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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9620BC07E9D for ; Fri, 23 Sep 2022 17:37:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232023AbiIWRh0 (ORCPT ); Fri, 23 Sep 2022 13:37:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54906 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232287AbiIWRg6 (ORCPT ); Fri, 23 Sep 2022 13:36:58 -0400 Received: from mailout2.w1.samsung.com (mailout2.w1.samsung.com [210.118.77.12]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B9FA9153125 for ; Fri, 23 Sep 2022 10:36:35 -0700 (PDT) Received: from eucas1p2.samsung.com (unknown [182.198.249.207]) by mailout2.w1.samsung.com (KnoxPortal) with ESMTP id 20220923173634euoutp020f0f2497f55a65df187358af7167e068~XjeM7FLwp3258632586euoutp02P for ; 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Fri, 23 Sep 2022 17:36:31 +0000 (GMT) Received: from eusmgms2.samsung.com (unknown [182.198.249.180]) by eusmtrp2.samsung.com (KnoxPortal) with ESMTP id 20220923173631eusmtrp24c355eec72b16adf2b5af6b9f91c9d89~XjeKhNNeo1023410234eusmtrp2-; Fri, 23 Sep 2022 17:36:31 +0000 (GMT) X-AuditID: cbfec7f4-893ff70000011e89-3d-632deea03b08 Received: from eusmtip2.samsung.com ( [203.254.199.222]) by eusmgms2.samsung.com (EUCPMTA) with SMTP id EC.5F.10862.F9EED236; Fri, 23 Sep 2022 18:36:31 +0100 (BST) Received: from localhost (unknown [106.210.248.168]) by eusmtip2.samsung.com (KnoxPortal) with ESMTPA id 20220923173631eusmtip2e03787d8bb3d48ec0db7b3d7ae7a333e~XjeKHxeXU2194521945eusmtip2g; Fri, 23 Sep 2022 17:36:31 +0000 (GMT) From: Pankaj Raghav To: snitzer@kernel.org, axboe@kernel.dk, agk@redhat.com, hch@lst.de, damien.lemoal@opensource.wdc.com Cc: jaegeuk@kernel.org, gost.dev@samsung.com, bvanassche@acm.org, linux-kernel@vger.kernel.org, hare@suse.de, matias.bjorling@wdc.com, Johannes.Thumshirn@wdc.com, linux-block@vger.kernel.org, linux-nvme@lists.infradead.org, pankydev8@gmail.com, dm-devel@redhat.com, Pankaj Raghav Subject: [PATCH v15 11/13] dm: call dm_zone_endio after the target endio callback for zoned devices Date: Fri, 23 Sep 2022 19:36:16 +0200 Message-Id: <20220923173618.6899-12-p.raghav@samsung.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220923173618.6899-1-p.raghav@samsung.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrLKsWRmVeSWpSXmKPExsWy7djPc7oL3ukmGzx5wm+x/tQxZovVd/vZ LKZ9+Mls8fvseWaLve9ms1rcPLCTyWLPoklMFitXH2WyeLJ+FrPF3657TBZ7b2lbXN41h81i /rKn7BYT2r4yW3xe2sJusebmUxaLE7ekHQQ9Ll/x9tg56y67x+WzpR6bVnWyeWxeUu+x+2YD m8fO1vusHu/3XWXz6NuyitFj8+lqj8+b5DzaD3QzBfBEcdmkpOZklqUW6dslcGWs37OBqWAe X8WURdvZGhgvcncxcnJICJhILJhylK2LkYtDSGAFo8TuWU9YQRJCAl8YJW4/C4RIfGaU+HDj LgtMx4sjc5khEssZJd70zIfqeMkoses+YxcjBwebgJZEYyc7SFhEIF3i+Nab7CD1zALbmCTa Zu4EGyQskCpxfOdeMJtFQFWi9ch2ZhCbV8BSYv7umVDL5CVmXvrODjKTEyje31gDUSIocXLm E7ASZqCS5q2zwe6REFjPKdGx/S8jRK+LxIKzZ6FsYYlXx7ewQ9gyEv93zmeCsKslnt74DdXc wijRv3M9G8gyCQFrib4zOSAms4CmxPpd+hDljhLNG14zQlTwSdx4KwhxAp/EpG3TmSHCvBId bUIQ1UoSO38+gVoqIXG5aQ7UUx4SX17uY5zAqDgLyTOzkDwzC2HvAkbmVYziqaXFuempxUZ5 qeV6xYm5xaV56XrJ+bmbGIEp8PS/4192MC5/9VHvECMTB+MhRgkOZiUR3pSLuslCvCmJlVWp RfnxRaU5qcWHGKU5WJTEedlmaCULCaQnlqRmp6YWpBbBZJk4OKUamPxciu/Uzf+q0qr7oy87 vTu6z+7f18NWK6cvjHhvXCzJxVI+2XSfvs/9H3YrqrbEvH9jstb1RETv3mhvPWU/+Q/su/64 +6hwSh6u2bxfQClqvqPg6mUzG2v+3klvvVhd7dV4a8srYctjR9xkChyTVY+bFk364rgi84xH 7avPM7Z82braW5lH8OWuw4eUttr1GZr8mvK6fo22R7RTfNxZ23fzb+nv44yc+C1wR3e33PIo T2fJu3K3heudbpqxnoljiWqaMWnR5JIVatPsNHgMrwVlnkuqXDePvy3xbaBmxyddgf2WYuVp 6osmqt1yWJBhVOLgJxJx88WVDu9dbcsMZ/qIv+g+ZcZg0Sf9/TivEktxRqKhFnNRcSIAWGcn fvADAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrHIsWRmVeSWpSXmKPExsVy+t/xe7rz3+kmG2xfpm2x/tQxZovVd/vZ LKZ9+Mls8fvseWaLve9ms1rcPLCTyWLPoklMFitXH2WyeLJ+FrPF3657TBZ7b2lbXN41h81i /rKn7BYT2r4yW3xe2sJusebmUxaLE7ekHQQ9Ll/x9tg56y67x+WzpR6bVnWyeWxeUu+x+2YD m8fO1vusHu/3XWXz6NuyitFj8+lqj8+b5DzaD3QzBfBE6dkU5ZeWpCpk5BeX2CpFG1oY6Rla WugZmVjqGRqbx1oZmSrp29mkpOZklqUW6dsl6GWs37OBqWAeX8WURdvZGhgvcncxcnJICJhI vDgyl7mLkYtDSGApo8Sb3T1MEAkJidsLmxghbGGJP9e62CCKnjNKTNu9nL2LkYODTUBLorGT HaRGRCBX4tjae6wgNcwCR5gk2nbfB0sICyRLLHvyhBXEZhFQlWg9sp0ZxOYVsJSYv3smC8QC eYmZl76DzeQEivc31oCEhQQsJM4vfsQOUS4ocXLmE7ByZqDy5q2zmScwCsxCkpqFJLWAkWkV o0hqaXFuem6xkV5xYm5xaV66XnJ+7iZGYMRuO/Zzyw7Gla8+6h1iZOJgPMQowcGsJMKbclE3 WYg3JbGyKrUoP76oNCe1+BCjKdDZE5mlRJPzgSkjryTe0MzA1NDEzNLA1NLMWEmc17OgI1FI ID2xJDU7NbUgtQimj4mDU6qBqaXwcaWWRlDSlXkubLWdEUqiC+9P5TX58ZF7vjPffsaexqzO 1xNnT+iT62p8Efhry7bZf3hX2kn4dq5ckmg2I/Tgwbkdiyv3ZwtKz1iXzumr+XpPtbhssdnh IvHdP2oVLnWEzDNn0VYJnO370KHt/7Q8loqfFy2qfn5pU+vbfJ3x+Z7KRZps7mXmvG9qZL3C zCIO9/NHnFI5xfx9CkdxNnuPEE8Zc8HU8w8+PJgVIHLP5Kj8hEtMMa8cH5p6lFu4Xi1vqfbs 496ywNal99GD+PUihz3lw11W6h+6tUNnbqj82yse22929n08tkafJzwjrX3TsfzFOo8kUuzy ZrM99BDdVKIUz5N8w+/5ZV0lluKMREMt5qLiRABm3IwQYQMAAA== X-CMS-MailID: 20220923173631eucas1p23cceb8438d6b8b9c3460192c0ad2472d X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-RootMTR: 20220923173631eucas1p23cceb8438d6b8b9c3460192c0ad2472d X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20220923173631eucas1p23cceb8438d6b8b9c3460192c0ad2472d References: <20220923173618.6899-1-p.raghav@samsung.com> Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org dm_zone_endio() updates the bi_sector of orig bio for zoned devices that uses either native append or append emulation, and it is called before the endio of the target. But target endio can still update the clone bio after dm_zone_endio is called, thereby, the orig bio does not contain the updated information anymore. Currently, this is not a problem as the targets that support zoned devices such as dm-zoned, dm-linear, and dm-crypt do not have an endio function, and even if they do (such as dm-flakey), they don't modify the bio->bi_iter.bi_sector of the cloned bio that is used to update the orig_bio's bi_sector in dm_zone_endio function. This is a prep patch for the new dm-po2zoned target as it modifies bi_sector in the endio callback. Call dm_zone_endio for zoned devices after calling the target's endio function. Reviewed-by: Mike Snitzer Signed-off-by: Pankaj Raghav --- drivers/md/dm.