Copyright (C) 2022 Jens Axboe <[email protected]>
SPDX-License-Identifier: LGPL-2.0-or-later
SPDX-License-Identifier: LGPL-2.0-or-later
io_uring_prep_madvise 3 "March 13, 2022" "liburing-2.2" "liburing Manual"
NAME
io_uring_prep_madvise - prepare a madvise request
SYNOPSIS
#include <sys/mman.h> #include <liburing.h>"void io_uring_prep_madvise(struct io_uring_sqe *" sqe "," " void *" addr "," " off_t " len "," " int " advice ");"
DESCRIPTION
The io_uring_prep_madvise (3) function prepares an madvise request. The submission queue entry sqe is setup to start an madvise operation at the virtual address of addr and of len length in bytes, giving it the advise located in advice . This function prepares an async madvise (2) request. See that man page for details.
RETURN VALUE
None
ERRORS
The CQE
res field will contain the result of the operation. See the related man page for
details on possible values. Note that where synchronous system calls will return
-1 on failure and set
errno to the actual error value, io_uring never uses
errno . Instead it returns the negated
errno directly in the CQE
res field.
SEE ALSO
io_uring_get_sqe (3), io_uring_submit (3), io_uring_register (2), madvise (2)