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Fri, 23 Sep 2022 18:39:11 +0900 (KST) Received: from epsmtrp2.samsung.com (unknown [182.195.40.14]) by epcas5p2.samsung.com (KnoxPortal) with ESMTPA id 20220923093910epcas5p2624d93c6cb5caebb5f9203a1b8f4f5b1~Xc9YLx7H10642806428epcas5p2N; Fri, 23 Sep 2022 09:39:10 +0000 (GMT) Received: from epsmgms1p2.samsung.com (unknown [182.195.42.42]) by epsmtrp2.samsung.com (KnoxPortal) with ESMTP id 20220923093910epsmtrp2bae60d8f0d587a644ccb51b87a0ca903~Xc9YLBRyN1242312423epsmtrp2r; Fri, 23 Sep 2022 09:39:10 +0000 (GMT) X-AuditID: b6c32a49-0c7ff70000016970-32-632d7ebf4c8e Received: from epsmtip2.samsung.com ( [182.195.34.31]) by epsmgms1p2.samsung.com (Symantec Messaging Gateway) with SMTP id 04.37.18644.EBE7D236; Fri, 23 Sep 2022 18:39:10 +0900 (KST) Received: from localhost.localdomain (unknown [107.110.206.5]) by epsmtip2.samsung.com (KnoxPortal) with ESMTPA id 20220923093908epsmtip286d258d6baaf3a99162cb51a343e44c2~Xc9WiIe1N2720527205epsmtip26; Fri, 23 Sep 2022 09:39:08 +0000 (GMT) From: Kanchan Joshi To: axboe@kernel.dk, hch@lst.de, kbusch@kernel.org 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 v8 1/5] io_uring: add io_uring_cmd_import_fixed Date: Fri, 23 Sep 2022 14:58:50 +0530 Message-Id: <20220923092854.5116-2-joshi.k@samsung.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220923092854.5116-1-joshi.k@samsung.com> MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFupjk+LIzCtJLcpLzFFi42LZdlhTU3d/nW6ywaItshZNE/4yW6y+289m cfPATiaLlauPMlm8az3HYnH0/1s2i0mHrjFa7L2lbTF/2VN2B06Py2dLPTat6mTz2Lyk3mP3 zQY2j74tqxg9Pm+SC2CLyrbJSE1MSS1SSM1Lzk/JzEu3VfIOjneONzUzMNQ1tLQwV1LIS8xN tVVy8QnQdcvMATpJSaEsMacUKBSQWFyspG9nU5RfWpKqkJFfXGKrlFqQklNgUqBXnJhbXJqX rpeXWmJlaGBgZApUmJCd8X/WTKaCVUIVL19/ZWpgnMvfxcjJISFgIvGl9xgriC0ksJtRYusX 7S5GLiD7E6PEy+7fzBDOZ0aJlrsvGWE6Dp5cDpXYxShxd+ZBVriq//c2snUxcnCwCWhKXJhc CtIgImAksf/TSbAaZpAVb280soPUCAt4SHxYaQdSwyKgKrGwZSIziM0rYC6x988tZohl8hIz L31nB7E5BSwkFm2+xQRRIyhxcuYTFhCbGaimeetssIMkBP6yS3w7MA+q2UVi950uNghbWOLV 8S3sELaUxOd3e6HiyRKXZp5jgrBLJB7vOQhl20u0nupnBrmTGeiX9bv0IXbxSfT+fsIEEpYQ 4JXoaBOCqFaUuDfpKSuELS7xcMYSKNtD4nbnWTZI8HQzSqz4/ZFpAqP8LCQvzELywiyEbQsY mVcxSqYWFOempxabFhjmpZbD4zU5P3cTIzhhannuYLz74IPeIUYmDsZDjBIczEoivLPvaCYL 8aYkVlalFuXHF5XmpBYfYjQFhvFEZinR5Hxgys4riTc0sTQwMTMzM7E0NjNUEuddPEMrWUgg PbEkNTs1tSC1CKaPiYNTqoHJ5tVBnyrRd9kbdC02CG9o8dIsjq946reh+kFbVMtF1Tm9CV2f 1+XGnL78Rmtaq2D+i8UdTU969BZOq1z8vuf+TW4X0QPMJnUsn91VeGsnbbHebZHDeaDW+7Fh