From patchwork Thu Apr 20 10:04:39 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Thumshirn X-Patchwork-Id: 13218337 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 A7CB2C77B73 for ; Thu, 20 Apr 2023 10:06:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234555AbjDTKGa (ORCPT ); Thu, 20 Apr 2023 06:06:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47720 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234114AbjDTKF7 (ORCPT ); Thu, 20 Apr 2023 06:05:59 -0400 Received: from mail-wm1-f41.google.com (mail-wm1-f41.google.com [209.85.128.41]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A087930E9; Thu, 20 Apr 2023 03:05:51 -0700 (PDT) Received: by mail-wm1-f41.google.com with SMTP id 5b1f17b1804b1-3f086770a50so3647345e9.2; Thu, 20 Apr 2023 03:05:51 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1681985150; x=1684577150; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=ZcXCJ3SJOteyet1IXFZTQ3OoqtJ2euWeW1pB3mgV2W4=; b=gOmaBNUINaELEEmzJIrkDSYT5XTofJXOk2uTeqC86Gb2i1Kz9V8PRNXcgB/VcQnMyT XC1Kw2H033roxo1EzJQCb2qfY0mqdoZiVZ1jcHLFl6TtphDKP8eeadcx12xuCxZwWvSl 7CcSPMo8/+FGdAbTmxOgBf8Ru1tZwGTBIENFOhUMvIk+rGejbdpyb8VVNj0mCUsABdjU YgPmf43+vOEKrSl0WhvzUlsyYD5zduVuDpuBQg7SyenOmaQf6kqqQFxJrshC66V15esj f+m+K3+zXSIsX925ac3IXTOaM0O3EERfU17QsEot+fyW7x7arvmt6gsJxz35wETfF6IT Wr/Q== X-Gm-Message-State: AAQBX9ebbKd7xiivYeCpy0ueDiF1e0K5R1VbNdML+6Yppup/KB8/8RZk ltVg/L6IeDgdYPNoO8CsePxBnGVVpQaqIuk/ X-Google-Smtp-Source: AKy350ZgMStjbiqJTTKXUPdei9S3WxVemsjZICWKQrqIJ34flrxB2Hb2jlcmCp+kqLQGz5LFUepZLA== X-Received: by 2002:a5d:5683:0:b0:2f7:8acb:b823 with SMTP id f3-20020a5d5683000000b002f78acbb823mr707539wrv.56.1681985149859; Thu, 20 Apr 2023 03:05:49 -0700 (PDT) Received: from localhost.localdomain (aftr-62-216-205-208.dynamic.mnet-online.de. [62.216.205.208]) by smtp.googlemail.com with ESMTPSA id l11-20020a5d674b000000b0030276f42f08sm201410wrw.88.2023.04.20.03.05.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 20 Apr 2023 03:05:49 -0700 (PDT) From: Johannes Thumshirn To: axboe@kernel.dk Cc: johannes.thumshirn@wdc.com, agruenba@redhat.com, cluster-devel@redhat.com, damien.lemoal@wdc.com, dm-devel@redhat.com, dsterba@suse.com, hare@suse.de, hch@lst.de, jfs-discussion@lists.sourceforge.net, kch@nvidia.com, linux-block@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-raid@vger.kernel.org, ming.lei@redhat.com, rpeterso@redhat.com, shaggy@kernel.org, snitzer@kernel.org, song@kernel.org, willy@infradead.org, Johannes Thumshirn Subject: [PATCH v4 00/22] bio: check return values of bio_add_page Date: Thu, 20 Apr 2023 12:04:39 +0200 Message-Id: <20230420100501.32981-1-jth@kernel.org> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-raid@vger.kernel.org We have two functions for adding a page to a bio, __bio_add_page() which is used to add a single page to a freshly created bio and bio_add_page() which is used to add a page to an existing bio. While __bio_add_page() is expected to succeed, bio_add_page() can fail. This series converts the callers of bio_add_page() which can easily use __bio_add_page() to using it and checks the return of bio_add_page() for callers that don't work on a freshly created bio. Lastly it marks bio_add_page() as __must_check so we don't have to go again and audit all callers. NOTE: David already applied the two btrfs patches to his tree but I've left them in the series to make the build bot happy. Changes to v3: - Added __bio_add_folio and use it in iomap (Willy) - Mark bio_add_folio must check (Willy) - s/GFS/GFS2/ (Andreas) Changes to v2: - Removed 'wont fail' comments pointed out by Song Changes to v1: - Removed pointless comment pointed out by Willy - Changed commit messages pointed out by Damien - Colledted Damien's Reviews and Acks Johannes Thumshirn (22): swap: use __bio_add_page to add page to bio drbd: use __bio_add_page to add page to bio dm: dm-zoned: use __bio_add_page for adding single metadata page fs: buffer: use __bio_add_page to add single page to bio md: use __bio_add_page to add single page md: raid5-log: use __bio_add_page to add single page md: raid5: use __bio_add_page to add single page to new bio btrfs: repair: use __bio_add_page for adding single page btrfs: raid56: use __bio_add_page to add single page jfs: logmgr: use __bio_add_page to add single page to bio gfs2: use __bio_add_page for adding single page to bio zonefs: use __bio_add_page for adding single page to bio zram: use __bio_add_page for adding single page to bio floppy: use __bio_add_page for adding single page to bio md: check for failure when adding pages in alloc_behind_master_bio md: raid1: use __bio_add_page for adding single page to bio md: raid1: check if adding pages to resync bio fails dm-crypt: check if adding pages to clone bio fails block: mark bio_add_page as __must_check block: add __bio_add_folio fs: iomap: use __bio_add_folio where possible block: mark bio_add_folio as __must_check block/bio.c | 8 ++++++++ drivers/block/drbd/drbd_bitmap.c | 4 +--- drivers/block/floppy.c | 2 +- drivers/block/zram/zram_drv.c | 2 +- drivers/md/dm-crypt.c | 9 ++++++++- drivers/md/dm-zoned-metadata.c | 6 +++--- drivers/md/md.c | 4 ++-- drivers/md/raid1-10.c | 11 ++++++----- drivers/md/raid1.c | 7 +++++-- drivers/md/raid10.c | 20 ++++++++++---------- drivers/md/raid5-cache.c | 2 +- drivers/md/raid5-ppl.c | 4 ++-- fs/btrfs/bio.c | 2 +- fs/btrfs/raid56.c | 2 +- fs/buffer.c | 2 +- fs/gfs2/ops_fstype.c | 2 +- fs/iomap/buffered-io.c | 6 +++--- fs/jfs/jfs_logmgr.c | 4 ++-- fs/zonefs/super.c | 2 +- include/linux/bio.h | 5 +++-- mm/page_io.c | 8 ++++---- 21 files changed, 65 insertions(+), 47 deletions(-) base-commit: af67688dca57999fd848f051eeea1d375ba546b2