From patchwork Fri Apr 5 04:41:41 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: 13618483 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 02B7C224CC; Fri, 5 Apr 2024 04:42:12 +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=1712292133; cv=none; b=eeGFje9/MDGhmnwEAemM7lriOQcBfEsPu+UE0lwSinXtHuY4xPtJ+DoglS1cXWiSh8WcYolpgYFNgM4PoU94n5YAXqFAnySpXZMDvPfcLs6hwTLbiAPF4xfpyCjZlh1lAl9otshIPIPuzWOpj2+7s7fLpk7/GTZSyIKHFOkruIk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712292133; c=relaxed/simple; bh=CdmylnpKWrXAGZzcENcMnSOFl45wLma7IJdIjVP9Y6w=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=jdJkTC1UeSWWU+Jir6SjZqcImQtKY2rJkJbkpL352FZptecaBzp+k6Y1nHMf+X0d4bZoPPJiv17fMWGxT50O6ZCLl3vIL8qh7xaCzfmvC1mU3Ie1zfgOtyn2lP16ffO3sp3avjiK27ndLZ66ydTA8ib7f5CEYZ9EulThUYoXno4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=eeJ+l0Cw; 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="eeJ+l0Cw" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 64E6EC433B1; Fri, 5 Apr 2024 04:42:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1712292132; bh=CdmylnpKWrXAGZzcENcMnSOFl45wLma7IJdIjVP9Y6w=; h=From:To:Subject:Date:In-Reply-To:References:From; b=eeJ+l0Cw1jZsFML0BRUJgtHMGJGmyqmmAP7JTRjGmQ6NsaBxp5dYGUOL/d5YsLcYm iLOVQzZoWVaLZ0KgpDqnWxH0/coTO3DnSWPQBI/EpFDM3+myXcqZBcs3MsKUe7cNk7 seBUieHIKoIFRoxtf4083d77N4dX+2jLb3VzJJmn3HSqh/yA8/LYZj02zFIOOqokwQ 2djg/xvKIikb0FbTySRCyc+NGFh9n21YnT5CxIsPwhg+gRRo4OvG7XcvuUNWYO7hYq gpBRwi/SyIcbMrIR3LFTfRmzmczvB3Jp4SNCAdwpfQW+KxpPMXWWLg1v0jlbe4yBTz hP+/23BhPzEHA== 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 v6 02/28] block: Remove req_bio_endio() Date: Fri, 5 Apr 2024 13:41:41 +0900 Message-ID: <20240405044207.1123462-3-dlemoal@kernel.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240405044207.1123462-1-dlemoal@kernel.org> References: <20240405044207.1123462-1-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 Tested-by: Hans Holmberg --- 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;