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Tue, 06 Oct 2026 18:43:28 -0700 (PDT) From: Pavel Begunkov To: linux-block@vger.kernel.org Cc: asml.silence@gmail.com, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, linux-nvme@lists.infradead.org, linux-fsdevel@vger.kernel.org, io-uring@vger.kernel.org, Christoph Hellwig , Sumit Semwal , =?UTF-8?q?Christian=20K=C3=B6nig?= , Keith Busch , Sagi Grimberg , Alexander Viro , Christian Brauner , Jan Kara , Andrew Morton , Jens Axboe , Nitesh Shetty , Kanchan Joshi , Anuj Gupta , Tushar Gohad , William Power , Matthew Brost , Alasdair Kergon , Mike Snitzer , Mikulas Patocka , Benjamin Marzinski , dm-devel@lists.linux.dev Subject: [PATCH v9 12/13] io_uring/rsrc: add regbuf import flags Date: Wed, 7 Oct 2026 02:42:55 +0100 Message-ID: <97d5632343330131e3de5874e482ce5dfa341f99.1791336930.git.asml.silence@gmail.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit We'll have special registered buffer types that can't be used with all opcodes and need special handling. Add separate flags to control registered buffer import, which will be used to specify what kind of buffers the caller can handle. Signed-off-by: Pavel Begunkov --- io_uring/rsrc.c | 8 ++++---- io_uring/rsrc.h | 24 ++++++++++++++++++++---- 2 files changed, 24 insertions(+), 8 deletions(-) diff --git a/io_uring/rsrc.c b/io_uring/rsrc.c index 6930a6897b41..6e4fe70b316f 100644 --- a/io_uring/rsrc.c +++ b/io_uring/rsrc.c @@ -1315,9 +1315,9 @@ inline struct io_rsrc_node *io_find_buf_node(struct io_kiocb *req, return NULL; } -int io_import_reg_buf(struct io_kiocb *req, struct iov_iter *iter, +int __io_import_reg_buf(struct io_kiocb *req, struct iov_iter *iter, u64 buf_addr, size_t len, int ddir, - unsigned issue_flags) + unsigned issue_flags, unsigned import_flags) { struct io_rsrc_node *node; @@ -1731,9 +1731,9 @@ static int io_kern_bvec_size(struct iovec *iov, unsigned nr_iovs, return 0; } -int io_import_reg_vec(int ddir, struct iov_iter *iter, +int __io_import_reg_vec(int ddir, struct iov_iter *iter, struct io_kiocb *req, struct iou_vec *vec, - unsigned nr_iovs, unsigned issue_flags) + unsigned nr_iovs, unsigned issue_flags, unsigned import_flags) { struct io_rsrc_node *node; struct io_mapped_ubuf *imu; diff --git a/io_uring/rsrc.h b/io_uring/rsrc.h index 73d7b1ebf0b6..351995b61e68 100644 --- a/io_uring/rsrc.h +++ b/io_uring/rsrc.h @@ -62,12 +62,28 @@ int io_rsrc_data_alloc(struct io_rsrc_data *data, unsigned nr); struct io_rsrc_node *io_find_buf_node(struct io_kiocb *req, unsigned issue_flags); -int io_import_reg_buf(struct io_kiocb *req, struct iov_iter *iter, +int __io_import_reg_buf(struct io_kiocb *req, struct iov_iter *iter, u64 buf_addr, size_t len, int ddir, - unsigned issue_flags); -int io_import_reg_vec(int ddir, struct iov_iter *iter, + unsigned issue_flags, unsigned import_flags); +int __io_import_reg_vec(int ddir, struct iov_iter *iter, struct io_kiocb *req, struct iou_vec *vec, - unsigned nr_iovs, unsigned issue_flags); + unsigned nr_iovs, unsigned issue_flags, + unsigned import_flags); + +static inline int io_import_reg_buf(struct io_kiocb *req, struct iov_iter *iter, + u64 buf_addr, size_t len, int ddir, + unsigned issue_flags) +{ + return __io_import_reg_buf(req, iter, buf_addr, len, ddir, issue_flags, 0); +} + +static inline int io_import_reg_vec(int ddir, struct iov_iter *iter, + struct io_kiocb *req, struct iou_vec *vec, + unsigned nr_iovs, unsigned issue_flags) +{ + return __io_import_reg_vec(ddir, iter, req, vec, nr_iovs, issue_flags, 0); +} + int io_prep_reg_iovec(struct io_kiocb *req, struct iou_vec *iv, const struct iovec __user *uvec, size_t uvec_segs); -- 2.54.0