From patchwork Tue Feb 22 14:04:40 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 546633 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 08074C4332F for ; Tue, 22 Feb 2022 14:05:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232635AbiBVOF3 (ORCPT ); Tue, 22 Feb 2022 09:05:29 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60166 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232020AbiBVOFZ (ORCPT ); Tue, 22 Feb 2022 09:05:25 -0500 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0965D15F343; Tue, 22 Feb 2022 06:05:00 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; 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=vQQtpX4JbmJmMV6nWCnFkKJKwU2u0PaEu2OpFhCWUSw=; b=IHKakyTmfOol74aGt0hvwyP81j x3RM3YgGSSAxT8TDx4Ss6OVLhAaPHdz5Vn6AWeTeiXgLGBskN1KlbAocbIbb9pRZ/mXF/Tp/cR7bQ uuYzSa6LOd/0/2ZehODkrMKoJZSYCNmluM7RWEBVLxV0FAexOI7Ev4LMSsPV2+QfH/PEmgdLWZwgl +MTK5Km89cfcWPDv9Djl933fR3qqHKArSSbXN6ou1ADBUebLtwB9lbv2aV+RZeZHsuZ3I6ntTxf2m 5VRBTKynTeTt0lmGZRQfFXNBZ1YFgE0SJyGhADkRkH3D+zYTpAPzy9BlLNfYGt6R+wv5oG8MFq7g8 IIxOnkrw==; Received: from [2001:4bb8:198:f8fc:c22a:ebfc:be8d:63c2] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1nMVml-009nT2-CQ; Tue, 22 Feb 2022 14:04:59 +0000 From: Christoph Hellwig To: "Martin K. Petersen" Cc: linux-scsi@vger.kernel.org, target-devel@vger.kernel.org Subject: [PATCH 5/8] scsi: remove the sense and sense_len fields from struct scsi_request Date: Tue, 22 Feb 2022 15:04:40 +0100 Message-Id: <20220222140443.589882-6-hch@lst.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220222140443.589882-1-hch@lst.de> References: <20220222140443.589882-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Just use the sense_buffer field in struct scsi_cmnd for the sense data and move the sense_len field over to struct scsi_cmnd. Signed-off-by: Christoph Hellwig --- drivers/scsi/scsi_bsg.c | 7 ++++--- drivers/scsi/scsi_ioctl.c | 15 ++++++++------- drivers/scsi/scsi_lib.c | 18 +++++++----------- drivers/scsi/sg.c | 7 ++++--- drivers/scsi/sr.c | 2 +- drivers/scsi/st.c | 5 +++-- drivers/target/target_core_pscsi.c | 3 ++- include/scsi/scsi_cmnd.h | 1 + include/scsi/scsi_request.h | 2 -- 9 files changed, 30 insertions(+), 30 deletions(-) diff --git a/drivers/scsi/scsi_bsg.c b/drivers/scsi/scsi_bsg.c index f8b65bd75ee10..0a6f6140501be 100644 --- a/drivers/scsi/scsi_bsg.c +++ b/drivers/scsi/scsi_bsg.c @@ -76,11 +76,12 @@ static int scsi_bsg_sg_io_fn(struct request_queue *q, struct sg_io_v4 *hdr, hdr->info |= SG_INFO_CHECK; hdr->response_len = 0; - if (sreq->sense_len && hdr->response) { + if (scmd->sense_len && hdr->response) { int len = min_t(unsigned int, hdr->max_response_len, - sreq->sense_len); + scmd->sense_len); - if (copy_to_user(uptr64(hdr->response), sreq->sense, len)) + if (copy_to_user(uptr64(hdr->response), scmd->sense_buffer, + len)) ret = -EFAULT; else hdr->response_len = len; diff --git a/drivers/scsi/scsi_ioctl.c b/drivers/scsi/scsi_ioctl.c index 6d9f1b44566d1..731232e6ee664 100644 --- a/drivers/scsi/scsi_ioctl.c +++ b/drivers/scsi/scsi_ioctl.c @@ -369,6 +369,7 @@ static int scsi_fill_sghdr_rq(struct scsi_device *sdev, struct request *rq, static int scsi_complete_sghdr_rq(struct request *rq, struct sg_io_hdr *hdr, struct bio *bio) { + struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(rq); struct scsi_request *req = scsi_req(rq); int r, ret = 