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Thu, 29 Jan 2026 22:12:43 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id UHOdAFvbe2kvcAAAD6G6ig (envelope-from ); Thu, 29 Jan 2026 22:12:43 +0000 From: Gabriel Krisman Bertazi To: axboe@kernel.dk Cc: io-uring@vger.kernel.org, Gabriel Krisman Bertazi Subject: [PATCH liburing 1/2] liburing: Add support to IORING_OP_MMAP Date: Thu, 29 Jan 2026 17:12:35 -0500 Message-ID: <20260129221236.898135-2-krisman@suse.de> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260129221236.898135-1-krisman@suse.de> References: <20260129221236.898135-1-krisman@suse.de> Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spamd-Result: default: False [-2.80 / 50.00]; BAYES_HAM(-3.00)[100.00%]; NEURAL_HAM_LONG(-1.00)[-1.000]; MID_CONTAINS_FROM(1.00)[]; R_MISSING_CHARSET(0.50)[]; NEURAL_HAM_SHORT(-0.20)[-0.999]; MIME_GOOD(-0.10)[text/plain]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FROM_HAS_DN(0.00)[]; ARC_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; TO_DN_SOME(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[imap1.dmz-prg2.suse.org:helo,suse.de:mid,suse.de:email]; RCVD_VIA_SMTP_AUTH(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; FUZZY_RATELIMITED(0.00)[rspamd.com]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; RCPT_COUNT_THREE(0.00)[3]; RCVD_TLS_ALL(0.00)[] X-Spam-Flag: NO X-Spam-Score: -2.80 X-Spam-Level: Signed-off-by: Gabriel Krisman Bertazi --- src/include/liburing.h | 8 ++++++++ src/include/liburing/io_uring.h | 10 ++++++++++ src/liburing-ffi.map | 2 ++ 3 files changed, 20 insertions(+) diff --git a/src/include/liburing.h b/src/include/liburing.h index 861e9673..903c60b7 100644 --- a/src/include/liburing.h +++ b/src/include/liburing.h @@ -1669,6 +1669,14 @@ IOURINGINLINE void io_uring_prep_pipe(struct io_uring_sqe *sqe, int *fds, sqe->pipe_flags = (__u32) pipe_flags; } +IOURINGINLINE void io_uring_prep_mmap(struct io_uring_sqe *sqe, int fd, + struct io_uring_mmap_desc *descs, + int nr_maps, int flags) +{ + io_uring_prep_rw(IORING_OP_MMAP, sqe, fd, descs, nr_maps, 0); + sqe->mmap_flags = flags; +} + /* setup pipe directly into the fixed file table */ IOURINGINLINE void io_uring_prep_pipe_direct(struct io_uring_sqe *sqe, int *fds, int pipe_flags, diff --git a/src/include/liburing/io_uring.h b/src/include/liburing/io_uring.h index 3e88e796..2e1ac37d 100644 --- a/src/include/liburing/io_uring.h +++ b/src/include/liburing/io_uring.h @@ -74,6 +74,7 @@ struct io_uring_sqe { __u32 install_fd_flags; __u32 nop_flags; __u32 pipe_flags; + __u32 mmap_flags; }; __u64 user_data; /* data to be passed back at completion time */ /* pack this to avoid bogus arm OABI complaints */ @@ -311,6 +312,7 @@ enum io_uring_op { IORING_OP_PIPE, IORING_OP_NOP128, IORING_OP_URING_CMD128, + IORING_OP_MMAP, /* this goes last, obviously */ IORING_OP_LAST, @@ -1069,6 +1071,14 @@ struct io_uring_zcrx_ifq_reg { __u64 __resv[3]; }; +struct io_uring_mmap_desc { + void *addr; + unsigned long len; + unsigned long pgoff; + unsigned int prot; + unsigned int flags; +}; + #ifdef __cplusplus } #endif diff --git a/src/liburing-ffi.map b/src/liburing-ffi.map index 7202ffd0..b16de5aa 100644 --- a/src/liburing-ffi.map +++ b/src/liburing-ffi.map @@ -264,4 +264,6 @@ LIBURING_2.13 { LIBURING_2.14 { global: io_uring_register_task_restrictions; + io_uring_prep_mmap; + } LIBURING_2.13; -- 2.52.0