status_t btrfs_submit_bio_start(struct inode *inode, struct bio *bio, return btrfs_csum_one_bio(BTRFS_I(inode), bio, 0, 0); } + + +bool btrfs_bio_fits_in_ordered_extent(struct page *page, struct bio *bio, + unsigned int size) +{ + struct btrfs_inode *inode = BTRFS_I(page->mapping->host); + struct btrfs_fs_info *fs_info = inode->root->fs_info; + struct btrfs_ordered_extent *ordered; + u64 len = bio->bi_iter.bi_size + size; + bool ret = true; + + ASSERT(btrfs_is_zoned(fs_info)); + ASSERT(fs_info->max_zone_append_size > 0); + ASSERT(bio_op(bio) == REQ_OP_ZONE_APPEND); + + /* Ordered extent not yet created, so we're good */ + ordered = btrfs_lookup_ordered_extent(inode, page_offset(page)); + if (!ordered) + return ret; + + if ((bio->bi_iter.bi_sector << SECTOR_SHIFT) + len > + ordered->disk_bytenr + ordered->disk_num_bytes) + ret = false; + + btrfs_put_ordered_extent(ordered); + + return ret; +} + static blk_status_t extract_ordered_extent(struct btrfs_inode *inode, struct bio *bio, loff_t file_offset) {