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([61.83.209.48]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-737115512f0sm4673013b3a.49.2025.03.15.10.23.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 15 Mar 2025 10:23:56 -0700 (PDT) From: Sidong Yang To: Josef Bacik , David Sterba , Jens Axboe , Pavel Begunkov Cc: linux-btrfs@vger.kernel.org, linux-kernel@vger.kernel.org, io-uring@vger.kernel.org, Sidong Yang Subject: [RFC PATCH v3 2/3] io-uring/cmd: introduce io_uring_cmd_import_fixed_vec Date: Sat, 15 Mar 2025 17:23:18 +0000 Message-ID: <20250315172319.16770-3-sidong.yang@furiosa.ai> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250315172319.16770-1-sidong.yang@furiosa.ai> References: <20250315172319.16770-1-sidong.yang@furiosa.ai> Precedence: bulk X-Mailing-List: linux-btrfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 io_uring_cmd_import_fixed_vec() could be used for using multiple fixed buffer in uring_cmd callback. Signed-off-by: Sidong Yang --- include/linux/io_uring/cmd.h | 14 ++++++++++++++ io_uring/uring_cmd.c | 19 +++++++++++++++++++ 2 files changed, 33 insertions(+) diff --git a/include/linux/io_uring/cmd.h b/include/linux/io_uring/cmd.h index 74b9f0aec229..2c7ae8474a56 100644 --- a/include/linux/io_uring/cmd.h +++ b/include/linux/io_uring/cmd.h @@ -45,6 +45,12 @@ int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len, int rw, struct io_uring_cmd *ioucmd, unsigned int issue_flags); +int io_uring_cmd_import_fixed_vec(struct io_uring_cmd *ioucmd, + const struct iovec __user *uvec, + unsigned long uvec_segs, int ddir, + unsigned int issue_flags, + struct iov_iter *iter); + /* * Completes the request, i.e. posts an io_uring CQE and deallocates @ioucmd * and the corresponding io_uring request. @@ -77,6 +83,14 @@ io_uring_cmd_import_fixed(u64 ubuf, unsigned long len, int rw, { return -EOPNOTSUPP; } +int io_uring_cmd_import_fixed_vec(struct io_uring_cmd *ioucmd, + const struct iovec __user *uvec, + unsigned long uvec_segs, int ddir, + unsigned int issue_flags, + struct iov_iter *iter) +{ + return -EOPNOTSUPP; +} static inline void io_uring_cmd_done(struct io_uring_cmd *cmd, ssize_t ret, u64 ret2, unsigned issue_flags) { diff --git a/io_uring/uring_cmd.c b/io_uring/uring_cmd.c index 315c603cfdd4..e2bf9edca9df 100644 --- a/io_uring/uring_cmd.c +++ b/io_uring/uring_cmd.c @@ -267,6 +267,25 @@ int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len, int rw, } EXPORT_SYMBOL_GPL(io_uring_cmd_import_fixed); +int io_uring_cmd_import_fixed_vec(struct io_uring_cmd *ioucmd, + const struct iovec __user *uvec, + unsigned long uvec_segs, int ddir, + unsigned int issue_flags, + struct iov_iter *iter) +{ + struct io_kiocb *req = cmd_to_io_kiocb(ioucmd); + struct io_uring_cmd_data *cache = req->async_data; + int ret; + + ret = io_prep_reg_iovec(req, &cache->iou_vec, uvec, uvec_segs); + if (ret) + return ret; + + return io_import_reg_vec(ddir, iter, req, &cache->iou_vec, + cache->iou_vec.nr, issue_flags); +} +EXPORT_SYMBOL_GPL(io_uring_cmd_import_fixed_vec); + void io_uring_cmd_issue_blocking(struct io_uring_cmd *ioucmd) { struct io_kiocb *req = cmd_to_io_kiocb(ioucmd);