From patchwork Tue May 30 15:49:03 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Thumshirn X-Patchwork-Id: 13260589 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 01231C77B7A for ; Tue, 30 May 2023 15:49:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232358AbjE3Ptf (ORCPT ); Tue, 30 May 2023 11:49:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39058 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232225AbjE3Pte (ORCPT ); Tue, 30 May 2023 11:49:34 -0400 Received: from esa2.hgst.iphmx.com (esa2.hgst.iphmx.com [68.232.143.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 70BE4C5; Tue, 30 May 2023 08:49:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1685461770; x=1716997770; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=LvvitQpZZtAL6oj1gqbFnc01A5MrDrOWTWrqLbLHBtg=; b=P4oq1f2bKrVhwBU6fzujvpO7p/CeDAkU18POqP3JoncHRwRaz1VF/l0G 36HRb+z3/KVA364+M9K8CN9sDg5vfhfaAwjh7iiywsAZofnZcdhPuEwkR ovRuqV+VbhmvZ/Mgg1ySyx7/y4oIH1wmdihi7/T87T5Obf+pVVkm6v5nu gr4qiFoCZ+8aqlLnW6FVNsuekKXFYRt9QcqhSNDksmTW1d0YrnZu4OY0P qsoJlpCGU0eb0w2cJ4+BZd6gpKJGnxs+n3jJlDeUjgssPxUZXUPJ+WfUG W4DjvxDp0IYe1tO1Gvoblghs3IXGZjMyPQQasoG/zzwxtFWvQbRR9tYqU Q==; X-IronPort-AV: E=Sophos;i="6.00,204,1681142400"; d="scan'208";a="336465915" Received: from uls-op-cesaip01.wdc.com (HELO uls-op-cesaep01.wdc.com) ([199.255.45.14]) by ob1.hgst.iphmx.com with ESMTP; 30 May 2023 23:49:29 +0800 IronPort-SDR: 2hFMsA9vye+GjsDHcOM8tZoH1C/2M/eOrWWo43/vjYZSbg2flFutxxvwqIzm9XLhHwOnBeercT YX82C4a2mHM86KqcuBNNo/WyUp2KpRafSyunZskXENOuuY6SZsAaS8efMX5DT1C1nq74k2Hn3G J7lroFHhuTMHTdl/vQ8U35kxglZukKXFgiHxzE6DLlFTahR3QnF41aXR5tV7VWpZgRxRpu+Psr 161UWAXYhPyOtmfQAHsVIoCVkQ+My1fHWIy5W+H2WIzZeshnnRkkADvuJtHOsaQG8BBbTMrhO4 DSE= Received: from uls-op-cesaip02.wdc.com ([10.248.3.37]) by uls-op-cesaep01.wdc.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 30 May 2023 08:04:23 -0700 IronPort-SDR: UZ8AC9JVcWItXvBURdFJfv2biVq9H2WKi13hcXxNmWmdGCl2msIehsW5OQj1211e+TheiYsP0z f/u4ZWFf/I1HZ2VD7ZgIa4wS+N2+wjgThSQMa1tPWp1wb3hH2n3ospDXQkzLVPAAbhWcu2/tEI SBqKpnvb6T+sxHwXStTtNJyZxUdL6nv8qHGMBJ3g70NYauvzNiwuU67Q4Y1/R+PJCILKB5A8CO jEOWy50NKKPkI9VlZ2fe3M709Dt9/hM2gbd5kOLisv33sJeeo1JhbeqNpeDbTlV5YHAtNPTvrC PxQ= WDCIronportException: Internal Received: from unknown (HELO redsun91.ssa.fujisawa.hgst.com) ([10.149.66.6]) by uls-op-cesaip02.wdc.com with ESMTP; 30 May 2023 08:49:26 -0700 From: Johannes Thumshirn To: Jens Axboe Cc: Christoph Hellwig , Hannes Reinecke , Chaitanya Kulkarni , Damien Le Moal , Ming Lei , linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, dm-devel@redhat.com, Song Liu , linux-raid@vger.kernel.org, Mike Snitzer , Matthew Wilcox , Dave Kleikamp , jfs-discussion@lists.sourceforge.net, cluster-devel@redhat.com, Bob Peterson , Andreas Gruenbacher , Mikulas Patocka , gouhao@uniontech.com, Johannes Thumshirn Subject: [PATCH v6 00/20] bio: check return values of bio_add_page Date: Tue, 30 May 2023 08:49:03 -0700 Message-Id: X-Mailer: git-send-email 2.40.1 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. Changes to v5: - Rebased onto latest Linus' master - Removed now superfluous BUG_ON() in fs/buffer.c (Gou) - Removed dead cleanup code in dm-crypt.c (Mikulas) Changes to v4: - Rebased onto latest Linus' master - Dropped already merged patches - Added Sergey's Reviewed-by 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 (20): 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 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 | 5 ++++- 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/buffer.c | 3 +-- 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 ++++---- 19 files changed, 59 insertions(+), 46 deletions(-)