From patchwork Tue Apr 2 12:38:40 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Damien Le Moal X-Patchwork-Id: 13613890 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6A17C7A151; Tue, 2 Apr 2024 12:39:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712061552; cv=none; b=Axs17XaoD3ubygzAzVLVKlRd744nutpPUWahbOCFMVKMMCn7SyrJET+VYpMpq81wo9XOxyJA+EYz2n1nsXqGPQsDjpJ19MkkCcWRFI2uFy9HqzKJ3GY4bmRqVsShFkkX/2x9zZdbIG3U9hA2+vY1Xk9dQbOuBr3E8JdnTQPXFlU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712061552; c=relaxed/simple; bh=0yqNrZFOQaepbT+fRTCJM2qoLk9O4d9p9W1UQpJmlfM=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=iWf4DIqscL7ZUSxOAMl5p+STL+tWiCkPD0ZMrQSwmhRkPLaT/rE4KJsoK+7TmGNr6gLfGr44eg/zaGNf/+yqbVUY00dWLAEYJAEbiu67UoIdS2O4//A9jvHovdsowzA+UuKOScddClrLiFZ+K0d9iyGEf+c+pSCZoOei9MFdYns= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=pYflCbU7; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="pYflCbU7" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D2B4DC433F1; Tue, 2 Apr 2024 12:39:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1712061551; bh=0yqNrZFOQaepbT+fRTCJM2qoLk9O4d9p9W1UQpJmlfM=; h=From:To:Subject:Date:In-Reply-To:References:From; b=pYflCbU7s91bIX9gd5wfltBtprE4s5pY8I1I8ooTg7/K0ZE8cjAnWGh7F8wvV9RyY uFoShUPljab33xe5DnwSNM8tg7lSeIE/IFNDXO20n7XVRN3VZLC0UxfNy2LuLzYTL9 bnGWfdOJhmTUTC03OiE0UX4SEtMpzEzuEXFqUP9CHKhmmmaibNCm8nbWtQjO+4BV0Q Bi/cH1OSOng5a91zYoiyyuAXw2k86/atrL64jxf4svv8IDvhsvBdWRejd8lRgEj2D9 H1LCy16h8dyUsktalrbjjULDKzNXHnqtNAObPDOZrYk4OXcVPiyFCabCIwZgrr7wdP ehThBurLKTAnA== From: Damien Le Moal To: linux-block@vger.kernel.org, Jens Axboe , linux-scsi@vger.kernel.org, "Martin K . Petersen" , dm-devel@lists.linux.dev, Mike Snitzer , linux-nvme@lists.infradead.org, Keith Busch , Christoph Hellwig Subject: [PATCH v4 01/28] block: Restore sector of flush requests Date: Tue, 2 Apr 2024 21:38:40 +0900 Message-ID: <20240402123907.512027-2-dlemoal@kernel.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240402123907.512027-1-dlemoal@kernel.org> References: <20240402123907.512027-1-dlemoal@kernel.org> Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On completion of a flush sequence, blk_flush_restore_request() restores the bio of a request to the original submitted BIO. However, the last use of the request in the flush sequence may have been for a POSTFLUSH which does not have a sector. So make sure to restore the request sector using the iter sector of the original BIO. This BIO has not changed yet since the completions of the flush sequence intermediate steps use requeueing of the request until all steps are completed. Restoring the request sector ensures that blk_mq_end_request() will see a valid sector as originally set when the flush BIO was submitted. Signed-off-by: Damien Le Moal Reviewed-by: Hannes Reinecke Reviewed-by: Bart Van Assche Reviewed-by: Christoph Hellwig --- block/blk-flush.c | 1 + 1 file changed, 1 insertion(+) diff --git a/block/blk-flush.c b/block/blk-flush.c index b0f314f4bc14..2f58ae018464 100644 --- a/block/blk-flush.c +++ b/block/blk-flush.c @@ -130,6 +130,7 @@ static void blk_flush_restore_request(struct request *rq) * original @rq->bio. Restore it. */ rq->bio = rq->biotail; + rq->__sector = rq->bio->bi_iter.bi_sector; /* make @rq a normal request */ rq->rq_flags &= ~RQF_FLUSH_SEQ;