From patchwork Thu Mar 28 00:43:42 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: 13607780 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 21C1B27451; Thu, 28 Mar 2024 00:44:17 +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=1711586658; cv=none; b=AqeOY7HdUmVoHH7qqeMSnuORykbXgTTj/3ig0EW0bkAn54/oDtE5qkUTjcWuMmEpcUCu6wnvjwj5eZKsg9qB1knG33Kyt/QfFP0MXfZb/9qpanwhOmKr+7xwmq8GIfrlAtz+0sLUtmbcDupAkna8BopmS5WPbnVzWmHZu1w4hpY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711586658; c=relaxed/simple; bh=S/bqIQEromjzn63uV5lCrPSKRr0yJBlNomhFxuECu0A=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=NdPgztpOAoBcot2rpNrZEmo1oNnC3lmcSUTtNBCzARN9DCys9ZZfLR5aQfWA9gj+gv4f0bv3cqTOHtSSK0KwTYB/3RddmGqy6WLVWz8xlr8c5XChgI52plPUpyXGw6PLFP2OnzJC2+Kgam4N5dOhdAXxXdIIy43EDzzIsAA49ac= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=psZLWZ8+; 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="psZLWZ8+" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 61907C43390; Thu, 28 Mar 2024 00:44:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711586657; bh=S/bqIQEromjzn63uV5lCrPSKRr0yJBlNomhFxuECu0A=; h=From:To:Subject:Date:In-Reply-To:References:From; b=psZLWZ8+7sQrg8dsnV4lrLQFFqDYKgipJ3st8dLa1mF4fSKTLq0mw/1t+7YjjYI4L DXiPusd4mN7ZW7ANRKw3UrD++YaAuK9TUoQ6jKByJLfrQVebgfrwb4GfoG4UbCFS4G aC08063kftNv3reuT3H7psGJUZdG6hjOG7ZYBIRrPjb89+ibRyg5z0j37xhu00R4Yb aGXPDjzgZu2kIvTffZtxmYxXX4mEZx4rBqIGgb/Ar2UO/zzS2np1i6Uo+XGnPes+bl iw0eeofNim2z+grQj0AS34hW2EoyMf8XYWAeZjw1D6rupRkfO0epKpKf4FlY0sjAkR 8VolbDvnpo2Hg== 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 v3 03/30] block: Remove req_bio_endio() Date: Thu, 28 Mar 2024 09:43:42 +0900 Message-ID: <20240328004409.594888-4-dlemoal@kernel.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240328004409.594888-1-dlemoal@kernel.org> References: <20240328004409.594888-1-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 --- 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 32afb87efbd0..e55af6058cbf 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -761,31 +761,6 @@ 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)) { @@ -889,6 +864,8 @@ 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); @@ -909,9 +886,8 @@ 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); } @@ -923,12 +899,34 @@ 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;