From patchwork Tue Apr 2 12:38:41 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: 13613891 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 A9CA77A151; Tue, 2 Apr 2024 12:39:13 +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=1712061553; cv=none; b=ulNiDqc85BxeL97h1kaPsy8q5M44X+80jdP0qTP55qZw05f5bHDZXOh7wZKzy26bA6VGnPIPK4TLKUzFFMa4zUVt+A4v0RLm889ww7LrpsTaR6XhkM9StlkqeDAXjt88GqEViyTfC+3aovBJi+QW/J3VOkSMtzLnwH58we/IC6I= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712061553; c=relaxed/simple; bh=KTggjrLkr1LdrH93LGLA7NX1WOMkOIM1SwbKPwIKN2o=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=StXSz0EC04PPeriwuRqAmsXCY5NI+v4Kk8WOM8RjTirIRXaO395heeTWg5jU9YzgzjsfA7EPxdlAM+Gjff6EX5pkfRHolSn9vxRXurOyC7dyhojby2eQ8sLnrQdOpNBDHAO9uKZt3R80JhOfJ0e6IkpyanneLz2yJYvMkYYEK7g= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=U6kSJ9bo; 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="U6kSJ9bo" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 370A0C43399; Tue, 2 Apr 2024 12:39:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1712061553; bh=KTggjrLkr1LdrH93LGLA7NX1WOMkOIM1SwbKPwIKN2o=; h=From:To:Subject:Date:In-Reply-To:References:From; b=U6kSJ9bomSXJYDrRhpoNmL1RlrhhW12S/kGCxTT41SD0eIK/saAHS1aH5BxxKThNW wH3gi4ZWe5mSrl4WNMAMu5fT1Xn/+FiblYjOIaRy0PMS995CtZ0dlNmtH+8jQEL2yT LnvzHXecH2+6nj0+MXPPeVDnMeIkxx3KK6TAi+rg5yno9ZsMShwUqQJ2b2X++eXUU7 Ql0/1Y5GZo88TFQfGP77FLyh7oWTo4HlgC0topjlyDh62pyeKDCj+GxV6fG/ayf84v XIPrzqdpYeFPuyaFq1ZqwyEJxIfnZktm//ofNXxKfBRuzt0YIILE4U7gXdtuOxSTn7 P3aqhJbt2hdTQ== 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 02/28] block: Remove req_bio_endio() Date: Tue, 2 Apr 2024 21:38:41 +0900 Message-ID: <20240402123907.512027-3-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 Moving req_bio_endio() code into its only caller, blk_update_request(), allows reducing accesses to and tests of bio and request fields. Also, given that partial completions of zone append operations is not possible and that zone append operations cannot be merged, the update of the BIO sector using the request sector for these operations can be moved directly before the call to bio_endio(). Signed-off-by: Damien Le Moal Reviewed-by: Christoph Hellwig Reviewed-by: Bart Van Assche Reviewed-by: Hannes Reinecke --- block/blk-mq.c | 58 ++++++++++++++++++++++++-------------------------- 1 file changed, 28 insertions(+), 30 deletions(-) diff --git a/block/blk-mq.c b/block/blk-mq.c index b8dbfed8b28b..fcbf0953a179 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -762,31 +762,6 @@ void blk_dump_rq_flags(struct request *rq, char *msg) } EXPORT_SYMBOL(blk_dump_rq_flags); -static void req_bio_endio(struct request *rq, struct bio *bio, - unsigned int nbytes, blk_status_t error) -{ - if (unlikely(error)) { - bio->bi_status = error; - } else if (req_op(rq) == REQ_OP_ZONE_APPEND) { - /* - * Partial zone append completions cannot be supported as the - * BIO fragments may end up not being written sequentially. - */ - if (bio->bi_iter.bi_size != nbytes) - bio->bi_status = BLK_STS_IOERR; - else - bio->bi_iter.bi_sector = rq->__sector; - } - - bio_advance(bio, nbytes); - - if (unlikely(rq->rq_flags & RQF_QUIET)) - bio_set_flag(bio, BIO_QUIET); - /* don't actually finish bio if it's part of flush sequence */ - if (bio->bi_iter.bi_size == 0 && !(rq->rq_flags & RQF_FLUSH_SEQ)) - bio_endio(bio); -} - static void blk_account_io_completion(struct request *req, unsigned int bytes) { if (req->part && blk_do_io_stat(req)) { @@ -890,6 +865,8 @@ static void blk_complete_request(struct request *req) bool blk_update_request(struct request *req, blk_status_t error, unsigned int nr_bytes) { + bool is_flush = req->rq_flags & RQF_FLUSH_SEQ; + bool quiet = req->rq_flags & RQF_QUIET; int total_bytes; trace_block_rq_complete(req, error, nr_bytes); @@ -910,9 +887,8 @@ bool blk_update_request(struct request *req, blk_status_t error, if (blk_crypto_rq_has_keyslot(req) && nr_bytes >= blk_rq_bytes(req)) __blk_crypto_rq_put_keyslot(req); - if (unlikely(error && !blk_rq_is_passthrough(req) && - !(req->rq_flags & RQF_QUIET)) && - !test_bit(GD_DEAD, &req->q->disk->state)) { + if (unlikely(error && !blk_rq_is_passthrough(req) && !quiet) && + !test_bit(GD_DEAD, &req->q->disk->state)) { blk_print_req_error(req, error); trace_block_rq_error(req, error, nr_bytes); } @@ -924,12 +900,34 @@ bool blk_update_request(struct request *req, blk_status_t error, struct bio *bio = req->bio; unsigned bio_bytes = min(bio->bi_iter.bi_size, nr_bytes); - if (bio_bytes == bio->bi_iter.bi_size) + if (unlikely(error)) + bio->bi_status = error; + + if (bio_bytes == bio->bi_iter.bi_size) { req->bio = bio->bi_next; + } else if (req_op(req) == REQ_OP_ZONE_APPEND && + error == BLK_STS_OK) { + /* + * Partial zone append completions cannot be supported + * as the BIO fragments may end up not being written + * sequentially. + */ + bio->bi_status = BLK_STS_IOERR; + } /* Completion has already been traced */ bio_clear_flag(bio, BIO_TRACE_COMPLETION); - req_bio_endio(req, bio, bio_bytes, error); + if (unlikely(quiet)) + bio_set_flag(bio, BIO_QUIET); + + bio_advance(bio, bio_bytes); + + /* Don't actually finish bio if it's part of flush sequence */ + if (!bio->bi_iter.bi_size && !is_flush) { + if (req_op(req) == REQ_OP_ZONE_APPEND) + bio->bi_iter.bi_sector = req->__sector; + bio_endio(bio); + } total_bytes += bio_bytes; nr_bytes -= bio_bytes;