0; @@ -388,10 +389,10 @@ static int scsi_complete_sghdr_rq(struct request *rq, struct sg_io_hdr *hdr, hdr->resid = req->resid_len; hdr->sb_len_wr = 0; - if (req->sense_len && hdr->sbp) { - int len = min((unsigned int) hdr->mx_sb_len, req->sense_len); + if (scmd->sense_len && hdr->sbp) { + int len = min((unsigned int) hdr->mx_sb_len, scmd->sense_len); - if (!copy_to_user(hdr->sbp, req->sense, len)) + if (!copy_to_user(hdr->sbp, scmd->sense_buffer, len)) hdr->sb_len_wr = len; else ret = -EFAULT; @@ -613,10 +614,10 @@ static int sg_scsi_ioctl(struct request_queue *q, fmode_t mode, err = req->result & 0xff; /* only 8 bit SCSI status */ if (err) { - if (req->sense_len && req->sense) { - bytes = (OMAX_SB_LEN > req->sense_len) ? - req->sense_len : OMAX_SB_LEN; - if (copy_to_user(sic->data, req->sense, bytes)) + if (scmd->sense_len && scmd->sense_buffer) { + bytes = (OMAX_SB_LEN > scmd->sense_len) ? + scmd->sense_len : OMAX_SB_LEN; + if (copy_to_user(sic->data, scmd->sense_buffer, bytes)) err = -EFAULT; } } else { diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index be02999b78ea5..db269f1d70b83 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -256,10 +256,11 @@ int __scsi_execute(struct scsi_device *sdev, const unsigned char *cmd, if (resid) *resid = rq->resid_len; - if (sense && rq->sense_len) - memcpy(sense, rq->sense, SCSI_SENSE_BUFFERSIZE); + if (sense && scmd->sense_len) + memcpy(sense, scmd->sense_buffer, SCSI_SENSE_BUFFERSIZE); if (sshdr) - scsi_normalize_sense(rq->sense, rq->sense_len, sshdr); + scsi_normalize_sense(scmd->sense_buffer, scmd->sense_len, + sshdr); ret = rq->result; out: blk_mq_free_request(req); @@ -876,9 +877,8 @@ static int scsi_io_completion_nz_result(struct scsi_cmnd *cmd, int result, /* * SG_IO wants current and deferred errors */ - scsi_req(req)->sense_len = - min(8 + cmd->sense_buffer[7], - SCSI_SENSE_BUFFERSIZE); + cmd->sense_len = min(8 + cmd->sense_buffer[7], + SCSI_SENSE_BUFFERSIZE); } if (sense_current) *blk_statp = scsi_result_to_blk_status(cmd, result); @@ -1126,13 +1126,10 @@ EXPORT_SYMBOL(scsi_alloc_sgtables); static void scsi_initialize_rq(struct request *rq) { struct scsi_cmnd *cmd = blk_mq_rq_to_pdu(rq); - struct scsi_request *req = &cmd->req; memset(cmd->cmnd, 0, sizeof(cmd->cmnd)); cmd->cmd_len = MAX_COMMAND_SIZE; - - req->sense_len = 0; - + cmd->sense_len = 0; init_rcu_head(&cmd->rcu); cmd->jiffies_at_alloc = jiffies; cmd->retries = 0; @@ -1825,7 +1822,6 @@ static int scsi_mq_init_request(struct blk_mq_tag_set *set, struct request *rq, kmem_cache_alloc_node(scsi_sense_cache, GFP_KERNEL, numa_node); if (!cmd->sense_buffer) return -ENOMEM; - cmd->req.sense = cmd->sense_buffer; if (scsi_host_get_prot(shost)) { sg = (void *)cmd + sizeof(struct scsi_cmnd) + diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c index cc3f11270dc23..0f96c7cde9e51 100644 --- a/drivers/scsi/sg.c +++ b/drivers/scsi/sg.c @@ -1323,6 +1323,7 @@ sg_rq_end_io_usercontext(struct work_struct *work) static void sg_rq_end_io(struct request *rq, blk_status_t status) { + struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(rq); struct sg_request *srp = rq->end_io_data; struct scsi_request *req = scsi_req(rq); Sg_device *sdp; @@ -1343,7 +1344,7 @@ sg_rq_end_io(struct request *rq, blk_status_t status) if (unlikely(atomic_read(&sdp->detaching))) pr_info("%s: device detaching\n", __func__); - sense = req->sense; + sense = scmd->sense_buffer; result = req->result; resid = req->resid_len; @@ -1380,8 +1381,8 @@ sg_rq_end_io(struct request *rq, blk_status_t status) } } - if (req->sense_len) - memcpy(srp->sense_b, req->sense, SCSI_SENSE_BUFFERSIZE); + if (scmd->sense_len) + memcpy(srp->sense_b, scmd->sense_buffer, SCSI_SENSE_BUFFERSIZE); /* Rely on write phase to clean out srp status values, so no "else" */ diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c index 3adba389cae51..1d19dd13d7f01 100644 --- a/drivers/scsi/sr.c +++ b/drivers/scsi/sr.c @@ -999,7 +999,7 @@ static int sr_read_cdda_bpc(struct cdrom_device_info *cdi, void __user *ubuf, if (scsi_req(rq)->result) { struct scsi_sense_hdr sshdr; - scsi_normalize_sense(req->sense, req->sense_len, + scsi_normalize_sense(scmd->sense_buffer, scmd->sense_len, &sshdr); *last_sense = sshdr.sense_key; ret = -EIO; diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c index 229e819a1797e..9b98e848d78c1 100644 --- a/drivers/scsi/st.c +++ b/drivers/scsi/st.c @@ -514,6 +514,7 @@ static void st_do_stats(struct scsi_tape *STp, struct request *req) static void st_scsi_execute_end(struct request *req, blk_status_t status) { + struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(req); struct st_request *SRpnt = req->end_io_data; struct scsi_request *rq = scsi_req(req); struct scsi_tape *STp = SRpnt->stp; @@ -525,8 +526,8 @@ static void st_scsi_execute_end(struct request *req, blk_status_t status) st_do_stats(STp, req); tmp = SRpnt->bio; - if (rq->sense_len) - memcpy(SRpnt->sense, rq->sense, SCSI_SENSE_BUFFERSIZE); + if (scmd->sense_len) + memcpy(SRpnt->sense, scmd->sense_buffer, SCSI_SENSE_BUFFERSIZE); if (SRpnt->waiting) complete(SRpnt->waiting); diff --git a/drivers/target/target_core_pscsi.c b/drivers/target/target_core_pscsi.c index 0a8078db923d3..9146193d0576a 100644 --- a/drivers/target/target_core_pscsi.c +++ b/drivers/target/target_core_pscsi.c @@ -1031,6 +1031,7 @@ static sector_t pscsi_get_blocks(struct se_device *dev) static void pscsi_req_done(struct request *req, blk_status_t status) { struct se_cmd *cmd = req->end_io_data; + struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(req); int result = scsi_req(req)->result; enum sam_status scsi_status = result & 0xff; u8 *cdb = cmd->priv; @@ -1040,7 +1041,7 @@ static void pscsi_req_done(struct request *req, blk_status_t status) " 0x%02x Result: 0x%08x\n", cmd, cdb[0], result); } - pscsi_complete_cmd(cmd, scsi_status, scsi_req(req)->sense); + pscsi_complete_cmd(cmd, scsi_status, scmd->sense_buffer); switch (host_byte(result)) { case DID_OK: diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h index 3e432e25645ac..47add5b32f460 100644 --- a/include/scsi/scsi_cmnd.h +++ b/include/scsi/scsi_cmnd.h @@ -112,6 +112,7 @@ struct scsi_cmnd { reconnects. Probably == sector size */ + unsigned sense_len; unsigned char *sense_buffer; /* obtained by REQUEST SENSE when * CHECK CONDITION is received on original diff --git a/include/scsi/scsi_request.h b/include/scsi/scsi_request.h index aeee0611bcbe1..bed1cc49132ab 100644 --- a/include/scsi/scsi_request.h +++ b/include/scsi/scsi_request.h @@ -6,10 +6,8 @@ struct scsi_request { int result; - unsigned int sense_len; unsigned int resid_len; /* residual count */ int retries; - void *sense; }; static inline struct scsi_request *scsi_req(struct request *rq)