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30 May 2023 08:49:45 -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 06/20] md: raid5-log: use __bio_add_page to add single page Date: Tue, 30 May 2023 08:49:09 -0700 Message-Id: <1ee0465c7b2634a4435e65a4d0b06019a73d8389.1685461490.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: 483E3160006 X-Stat-Signature: mxrpeb8bebdhoogwrjxcuuarjztzej7r X-Rspam-User: X-HE-Tag: 1685461788-906136 X-HE-Meta: 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 y3xJHDFX HOZpyWpQd7DnwpmGsteyVQ9Pz11txMUKUIzp0/cYZCiYw9KGHAgk4S+VyRmc48LwGBmdKm5nPDsn5wNoyLKAJ26YP/3g5ZSmpYDQWM+v3M1os+XKIag4yxHJ5SCC6wZOu/lPiCfGk50R4LWTPrnETAoIJWTQS/E9ENqgx/LrCUzPbGQkmvy5mmbtzG2x1KDhm0lvGifGVVsjczucGb2NfXAHK62sKATng7a4VMBec1AbSfVnWBq0laMbrgsEMSqlXlD9zxo84TFQcwo1SGA5mXDZwlDnrQgBffUDrDYhevuyocqZexr+i5APkhZ2G06yRwvUOE0x5tiKNDU4XkXalaxpbwf2Z7PrAXjMKGuRmHi/TS0x/HGN8DxoB/ymIuVq7I7DkMGXNvyPsXFyQ2tjnSXePHrf0GQ2fJlblBgjGMlH7TUa7288ADpPZGpfmEgcmzeMNK58mlnpTxNg= 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 raid5 log metadata submission 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/raid5-cache.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/md/raid5-cache.c b/drivers/md/raid5-cache.c index 46182b955aef..852b265c5db4 100644 --- a/drivers/md/raid5-cache.c +++ b/drivers/md/raid5-cache.c @@ -792,7 +792,7 @@ static struct r5l_io_unit *r5l_new_meta(struct r5l_log *log) io->current_bio = r5l_bio_alloc(log); io->current_bio->bi_end_io = r5l_log_endio; io->current_bio->bi_private = io; - bio_add_page(io->current_bio, io->meta_page, PAGE_SIZE, 0); + __bio_add_page(io->current_bio, io->meta_page, PAGE_SIZE, 0); r5_reserve_log_entry(log, io); -- 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 B1F1CC77B73 for ; Wed, 31 May 2023 11:38:29 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 27B676B007D; 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31 May 2023 04:38:22 -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 06/20] md: raid5-log: use __bio_add_page to add single page Date: Wed, 31 May 2023 04:37:48 -0700 Message-ID: <1ee0465c7b2634a4435e65a4d0b06019a73d8389.1685461490.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-Queue-Id: D42114001C X-Rspam-User: X-Rspamd-Server: rspam02 X-Stat-Signature: oz9fed6t6hgqck78j4n5xjot46jfqaaq X-HE-Tag: 1685533106-907323 X-HE-Meta: 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 wVqlN7GR +gxzJbQ0si2u2pH1YkCFAQ0wzOjQjY9vNzMzpnBOJH5SpeWkS0mpTuakMHb9wGTP0FmIG1LJ6LNH9EOigvZB0p/MlAfrBWd07rpHuV4Jcd4BnQMefJYQDUsmqraCCnhLoNm1RrRoW14F0qbTb2zVw+TGm0DqSBO/pdEzC+FzkVDhRM2gdc04MmPoFOA1dv6ruhsL8TE7gGLN6ijul1OMID5h4CXrrxI6ZWKk2VMX8O1fDnglxEvh6No0I6+I+4Hm+KA9vmUKoc1lMVZ9ecotx6NPw2Bt67C4VmBBoZtNyyjsoNyh+rEl4B/pAkZnhy0W4iNjXFu2WZHM72w5pXetvI0chUGUwav7UB4/QBxYvYQpNHGDxG7KXnWX/6NK7cgaTcs9J6TYsX1YFHKXixIhJ/YjoTNDovzeU0z5cOGjzO3FFNhp/rS7un4CenFTuVFwln7OHNBWcShldcpQ= 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: <20230531113748.VhYbKhBKRYZPaU1lI2PYf8LQGUsZRZlHv2lSMnnZqUU@z> The raid5 log metadata submission 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/raid5-cache.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/md/raid5-cache.c b/drivers/md/raid5-cache.c index 46182b955aef..852b265c5db4 100644 --- a/drivers/md/raid5-cache.c +++ b/drivers/md/raid5-cache.c @@ -792,7 +792,7 @@ static struct r5l_io_unit *r5l_new_meta(struct r5l_log *log) io->current_bio = r5l_bio_alloc(log); io->current_bio->bi_end_io = r5l_log_endio; io->current_bio->bi_private = io; - bio_add_page(io->current_bio, io->meta_page, PAGE_SIZE, 0); + __bio_add_page(io->current_bio, io->meta_page, PAGE_SIZE, 0); r5_reserve_log_entry(log, io); -- 2.40.1