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Fri, 9 Sep 2022 03:45:36 +0900 (KST) Received: from epsmtrp1.samsung.com (unknown [182.195.40.13]) by epcas5p1.samsung.com (KnoxPortal) with ESMTPA id 20220908184535epcas5p1e1f3d8b646d88079c3a7840f79e59508~S9vLonLK00840908409epcas5p1y; Thu, 8 Sep 2022 18:45:35 +0000 (GMT) Received: from epsmgms1p1new.samsung.com (unknown [182.195.42.41]) by epsmtrp1.samsung.com (KnoxPortal) with ESMTP id 20220908184535epsmtrp18d7713c7a989ffbf7ac50509cd1e61ad~S9vLnymUV3080730807epsmtrp1f; Thu, 8 Sep 2022 18:45:35 +0000 (GMT) X-AuditID: b6c32a4b-e33fb7000000d32c-d4-631a38505aa4 Received: from epsmtip2.samsung.com ( [182.195.34.31]) by epsmgms1p1new.samsung.com (Symantec Messaging Gateway) with SMTP id F4.DD.14392.F483A136; Fri, 9 Sep 2022 03:45:35 +0900 (KST) Received: from localhost.localdomain (unknown [107.110.206.5]) by epsmtip2.samsung.com (KnoxPortal) with ESMTPA id 20220908184534epsmtip23a1089d549cf64d4ca50d13174d1cb8a~S9vKSKsR32413824138epsmtip2a; Thu, 8 Sep 2022 18:45:34 +0000 (GMT) From: Kanchan Joshi To: axboe@kernel.dk, hch@lst.de, kbusch@kernel.org, asml.silence@gmail.com Cc: io-uring@vger.kernel.org, linux-nvme@lists.infradead.org, linux-block@vger.kernel.org, gost.dev@samsung.com, Kanchan Joshi Subject: [PATCH for-next v6 3/5] nvme: refactor nvme_alloc_user_request Date: Fri, 9 Sep 2022 00:05:09 +0530 Message-Id: <20220908183511.2253-4-joshi.k@samsung.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220908183511.2253-1-joshi.k@samsung.com> MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprCJsWRmVeSWpSXmKPExsWy7bCmlm6AhVSywcqH7BZzVm1jtFh9t5/N 4uaBnUwWK1cfZbJ413qOxeLo/7dsFpMOXWO02HtL22L+sqfsDpweO2fdZfe4fLbUY9OqTjaP zUvqPXbfbGDz6NuyitHj8ya5APaobJuM1MSU1CKF1Lzk/JTMvHRbJe/geOd4UzMDQ11DSwtz JYW8xNxUWyUXnwBdt8wcoLuUFMoSc0qBQgGJxcVK+nY2RfmlJakKGfnFJbZKqQUpOQUmBXrF ibnFpXnpenmpJVaGBgZGpkCFCdkZyzcfYyuYqFuxdsVH9gbGv8pdjJwcEgImEj9PH2TrYuTi EBLYzSjxYWUnlPOJUeL4ydPsEM43RomeZbMZYVp+zNrHDJHYyyjRMeUNVNVnRolvrx6ydDFy cLAJaEpcmFwK0iAi4CVx//Z7VpAaZoEZjBKrO16zg9QIC7hLNB6yBalhEVCV6D9xjxnE5hUw l3g0/Ts7xDJ5iZmXIGxOAQuJi18eskHUCEqcnPmEBcRmBqpp3job7CAJgb/sEtc+vmSDaHaR OH59DQuELSzx6vgWqKFSEi/726DsZIlLM88xQdglEo/3HISy7SVaT/Uzg9zJDPTL+l36ELv4 JHp/P2ECCUsI8Ep0tAlBVCtK3Jv0lBXCFpd4OGMJlO0hcWfDF2hYdTNKzFvQyT6BUX4Wkhdm IXlhFsK2BYzMqxglUwuKc9NTi00LjPNSy+ERm5yfu4kRnDy1vHcwPnrwQe8QIxMH4yFGCQ5m JRFe0bUSyUK8KYmVValF+fFFpTmpxYcYTYFhPJFZSjQ5H5i+80riDU0sDUzMzMxMLI3NDJXE eadoMyYLCaQnlqRmp6YWpBbB9DFxcEo1MD31VRFPflTIZphqsb6xrsuHaWpll/nPtHtaC+sM Tu/fbnJAaCv78oeMsT8j5HtWnW5bOeVzkpXORm3V1hued9ry1dys7GSWhS6qP77+25dtass5 DS0iY794xBU7PPe9YOa+LLwuImze+Z8ZQdcff4vfdrS6d8MRu6MOOjfPi6dd4Z/JofjF0CpA 9PaXx8FZs/IiYxWXzC+vqUn389x6IFTn/xm5X+sEms16NLNvr1plcFNv8dErsXss9Lbq15wU d/vuEX7zeUJOwBMti2Kfuxl/T1rd43XY4MP3sfVB8uYi12XnrvRLb5HYLGdewlLK2SN/Jcbj Q6XI/02VCqubHXSnTy7Ydb9h696sGU8WKrEUZyQaajEXFScCAMggBiQnBAAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrGLMWRmVeSWpSXmKPExsWy7bCSvK6/hVSywZvXMhZzVm1jtFh9t5/N 4uaBnUwWK1cfZbJ413qOxeLo/7dsFpMOXWO02HtL22L+sqfsDpweO2fdZfe4fLbUY9OqTjaP zUvqPXbfbGDz6NuyitHj8ya5APYoLpuU1JzMstQifbsErozlm4+xFUzUrVi74iN7A+Nf5S5G