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30 May 2023 08:50:09 -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 , Damien Le Moal Subject: [PATCH v6 14/20] md: raid1: use __bio_add_page for adding single page to bio Date: Tue, 30 May 2023 08:49:17 -0700 Message-Id: <05f4a70914885813a2ccdbb8aa7eb7d75f79329a.1685461490.git.johannes.thumshirn@wdc.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: D058B40024 X-Stat-Signature: sja13xpy5s3eou3fwopep3qiztk1z4jx X-Rspam-User: X-HE-Tag: 1685461816-324482 X-HE-Meta: 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 Msxa3Tcp DrHUrsDkTN/yoyl16oKGp3SYXNiTB7ivkiUHJIRqD9Y45PjxD21ASbu/pPGwQ6Y4d0CQ6N77tJwbKfG8fqqCGrEx0pH0t7qi7C2D1unjQXjm0xT1evZAlnd3IjSrTSNe7lju2hpzS1ouX2ochUJx9Jnsm+RmP25SpUCmZkdXhSEF6vRxzo8foGH1LoRXBOJUcqFrj2UUYr/cg+103MshLTC07XEa8rnUte+88hwoAkKbGdVxGg31gBIHV/fUzFJa+rFkBJHjeBIx9hBRyss34daBfsjChpYyyt6ovvajXdEAjcoO/I3WBM2Vyw7xrEfYlg6+ppYauq+Sr/8Kn9kc5qTuDnSr6hji+XCR+aHC7rvNAAs63ZHqUXP/LuCKqMJ6msH+uRz6yBDLWEAJbhuUA43A0CoOVo2YUnlaCUOuXlmkaUbLyTdGeU8yl+PS51+eztX1z2FXZ5uz+kdYoaKt0nANY8A== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: The sync request code uses bio_add_page() to add a page to a newly created bio. bio_add_page() can fail, but the return value is never checked. Use __bio_add_page() as adding a single page to a newly created bio is guaranteed to succeed. This brings us a step closer to marking bio_add_page() as __must_check. Reviewed-by: Damien Le Moal Acked-by: Song Liu Signed-off-by: Johannes Thumshirn --- drivers/md/raid1.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 8283ef177f6c..ff89839455ec 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -2917,7 +2917,7 @@ static sector_t raid1_sync_request(struct mddev *mddev, sector_t sector_nr, * won't fail because the vec table is big * enough to hold all these pages */ - bio_add_page(bio, page, len, 0); + __bio_add_page(bio, page, len, 0); } } nr_sectors += len>>9; -- 2.40.1 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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 62762C77B7C for ; Wed, 31 May 2023 11:39:01 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 0317D6B0088; Wed, 31 May 2023 07:39:01 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id F24F88E0001; 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31 May 2023 19:38:53 +0800 IronPort-SDR: K5Faudi74roLDMyRDowf8JAuuWkUj5iELslmIePR3830KlGn71pCdCErRWA2Zcvzji7xYbI990 up+m4SoYklV0wFADUMg1Zwk8D9g8IbbpGqBseztGBU2q67CEoCpwwdBZljF1rs6RoEsnke6H+z 5GGp8XefW9cQmbLIQpWi8h2xaI/99Waj2p3tgMKDSIDAcNrhX9Bx0RLBE9KRtBVwG8vFmLo0ym S8CqnFQXgV2RmGnPDbgp34LedNltW0cZ2Oq2jE/aVjsWJT4ezNdvrMMufx0pNKJjfdibNpN/+a XwM= 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; 31 May 2023 03:53:45 -0700 IronPort-SDR: AYqivzP+zZBr7YXk9dG8Jb8zBbjPBW/KSPUnaKqwxnOgRpMHJQY/5pAu5OZbZHqAmB/gPLDcZN MvRoax4upNaHhDpQjCOuDZYZBc5P3AI7kmx9HzZph/faczGWX9l2u30PItVdfrBi4SmXmwqO4v adAhYxT+hQbjt3XzjoeKlMlN6vKBbho22xcievn7V3yzXTKPnAxwlMRsSHS4haca85vjP3X3sX hY5OnMM4jPGIz1ehr4KHfQXrL6o4rX1Mmw/kqbdLZC64FV0/mXL5aSvmkLl4HBPXymYqbCH6x1 VeA= WDCIronportException: Internal Received: from unknown (HELO redsun91.ssa.fujisawa.hgst.com) ([10.149.66.6]) by uls-op-cesaip02.wdc.com with ESMTP; 31 May 2023 04:38:47 -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 , gouha7@uniontech.com, Johannes Thumshirn , Damien Le Moal Subject: [PATCH v6 14/20] md: raid1: use __bio_add_page for adding single page to bio Date: Wed, 31 May 2023 04:37:56 -0700 Message-ID: <05f4a70914885813a2ccdbb8aa7eb7d75f79329a.1685461490.git.johannes.thumshirn@wdc.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Stat-Signature: 3gypzyn3dg7jko5zhfx7spejqp8nuger X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 7F0961C0006 X-HE-Tag: 1685533138-409707 X-HE-Meta: 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 JSj98Mr2 n5PMTB/ycrzjKHU1QBXVSSX4Gx5OTLALchTMO91+0HhSmmp0ZwKxM5scxx2LkrK5G3TpTSS5XomB73AAgAIJWPcXsR9/+CcvfLRi+gFtymtXZv9WnXBfry0h+ZAaySRMam3G/R5X6PiQMciyMZO83A4kl+12Cm1D1HNdLMORsWRHuZPaiicClTNNkoxnaGkVe0bCwfzHaO697nYJxcNkZ9EqeumpIkikdhcju/oLtgC/nrr3oodOI/oPMgb8QA/swYZuElHnaxJRtDawP9S6GpHCVN1TEZ2Phsl2J9xHYGTZt++OKU0r2iWxMTJGP0jzgd7sxOc804m2+OETLswseF/lbzqZnrDRjSOhkyiSGn3PVg5xFXzqYy1KpUD2FL9OFyBIE30iZrRT7PmbUi/m/97wA1QbYgiLIAv0WuLZ0+siXsb73CJz9m5/9UQgqHIs9Lslh4WCVsEyB1ds= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Message-ID: <20230531113756.Qxm0FmVjP0b9OsR_Gtj5xmDgRIsjn0pt1e3eP_HcPdE@z> The sync request code uses bio_add_page() to add a page to a newly created bio. bio_add_page() can fail, but the return value is never checked. Use __bio_add_page() as adding a single page to a newly created bio is guaranteed to succeed. This brings us a step closer to marking bio_add_page() as __must_check. Reviewed-by: Damien Le Moal Acked-by: Song Liu Signed-off-by: Johannes Thumshirn --- drivers/md/raid1.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 8283ef177f6c..ff89839455ec 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -2917,7 +2917,7 @@ static sector_t raid1_sync_request(struct mddev *mddev, sector_t sector_nr, * won't fail because the vec table is big * enough to hold all these pages */ - bio_add_page(bio, page, len, 0); + __bio_add_page(bio, page, len, 0); } } nr_sectors += len>>9; -- 2.40.1