From patchwork Tue Oct 12 12:04:42 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12552309 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 87E76C433EF for ; Tue, 12 Oct 2021 12:10:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6A96960E74 for ; Tue, 12 Oct 2021 12:10:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236396AbhJLMMR (ORCPT ); Tue, 12 Oct 2021 08:12:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55478 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236332AbhJLMMP (ORCPT ); Tue, 12 Oct 2021 08:12:15 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 76A06C061570; Tue, 12 Oct 2021 05:10:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=4bzvZk83zedcj2zQ2ZJJsSX+dNvg/5xPZDJy5RXRqic=; b=RNIm4nQkoU7kNUR34B/6m5tNWM NnJWkdzeb48wxxFeEogDWcGVLdHermSWubr8Mkj8EL0XC7rKG+bx+haEmhU4OhthWX9OHHx+q4hdz 0tJLtUiZibN3cPN2feruy30Ldcc6IghdhY9fKmBRWYnpa2HnsfT941JD+MTzGr6GsdjXAfK2gSo7m gwa+sTnwMdsFNHftUegIb4SBvb6562EiZie2iF7ls1zGd7w7DtTvgCKXtGYg36GtQNlEUcEZYHLJI IupfuBDhuaxml/IUhLTfYFklRZrSnnjQ8Aj6gOa7Zl/zJzHqFEExJVj8WX1r1AZWmZDSw3E9WVFQm dZ8ETLag==; Received: from [2001:4bb8:199:73c5:f5ed:58c2:719f:d965] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1maGa4-006TwN-SU; Tue, 12 Oct 2021 12:08:54 +0000 From: Christoph Hellwig To: Jens Axboe , "Martin K. Petersen" Cc: "J. Bruce Fields" , Chuck Lever , linux-block@vger.kernel.org, linux-scsi@vger.kernel.org, target-devel@vger.kernel.org, linux-nfs@vger.kernel.org Subject: [PATCH 4/7] bsg-lib: initialize the bsg_job in bsg_transport_sg_io_fn Date: Tue, 12 Oct 2021 14:04:42 +0200 Message-Id: <20211012120445.861860-5-hch@lst.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20211012120445.861860-1-hch@lst.de> References: <20211012120445.861860-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: target-devel@vger.kernel.org Directly initialize the bsg_job structure instead of relying on the ->.initialize_rq_fn indirection. This also removes the superflous initialization of the second request used for BIDI requests. Signed-off-by: Christoph Hellwig Reviewed-by: Hannes Reinecke --- block/bsg-lib.c | 32 +++++++++++++------------------- 1 file changed, 13 insertions(+), 19 deletions(-) diff --git a/block/bsg-lib.c b/block/bsg-lib.c index ccb98276c964a..10aa378702fab 100644 --- a/block/bsg-lib.c +++ b/block/bsg-lib.c @@ -31,6 +31,7 @@ static int bsg_transport_sg_io_fn(struct request_queue *q, struct sg_io_v4 *hdr, struct bsg_job *job; struct request *rq; struct bio *bio; + void *reply; int ret; if (hdr->protocol != BSG_PROTOCOL_SCSI || @@ -39,22 +40,28 @@ static int bsg_transport_sg_io_fn(struct request_queue *q, struct sg_io_v4 *hdr, if (!capable(CAP_SYS_RAWIO)) return -EPERM; - rq = blk_get_request(q, hdr->dout_xfer_len ? + rq = blk_mq_alloc_request(q, hdr->dout_xfer_len ? REQ_OP_DRV_OUT : REQ_OP_DRV_IN, 0); if (IS_ERR(rq)) return PTR_ERR(rq); rq->timeout = timeout; job = blk_mq_rq_to_pdu(rq); + reply = job->reply; + memset(job, 0, sizeof(*job)); + job->reply = reply; + job->reply_len = SCSI_SENSE_BUFFERSIZE; + job->dd_data = job + 1; + job->request_len = hdr->request_len; job->request = memdup_user(uptr64(hdr->request), hdr->request_len); if (IS_ERR(job->request)) { ret = PTR_ERR(job->request); - goto out_put_request; + goto out_free_rq; } if (hdr->dout_xfer_len && hdr->din_xfer_len) { - job->bidi_rq = blk_get_request(rq->q, REQ_OP_DRV_IN, 0); + job->bidi_rq = blk_mq_alloc_request(rq->q, REQ_OP_DRV_IN, 0); if (IS_ERR(job->bidi_rq)) { ret = PTR_ERR(job->bidi_rq); goto out_free_job_request; @@ -134,11 +141,11 @@ static int bsg_transport_sg_io_fn(struct request_queue *q, struct sg_io_v4 *hdr, blk_rq_unmap_user(job->bidi_bio); out_free_bidi_rq: if (job->bidi_rq) - blk_put_request(job->bidi_rq); + blk_mq_free_request(job->bidi_rq); out_free_job_request: kfree(job->request); -out_put_request: - blk_put_request(rq); +out_free_rq: + blk_mq_free_request(rq); return ret; } @@ -302,18 +309,6 @@ static int bsg_init_rq(struct blk_mq_tag_set *set, struct request *req, return 0; } -/* called right before the request is given to the request_queue user */ -static void bsg_initialize_rq(struct request *req) -{ - struct bsg_job *job = blk_mq_rq_to_pdu(req); - void *reply = job->reply; - - memset(job, 0, sizeof(*job)); - job->reply = reply; - job->reply_len = SCSI_SENSE_BUFFERSIZE; - job->dd_data = job + 1; -} - static void bsg_exit_rq(struct blk_mq_tag_set *set, struct request *req, unsigned int hctx_idx) { @@ -350,7 +345,6 @@ static const struct blk_mq_ops bsg_mq_ops = { .queue_rq = bsg_queue_rq, .init_request = bsg_init_rq, .exit_request = bsg_exit_rq, - .initialize_rq_fn = bsg_initialize_rq, .complete = bsg_complete, .timeout = bsg_timeout, };