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 7c35dea88ed1..874e1dc9fc26 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1122,10 +1122,6 @@ static void clone_endio(struct bio *bio) disable_write_zeroes(md); } - if (static_branch_unlikely(&zoned_enabled) && - unlikely(bdev_is_zoned(bio->bi_bdev))) - dm_zone_endio(io, bio); - if (endio) { int r = endio(ti, bio, &error); switch (r) { @@ -1154,6 +1150,10 @@ static void clone_endio(struct bio *bio) } } + if (static_branch_unlikely(&zoned_enabled) && + unlikely(bdev_is_zoned(bio->bi_bdev))) + dm_zone_endio(io, bio); + if (static_branch_unlikely(&swap_bios_enabled) && unlikely(swap_bios_limit(ti, bio))) up(&md->swap_bios_semaphore); -- 2.25.1 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 us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0F23DC04A95 for ; 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Similar Internal Domain=false; Similar Monitored External Domain=false; Custom External Domain=false; Mimecast External Domain=false; Newly Observed Domain=false; Internal User Name=false; Custom Display Name List=false; Reply-to Address Mismatch=false; Targeted Threat Dictionary=false; Mimecast Threat Dictionary=false; Custom Threat Dictionary=false X-Scanned-By: MIMEDefang 3.1 on 10.11.54.7 Subject: [dm-devel] [PATCH v15 11/13] dm: call dm_zone_endio after the target endio callback for zoned devices X-BeenThere: dm-devel@redhat.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: device-mapper development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Pankaj Raghav , bvanassche@acm.org, pankydev8@gmail.com, gost.dev@samsung.com, linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, linux-block@vger.kernel.org, dm-devel@redhat.com, Johannes.Thumshirn@wdc.com, jaegeuk@kernel.org, matias.bjorling@wdc.com Errors-To: dm-devel-bounces@redhat.com Sender: "dm-devel" X-Scanned-By: MIMEDefang 3.1 on 10.11.54.10 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit dm_zone_endio() updates the bi_sector of orig bio for zoned devices that uses either native append or append emulation, and it is called before the endio of the target. But target endio can still update the clone bio after dm_zone_endio is called, thereby, the orig bio does not contain the updated information anymore. Currently, this is not a problem as the targets that support zoned devices such as dm-zoned, dm-linear, and dm-crypt do not have an endio function, and even if they do (such as dm-flakey), they don't modify the bio->bi_iter.bi_sector of the cloned bio that is used to update the orig_bio's bi_sector in dm_zone_endio function. This is a prep patch for the new dm-po2zoned target as it modifies bi_sector in the endio callback. Call dm_zone_endio for zoned devices after calling the target's endio function. Reviewed-by: Mike Snitzer Signed-off-by: Pankaj Raghav --- drivers/md/dm.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 7c35dea88ed1..874e1dc9fc26 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1122,10 +1122,6 @@ static void clone_endio(struct bio *bio) disable_write_zeroes(md); } - if (static_branch_unlikely(&zoned_enabled) && - unlikely(bdev_is_zoned(bio->bi_bdev))) - dm_zone_endio(io, bio); - if (endio) { int r = endio(ti, bio, &error); switch (r) { @@ -1154,6 +1150,10 @@ static void clone_endio(struct bio *bio) } } + if (static_branch_unlikely(&zoned_enabled) && + unlikely(bdev_is_zoned(bio->bi_bdev))) + dm_zone_endio(io, bio); + if (static_branch_unlikely(&swap_bios_enabled) && unlikely(swap_bios_limit(ti, bio))) up(&md->swap_bios_semaphore); -- 2.25.1 -- dm-devel mailing list dm-devel@redhat.com https://listman.redhat.com/mailman/listinfo/dm-devel