TPkTAwclOWVRrqo6OcX+Hf/jOQo41/WvNJD6MEPrj940FUn+7gmc6XaGJiU7vx/hXfpQ+dv+ 7KhPb/hYX/e2pF1m2WzuzsgYvskmvDeHf/WN2/yWgbHL93L3rZtvVdZiOvNrGc/ZOJ2th9q2 dnA/zZ17ImXawzXGkfITRTo+mzTJNbtr8Z7RyMkOcshzNBFnaGjUZ1XuE+Z9f/e2uBuvoPr+ BVsLtF17leLbr6k38FQpsRRnJBpqMRcVJwIAZQAabiEEAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrELMWRmVeSWpSXmKPExsWy7bCSvO6+Ot1kg53vRC2aJvxltlh9t5/N 4uaBnUwWK1cfZbJ413qOxeLo/7dsFpMOXWO02HtL22L+sqfsDpwel8+Wemxa1cnmsXlJvcfu mw1sHn1bVjF6fN4kF8AWxWWTkpqTWZZapG+XwJXxf9ZMpoJVQhUvX39lamCcy9/FyMkhIWAi cfDkcuYuRi4OIYEdjBJbdz1mh0iISzRf+wFlC0us/PecHaLoI6PEjuXvgRwODjYBTYkLk0tB akQEzCSWHl7DAlLDLHCQUeLysycsIDXCAh4SH1bagdSwCKhKLGyZyAxi8wqYS+z9c4sZYr68 xMxL38F2cQpYSCzafIsJxBYCqvlx6QUjRL2gxMmZICM5gebLSzRvnc08gVFgFpLULCSpBYxM qxglUwuKc9Nziw0LjPJSy/WKE3OLS/PS9ZLzczcxgoNdS2sH455VH/QOMTJxMB5ilOBgVhLh nX1HM1mINyWxsiq1KD++qDQntfgQozQHi5I474Wuk/FCAumJJanZqakFqUUwWSYOTqkGJkkl /rDf/33Xvbpeuf0R/8b2RqNK6Ye8je1dyzbIZ1w6d2ae5bqgja+THadvz+jq5G6/aRGefL74 4h+B+K54/907lKX/Fn/WuSGRx3hgdrXThg17Ly132PXMI5GdOVApNvHHmsAClarpvCoZuR3J KfKR7np8Bm5mM1sTMt6GrFa8rrwg5rj5v+lb3l1Wu+igqhRx3XJ2b89eqYzFqU1pEx7P6nO9 tKtlfgSXBpNtrERQZ/vcV4x7JzAnrtyUYbXxbdCFP/M8vFZdyLjxreVMwHbFUsXkR1ZlfxN8 xR+Jb/h62SDU+m+GVhWn/cLHqQbmb2NPHCl5t2DmF543Aa5771csirl49twevVPdU67eVGIp zkg01GIuKk4EABl4Gh/lAgAA X-CMS-MailID: 20220923093910epcas5p2624d93c6cb5caebb5f9203a1b8f4f5b1 X-Msg-Generator: CA CMS-TYPE: 105P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20220923093910epcas5p2624d93c6cb5caebb5f9203a1b8f4f5b1 References: <20220923092854.5116-1-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 | 10 ++++++++++ 2 files changed, 18 insertions(+) diff --git a/include/linux/io_uring.h b/include/linux/io_uring.h index 58676c0a398f..1dbf51115c30 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 +static int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len, int rw, + struct iov_iter *iter, void *ioucmd) +{ + return -EOPNOTSUPP; +} 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 f3ed61e9bd0f..6a6d69523d75 100644 --- a/io_uring/uring_cmd.c +++ b/io_uring/uring_cmd.c @@ -8,6 +8,7 @@ #include #include "io_uring.h" +#include "rsrc.h" #include "uring_cmd.h" static void io_uring_cmd_work(struct io_kiocb *req, bool *locked) @@ -129,3 +130,12 @@ 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); + + return io_import_fixed(rw, iter, req->imu, ubuf, len); +} +EXPORT_SYMBOL_GPL(io_uring_cmd_import_fixed);