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Sat, 3 Sep 2022 00:27:07 +0900 (KST) Received: from epsmtrp2.samsung.com (unknown [182.195.40.14]) by epcas5p1.samsung.com (KnoxPortal) with ESMTPA id 20220902152706epcas5p11f1a11710a6ba985f4679a5cfe131bf8~RFKKdBa4z2163521635epcas5p1d; Fri, 2 Sep 2022 15:27:06 +0000 (GMT) Received: from epsmgms1p2.samsung.com (unknown [182.195.42.42]) by epsmtrp2.samsung.com (KnoxPortal) with ESMTP id 20220902152706epsmtrp20fbe6a87fdee07c0b120417cc49d97e5~RFKKb672S0776407764epsmtrp2c; Fri, 2 Sep 2022 15:27:06 +0000 (GMT) X-AuditID: b6c32a4b-e33fb7000000d32c-40-631220cb0c2c Received: from epsmtip2.samsung.com ( [182.195.34.31]) by epsmgms1p2.samsung.com (Symantec Messaging Gateway) with SMTP id D5.BE.18644.9C022136; Sat, 3 Sep 2022 00:27:06 +0900 (KST) Received: from localhost.localdomain (unknown [107.110.206.5]) by epsmtip2.samsung.com (KnoxPortal) with ESMTPA id 20220902152704epsmtip243a97ccab43acdb3d30aae73a246015e~RFKI58CXx1851718517epsmtip2O; Fri, 2 Sep 2022 15:27:04 +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, Anuj Gupta , Kanchan Joshi Subject: [PATCH for-next v3 1/4] io_uring: introduce io_uring_cmd_import_fixed Date: Fri, 2 Sep 2022 20:46:54 +0530 Message-Id: <20220902151657.10766-2-joshi.k@samsung.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220902151657.10766-1-joshi.k@samsung.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprJJsWRmVeSWpSXmKPExsWy7bCmlu5pBaFkgy9bOC2aJvxltpizahuj xeq7/WwWNw/sZLJYufook8W71nMsFkf/v2WzmHToGqPF3lvaFvOXPWV34PLYOesuu8fls6Ue m1Z1snlsXlLvsftmA5tH35ZVjB6fN8kFsEdl22SkJqakFimk5iXnp2TmpdsqeQfHO8ebmhkY 6hpaWpgrKeQl5qbaKrn4BOi6ZeYAHaekUJaYUwoUCkgsLlbSt7Mpyi8tSVXIyC8usVVKLUjJ KTAp0CtOzC0uzUvXy0stsTI0MDAyBSpMyM7omjKHpWC1UMXWoz0sDYxr+bsYOTkkBEwkOs+t Ze1i5OIQEtjNKLHiy2smCOcTo8SRf80sEM5nRomdbxuZYFrW3XwFVbWLUWLtowPMcFXrJx1i 72Lk4GAT0JS4MLkUpEFEwEvi/u33YDuYQXa8vdHIDpIQFgiQWHPmFSuIzSKgKvHsUgcLiM0r YCGx+8g1Roht8hIzL30Hq+cUsJR4evUNK0SNoMTJmU/A6pmBapq3zgY7QkKgl0Piy6PjzBDN LhK3H5yFOltY4tXxLewQtpTE53d72SDsZIlLM89B1ZRIPN5zEMq2l2g91c8M8gwz0DPrd+lD 7OKT6P39hAkkLCHAK9HRJgRRrShxb9JTVghbXOLhjCWsECUeEu/fZUOCp4dRYuvSfvYJjPKz kHwwC8kHsxCWLWBkXsUomVpQnJueWmxaYJyXWg6P2OT83E2M4DSq5b2D8dGDD3qHGJk4GA8x SnAwK4nwTj0skCzEm5JYWZValB9fVJqTWnyI0RQYxBOZpUST84GJPK8k3tDE0sDEzMzMxNLY zFBJnHeKNmOykEB6YklqdmpqQWoRTB8TB6dUA9MxLX51ZX1W3j+pSR/zV57Pmb7A7KiN3BXb JEERgVMmqRwF1Y5fDlhJnGedpP/rT/8yy/qTimsZNtxlPfBO59UrzoSbRwMsBN1UV52db/d0 stw5k0pP87RF1eIXfdVPfvlW02/CbPLV6fHNN/qWzG3y1km8dTNzrH76JKeXn9jmcFs+roZ1 plrJkeDIlOxdW/6XWS77LFEk/v7Lcdlag8wbHmXHl2yK6Q/Qnr/q0fKPLOfYlr/I+tbJrrjR 6K/KzMfzLI+seDDn/5mKotiK4Po3HtJzegozFbR+r4kovuLAoDspL68/8rWistrDZxczVe5F /jgi/emb7RxuNS7rEgOxLbErDrzua9rw/epDNyWW4oxEQy3mouJEAKEJ4PssBAAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrLLMWRmVeSWpSXmKPExsWy7bCSvO4pBaFkg6NvmCyaJvxltpizahuj xeq7/WwWNw/sZLJYufook8W71nMsFkf/v2WzmHToGqPF3lvaFvOXPWV34PLYOesuu8fls6Ue m1Z1snlsXlLvsftmA5tH35ZVjB6fN8kFsEdx2aSk5mSWpRbp2yVwZXRNmcNSsFqoYuvRHpYG xrX8XYycHBICJhLrbr5i6mLk4hAS2MEoceXnUiaIhLhE87Uf7BC2sMTKf8/ZIYo+Mkp8ef2X uYuRg4NNQFPiwuRSkBoRgQCJg42XwWqYBQ4ySlx+9oQFJCEs4CexbeJeRhCbRUBV4tmlDrA4 