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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | NOTES | SEE ALSO | COLOPHON |
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io_uring_submit(3) liburing Manual io_uring_submit(3)
io_uring_submit - submit requests to the submission queue
#include <liburing.h>
int io_uring_submit(struct io_uring *ring);
The io_uring_submit(3) function submits the next events to the
submission queue belonging to the ring.
After the caller retrieves a submission queue entry (SQE) with
io_uring_get_sqe(3) and prepares the SQE using one of the
provided helpers, it can be submitted with io_uring_submit(3).
On success io_uring_submit(3) returns the number of submitted
submission queue entries. On failure it returns -errno.
For any request that passes in data in a struct, that data must
remain valid until the request has been successfully submitted.
It need not remain valid until completion. Once a request has
been submitted, the in-kernel state is stable. Very early kernels
(5.4 and earlier) required state to be stable until the
completion occurred. Applications can test for this behavior by
inspecting the IORING_FEAT_SUBMIT_STABLE flag passed back from
io_uring_queue_init_params(3). In general, the man pages for the
individual prep helpers will have a note mentioning this fact as
well, if required for the given command.
io_uring_get_sqe(3), io_uring_submit_and_wait(3),
io_uring_submit_and_wait_timeout(3)
This page is part of the liburing (A library for io_uring)
project. Information about the project can be found at
⟨https://github.com/axboe/liburing⟩. If you have a bug report for
this manual page, send it to io-uring@vger.kernel.org. This page
was obtained from the project's upstream Git repository
⟨https://github.com/axboe/liburing⟩ on 2022-12-17. (At that
time, the date of the most recent commit that was found in the
repository was 2022-12-12.) If you discover any rendering
problems in this HTML version of the page, or you believe there
is a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
liburing-2.1 November 15, 2021 io_uring_submit(3)
Pages that refer to this page: io_uring_setup(2), io_uring_cq_advance(3), io_uring_cqe_seen(3), io_uring_cq_ready(3), io_uring_get_sqe(3), io_uring_peek_cqe(3), io_uring_prep_accept(3), io_uring_prep_accept_direct(3), io_uring_prep_cancel(3), io_uring_prep_cancel64(3), io_uring_prep_close(3), io_uring_prep_close_direct(3), io_uring_prep_connect(3), io_uring_prep_fadvise(3), io_uring_prep_fallocate(3), io_uring_prep_files_update(3), io_uring_prep_fsync(3), io_uring_prep_link(3), io_uring_prep_linkat(3), io_uring_prep_madvise(3), io_uring_prep_mkdir(3), io_uring_prep_mkdirat(3), io_uring_prep_multishot_accept(3), io_uring_prep_multishot_accept_direct(3), io_uring_prep_nop(3), io_uring_prep_openat2(3), io_uring_prep_openat2_direct(3), io_uring_prep_openat(3), io_uring_prep_openat_direct(3), io_uring_prep_poll_add(3), io_uring_prep_poll_multishot(3), io_uring_prep_poll_remove(3), io_uring_prep_poll_update(3), io_uring_prep_provide_buffers(3), io_uring_prep_read(3), io_uring_prep_readv2(3), io_uring_prep_readv(3), io_uring_prep_recv(3), io_uring_prep_recvmsg(3), io_uring_prep_recvmsg_multishot(3), io_uring_prep_recv_multishot(3), io_uring_prep_remove_buffers(3), io_uring_prep_rename(3), io_uring_prep_renameat(3), io_uring_prep_send(3), io_uring_prep_sendmsg(3), io_uring_prep_send_zc(3), io_uring_prep_shutdown(3), io_uring_prep_socket(3), io_uring_prep_socket_direct(3), io_uring_prep_socket_direct_alloc(3), io_uring_prep_splice(3), io_uring_prep_statx(3), io_uring_prep_symlink(3), io_uring_prep_symlinkat(3), io_uring_prep_sync_file_range(3), io_uring_prep_tee(3), io_uring_prep_timeout(3), io_uring_prep_timeout_remove(3), io_uring_prep_timeout_update(3), io_uring_prep_unlink(3), io_uring_prep_unlinkat(3), io_uring_prep_write(3), io_uring_prep_writev2(3), io_uring_prep_writev(3), io_uring_sqe_set_flags(3), io_uring_sqring_wait(3), io_uring_submit(3), io_uring_submit_and_get_events(3), io_uring_submit_and_wait(3), io_uring_submit_and_wait_timeout(3), io_uring_wait_cqe(3), io_uring_wait_cqe_nr(3), io_uring_wait_cqes(3), io_uring_wait_cqe_timeout(3)
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