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Sat, 20 Aug 2022 12:17:05 +0900 (KST) Received: from epsmtrp2.samsung.com (unknown [182.195.40.14]) by epcas5p3.samsung.com (KnoxPortal) with ESMTPA id 20220820031704epcas5p36bf7895aa5e5f8d43384c6de355a70bc~M70DplPqD1841318413epcas5p3I; Sat, 20 Aug 2022 03:17:04 +0000 (GMT) Received: from epsmgms1p2.samsung.com (unknown [182.195.42.42]) by epsmtrp2.samsung.com (KnoxPortal) with ESMTP id 20220820031704epsmtrp24667b060f651df782d8b9563e264c33b~M70DorJJY0249702497epsmtrp2M; Sat, 20 Aug 2022 03:17:04 +0000 (GMT) X-AuditID: b6c32a4a-201ff70000012516-98-63005231faad Received: from epsmtip1.samsung.com ( [182.195.34.30]) by epsmgms1p2.samsung.com (Symantec Messaging Gateway) with SMTP id 03.12.08802.03250036; Sat, 20 Aug 2022 12:17:04 +0900 (KST) Received: from localhost.localdomain (unknown [107.110.206.5]) by epsmtip1.samsung.com (KnoxPortal) with ESMTPA id 20220820031703epsmtip13fce5cd82c118468e6b34361096d3549~M70CN-qLp1949119491epsmtip1W; Sat, 20 Aug 2022 03:17:03 +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, ming.lei@redhat.com, gost.dev@samsung.com, Anuj Gupta , Kanchan Joshi Subject: [PATCH for-next v2 1/4] io_uring: introduce io_uring_cmd_import_fixed Date: Sat, 20 Aug 2022 08:36:17 +0530 Message-Id: <20220820030620.59003-2-joshi.k@samsung.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220820030620.59003-1-joshi.k@samsung.com> MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprBJsWRmVeSWpSXmKPExsWy7bCmhq5hEEOyQVMnl0XThL/MFqvv9rNZ 3Dywk8li5eqjTBbvWs+xWBz9/5bNYtKha4wWe29pW8xf9pTd4tDkZiYHLo/LZ0s9Nq3qZPPY vKTeY/fNBjaP9/uusnn0bVnF6PF5k1wAe1S2TUZqYkpqkUJqXnJ+SmZeuq2Sd3C8c7ypmYGh rqGlhbmSQl5ibqqtkotPgK5bZg7QcUoKZYk5pUChgMTiYiV9O5ui/NKSVIWM/OISW6XUgpSc ApMCveLE3OLSvHS9vNQSK0MDAyNToMKE7IwnryILzvNXtK7tYGpgnMTbxcjBISFgItHy2LqL kYtDSGA3o8T84z3MEM4nRolVn/6zQjifGSVePWxm6WLkBOvYurWXHSKxi1HifsceNriq55t+ sYLMZRPQlLgwuRSkQUTASGL/p5Ngk5gFLjBKnGz6ygySEBYIkDgzfQEjiM0ioCpx4exPVhCb V8BC4veEA+wQ2+QlZl76DmZzClhKNC3/zQhRIyhxcuYTsIuYgWqat84Gu1tCoJVDYsfi94wQ zS4SjYcXMEPYwhKvjm+BGiol8fndXjYIO1ni0sxzTBB2icTjPQehbHuJ1lP9zCDPMAM9s36X PsQuPone30+YIGHHK9HRJgRRrShxb9JTVghbXOLhjCVQtofEhgmvoeHTwyjxuHMi2wRG+VlI XpiF5IVZCNsWMDKvYpRMLSjOTU8tNi0wyksth8drcn7uJkZwEtXy2sH48MEHvUOMTByMhxgl OJiVRHhv3PmTJMSbklhZlVqUH19UmpNafIjRFBjGE5mlRJPzgWk8ryTe0MTSwMTMzMzE0tjM UEmc1+vqpiQhgfTEktTs1NSC1CKYPiYOTqkGJm6X/W58JY7tssz7Pzx8u1xdOnX1iU9b+A9I fd93Wlmo/ntjvVBNIu+OjX8FNgVvKJxipbT/d8GfmmPnvmT92TorN3TTpdnHlr1+zfRF/72d 