Tg4JAROJH7P2MYPYQgK7GSXaZgtCxMUlmq/9YIewhSVW/nsOZHMB1XxklNj/+SpTFyMHB5uA psSFyaUgNSICARIHGy+D1TALzGGUuHx5DztIjbCAu0TjIVuQGhYBVYn+E/fAdvEKmEs8mv4d ar68xMxLEDangIXExS8P2SDuMZe49mc6VL2gxMmZT1hAbGag+uats5knMArMQpKahSS1gJFp FaNkakFxbnpusWGBYV5quV5xYm5xaV66XnJ+7iZGcNBrae5g3L7qg94hRiYOxkOMEhzMSiK8 omslkoV4UxIrq1KL8uOLSnNSiw8xSnOwKInzXug6GS8kkJ5YkpqdmlqQWgSTZeLglGpgal+x 9Oa23mmRpx2LeSx59nK8TVdJKpwXYsgd6XPCKVRM+9zXh85FK/5oCvpfXX/8+XWdIuduzu1r YtmvtJis/xc6+bn37qs7W5bsjPwXeKJu+qnMHMYJjx4c318cOdt56cG2BlnBJ2/YExJruo6X 8ITt53kefXZeyL9v2jw/7OyZND9eUl5rNnNryVvTJDn/WfmPq+LTVNVnbjf4+vfZsw/524UF 3lyddtuor+nMgukfOLwt9M+0/yie63M7Slw6qnL9JYk3C3NaIxdI9goFa+x4Uvn20Qq9y+5y AmwqO0o3vpLcysw17cPhILcNR2w7lDve1k7ba2mpvkdm8alrPn8iznzrur5adPdzsdAdS5VY ijMSDbWYi4oTAUsPDlrpAgAA X-CMS-MailID: 20220908184535epcas5p1e1f3d8b646d88079c3a7840f79e59508 X-Msg-Generator: CA CMS-TYPE: 105P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20220908184535epcas5p1e1f3d8b646d88079c3a7840f79e59508 References: <20220908183511.2253-1-joshi.k@samsung.com> Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org Separate this out to two functions with reduced number of arguments. diff --git a/drivers/nvme/host/ioctl.c b/drivers/nvme/host/ioctl.c index 548aca8b5b9f..cb2fa4db50dd 100644 --- a/drivers/nvme/host/ioctl.c +++ b/drivers/nvme/host/ioctl.c @@ -65,18 +65,10 @@ static int nvme_finish_user_metadata(struct request *req, void __user *ubuf, } static struct request *nvme_alloc_user_request(struct request_queue *q, - struct nvme_command *cmd, void __user *ubuffer, - unsigned bufflen, void __user *meta_buffer, unsigned meta_len, - u32 meta_seed, void **metap, unsigned timeout, bool vec, + struct nvme_command *cmd, unsigned timeout, blk_opf_t rq_flags, blk_mq_req_flags_t blk_flags) { - bool write = nvme_is_write(cmd); - struct nvme_ns *ns = q->queuedata; - struct block_device *bdev = ns ? ns->disk->part0 : NULL; struct request *req; - struct bio *bio = NULL; - void *meta = NULL; - int ret; req = blk_mq_alloc_request(q, nvme_req_op(cmd) | rq_flags, blk_flags); if (IS_ERR(req)) @@ -86,49 +78,61 @@ static struct request *nvme_alloc_user_request(struct request_queue *q, if (timeout) req->timeout = timeout; nvme_req(req)->flags |= NVME_REQ_USERCMD; + return req; +} - if (ubuffer && bufflen) { - if (!vec) - ret = blk_rq_map_user(q, req, NULL, ubuffer, bufflen, - GFP_KERNEL); - else { - struct iovec fast_iov[UIO_FASTIOV]; - struct iovec *iov = fast_iov; - struct iov_iter iter; - - ret = import_iovec(rq_data_dir(req), ubuffer, bufflen, - UIO_FASTIOV, &iov, &iter); - if (ret < 0) - goto out; - ret = blk_rq_map_user_iov(q, req, NULL, &iter, - GFP_KERNEL); - kfree(iov); - } - if (ret) +static int nvme_map_user_request(struct request *req, void __user *ubuffer, + unsigned bufflen, void __user *meta_buffer, unsigned meta_len, + u32 meta_seed, void **metap, bool vec) +{ + struct request_queue *q = req->q; + struct nvme_ns *ns = q->queuedata; + struct block_device *bdev = ns ? ns->disk->part0 : NULL; + struct bio *bio = NULL; + void *meta = NULL; + int ret; + + if (!ubuffer || !bufflen) + return 0; + + if (!vec) + ret = blk_rq_map_user(q, req, NULL, ubuffer, bufflen, + GFP_KERNEL); + else { + struct iovec fast_iov[UIO_FASTIOV]; + struct iovec *iov = fast_iov; + struct iov_iter iter; + + ret = import_iovec(rq_data_dir(req), ubuffer, bufflen, + UIO_FASTIOV, &iov, &iter); + if (ret < 0) goto out; - bio = req->bio; - if (bdev) - bio_set_dev(bio, bdev); - if (bdev && meta_buffer && meta_len) { - meta = nvme_add_user_metadata(bio, meta_buffer, meta_len, - meta_seed, write); - if (IS_ERR(meta)) { - ret = PTR_ERR(meta); - goto out_unmap; - } - req->cmd_flags |= REQ_INTEGRITY; - *metap = meta; + ret = blk_rq_map_user_iov(q, req, NULL, &iter, GFP_KERNEL); + kfree(iov); + } + bio = req->bio; + if (ret) + goto out_unmap; + if (bdev) + bio_set_dev(bio, bdev); + if (bdev && meta_buffer && meta_len) { + meta = nvme_add_user_metadata(bio, meta_buffer, meta_len, + meta_seed, req_op(req) == REQ_OP_DRV_OUT); + if (IS_ERR(meta)) { + ret = PTR_ERR(meta); + goto out_unmap; } + req->cmd_flags |= REQ_INTEGRITY; + *metap = meta; } - return req; + return ret; out_unmap: if (bio) blk_rq_unmap_user(bio); out: - blk_mq_free_request(req); - return ERR_PTR(ret); + return ret; } static int nvme_submit_user_cmd(struct request_queue *q, @@ -141,13 +145,16 @@ static int nvme_submit_user_cmd(struct request_queue *q, struct bio *bio; int ret; - req = nvme_alloc_user_request(q, cmd, ubuffer, bufflen, meta_buffer, - meta_len, meta_seed, &meta, timeout, vec, 0, 0); + req = nvme_alloc_user_request(q, cmd, timeout, 0, 0); if (IS_ERR(req)) return PTR_ERR(req); - bio = req->bio; + ret = nvme_map_user_request(req, ubuffer, bufflen, meta_buffer, + meta_len, meta_seed, &meta, vec); + if (ret) + goto out; + bio = req->bio; ret = nvme_execute_passthru_rq(req); if (result) @@ -157,6 +164,7 @@ static int nvme_submit_user_cmd(struct request_queue *q, meta_len, ret); if (bio) blk_rq_unmap_user(bio); +out: blk_mq_free_request(req); return ret; } @@ -418,6 +426,7 @@ static int nvme_uring_cmd_io(struct nvme_ctrl *ctrl, struct nvme_ns *ns, blk_opf_t rq_flags = 0; blk_mq_req_flags_t blk_flags = 0; void *meta = NULL; + int ret; if (!capable(CAP_SYS_ADMIN)) return -EACCES; @@ -457,13 +466,17 @@ static int nvme_uring_cmd_io(struct nvme_ctrl *ctrl, struct nvme_ns *ns, rq_flags |= REQ_POLLED; retry: - req = nvme_alloc_user_request(q, &c, nvme_to_user_ptr(d.addr), - d.data_len, nvme_to_user_ptr(d.metadata), - d.metadata_len, 0, &meta, d.timeout_ms ? - msecs_to_jiffies(d.timeout_ms) : 0, vec, rq_flags, - blk_flags); + req = nvme_alloc_user_request(q, &c, + d.timeout_ms ? msecs_to_jiffies(d.timeout_ms) : 0, + rq_flags, blk_flags); if (IS_ERR(req)) return PTR_ERR(req); + + ret = nvme_map_user_request(req, nvme_to_user_ptr(d.addr), + d.data_len, nvme_to_user_ptr(d.metadata), + d.metadata_len, 0, &meta, vec); + if (ret) + goto out_err; req->end_io = nvme_uring_cmd_end_io; req->end_io_data = ioucmd; @@ -486,6 +499,9 @@ static int nvme_uring_cmd_io(struct nvme_ctrl *ctrl, struct nvme_ns *ns, blk_execute_rq_nowait(req, false); return -EIOCBQUEUED; +out_err: + blk_mq_free_request(req); + return ret; } static bool is_ctrl_ioctl(unsigned int cmd)