r4CFxO4j1xghFshLzLz0HWwZp4ClxNOrb1hBbCGgmh2TdrJB1AtKnJwJMZMZqL5562zmCYwC s5CkZiFJLWBkWsUomVpQnJueW2xYYJSXWq5XnJhbXJqXrpecn7uJERwDWlo7GPes+qB3iJGJ g/EQowQHs5II79TDAslCvCmJlVWpRfnxRaU5qcWHGKU5WJTEeS90nYwXEkhPLEnNTk0tSC2C yTJxcEo1MNmw2X7dx+Cq49v9XHvntXuOq7vmXgnr3PC9P94/wTnr7lum438XMnlNS5kUrNzv eLXu4jRX+fXyXm8vrr7Ses3KuGvqwbxJW/tCQnhUzpUd4PtxRqY0myfkqvEyPfOVR86JbRfy znnjmHzt8u1T2X8+fT107KPVIq8Auen/o4Xn7TmWqyIR/HT1Ee5YnXN/Tx35KsUeHbp7Zuzz YPPoR4V5u7dr+j8ROyYirH22d9I+BZeZl/tXbrn5cQLf7GzHzcX31PvYGHqTRE5+dOHMfiwT aaDzR6+zhiHv/4Kqr+1rvH7xHY06NPdUXH/z9tD3U/0v/D1zWSk5O0nscJb12SVtmukf7XVU u//UrBO4eFyJpTgj0VCLuag4EQCF6oxX8AIAAA== X-CMS-MailID: 20220902152706epcas5p11f1a11710a6ba985f4679a5cfe131bf8 X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" CMS-TYPE: 105P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20220902152706epcas5p11f1a11710a6ba985f4679a5cfe131bf8 References: <20220902151657.10766-1-joshi.k@samsung.com> Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org From: Anuj Gupta This is a new helper that callers can use to obtain a bvec iterator for the previously mapped buffer. This is preparatory work to enable fixed-buffer support for io_uring_cmd. Signed-off-by: Anuj Gupta Signed-off-by: Kanchan Joshi --- include/linux/io_uring.h | 8 ++++++++ io_uring/uring_cmd.c | 11 +++++++++++ 2 files changed, 19 insertions(+) diff --git a/include/linux/io_uring.h b/include/linux/io_uring.h index 58676c0a398f..dba6fb47aa6c 100644 --- a/include/linux/io_uring.h +++ b/include/linux/io_uring.h @@ -4,6 +4,7 @@ #include #include +#include enum io_uring_cmd_flags { IO_URING_F_COMPLETE_DEFER = 1, @@ -32,6 +33,8 @@ struct io_uring_cmd { }; #if defined(CONFIG_IO_URING) +int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len, int rw, + struct iov_iter *iter, void *ioucmd); void io_uring_cmd_done(struct io_uring_cmd *cmd, ssize_t ret, ssize_t res2); void io_uring_cmd_complete_in_task(struct io_uring_cmd *ioucmd, void (*task_work_cb)(struct io_uring_cmd *)); @@ -59,6 +62,11 @@ static inline void io_uring_free(struct task_struct *tsk) __io_uring_free(tsk); } #else +int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len, int rw, + struct iov_iter *iter, void *ioucmd) +{ + return -1; +} static inline void io_uring_cmd_done(struct io_uring_cmd *cmd, ssize_t ret, ssize_t ret2) { diff --git a/io_uring/uring_cmd.c b/io_uring/uring_cmd.c index 6f99dbd5d550..8cddd18ad10b 100644 --- a/io_uring/uring_cmd.c +++ b/io_uring/uring_cmd.c @@ -7,6 +7,7 @@ #include #include "io_uring.h" +#include "rsrc.h" #include "uring_cmd.h" static void io_uring_cmd_work(struct io_kiocb *req, bool *locked) @@ -124,3 +125,13 @@ int io_uring_cmd(struct io_kiocb *req, unsigned int issue_flags) return IOU_ISSUE_SKIP_COMPLETE; } + +int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len, + int rw, struct iov_iter *iter, void *ioucmd) +{ + struct io_kiocb *req = cmd_to_io_kiocb(ioucmd); + struct io_mapped_ubuf *imu = req->imu; + + return io_import_fixed(rw, iter, imu, ubuf, len); +} +EXPORT_SYMBOL_GPL(io_uring_cmd_import_fixed); -- 2.25.1