48qST87bmi+sU5804VOxLccf0bXSfhHm3c7zHmQceOBc+lGmT1zAauPUDS9X2upvn65Q6zMn vWia9jGBXrdibqNmvsiDzcfKnol25W3/zp4/Key4+PH6ezP5BI43xTYufBXyprv2xYzYB8wf wvX0NlXLeXKYycQ8sE/59CUtu6L6g+TLt9Lu2wM619Zt3aeXGxhgc0wmqm1VqI56hp3VCbvd m5iLjoa0sO77br9WSq58eRfvDVutE315x/LNlFiKMxINtZiLihMBzhCIyisEAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrFLMWRmVeSWpSXmKPExsWy7bCSnK5BEEOyQds/ZYumCX+ZLVbf7Wez uHlgJ5PFytVHmSzetZ5jsTj6/y2bxaRD1xgt9t7Stpi/7Cm7xaHJzUwOXB6Xz5Z6bFrVyeax eUm9x+6bDWwe7/ddZfPo27KK0ePzJrkA9igum5TUnMyy1CJ9uwSujCevIgvO81e0ru1gamCc xNvFyMkhIWAisXVrLzuILSSwg1Hi6hlZiLi4RPO1H+wQtrDEyn/PgWwuoJqPjBJNHe9Zuxg5 ONgENCUuTC4FqRERMJNYengNC4jNLHCDUWLbhHwQW1jAT+LX+71sIDaLgKrEhbM/WUFsXgEL id8TDkDNl5eYeek7mM0pYCnRtPw3I8Q9FhLPZ79gg6gXlDg58wnUfHmJ5q2zmScwCsxCkpqF JLWAkWkVo2RqQXFuem6xYYFRXmq5XnFibnFpXrpecn7uJkZw8Gtp7WDcs+qD3iFGJg7GQ4wS HMxKIrw37vxJEuJNSaysSi3Kjy8qzUktPsQozcGiJM57oetkvJBAemJJanZqakFqEUyWiYNT qoEpoSxvps+qc4Z8Zea/3EPW73l7JknP4s9Ns7OF1lxFj1acXNC9/rLFAeY9vban+dmLwwob 39z8J17xRipX0mPmc8tjl+pnqTBe4OmtCWJZuUj1e+RugU+nqo9mO/07dWp61JZ3b3ZuSC3V LFX5qTFDmHOfROo8hrL9Srdm3PsZsvHDPY3TL006Ft5pXXhOkfP4tbvNU58LHtynyLWiX/Ph Lq/AiUEVjJkugQ3aXvLL932seRW06Grm518z1LM3/ljD2xwnfPXtPotl7V+6XzI+W7mJd4XU 40KnhxaWHwq084/W7lN4lLLsiHXSd7mj038InfnIXjk3zEPed3WG51lzf8vWtpg98lUagY2W TZ+MlFiKMxINtZiLihMBigT5PO0CAAA= X-CMS-MailID: 20220820031704epcas5p36bf7895aa5e5f8d43384c6de355a70bc X-Msg-Generator: CA CMS-TYPE: 105P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20220820031704epcas5p36bf7895aa5e5f8d43384c6de355a70bc References: <20220820030620.59003-1-joshi.k@samsung.com> Precedence: bulk List-ID: X-Mailing-List: linux-block@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 | 7 +++++++ io_uring/uring_cmd.c | 10 ++++++++++ 2 files changed, 17 insertions(+) diff --git a/include/linux/io_uring.h b/include/linux/io_uring.h index 58676c0a398f..60aba10468fc 100644 --- a/include/linux/io_uring.h +++ b/include/linux/io_uring.h @@ -32,6 +32,8 @@ 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 +61,11 @@ 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 8900856fa588..ff65cc8ab6cc 100644 --- a/io_uring/uring_cmd.c +++ b/io_uring/uring_cmd.c @@ -121,3 +121,13 @@ 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 = container_of(ioucmd, struct io_kiocb, uring_cmd); + struct io_mapped_ubuf *imu = req->imu; + + return io_import_fixed(rw, iter, imu, ubuf, len); +} +EXPORT_SYMBOL_GPL(io_uring_cmd_import_fixed);