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.\" Copyright (C) 2022 Jens Axboe <axboe@kernel.dk> .\" .\" SPDX-License-Identifier: LGPL-2.0-or-later .\" .TH io_uring_prep_madvise 3 "March 13, 2022" "liburing-2.2" "liburing Manual" .SH NAME io_uring_prep_madvise \- prepare a madvise request .SH SYNOPSIS .nf .B #include <sys/mman.h> .B #include <liburing.h> .PP .BI "void io_uring_prep_madvise(struct io_uring_sqe *" sqe "," .BI " void *" addr "," .BI " off_t " len "," .BI " int " advice ");" .fi .SH DESCRIPTION .PP The .BR io_uring_prep_madvise (3) function prepares an madvise request. The submission queue entry .I sqe is setup to start an madvise operation at the virtual address of .I addr and of .I len length in bytes, giving it the advise located in .IR advice . This function prepares an async .BR madvise (2) request. See that man page for details. .SH RETURN VALUE None .SH ERRORS The CQE .I 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 .B -1 on failure and set .I errno to the actual error value, io_uring never uses .IR errno . Instead it returns the negated .I errno directly in the CQE .I res field. .SH SEE ALSO .BR io_uring_get_sqe (3), .BR io_uring_submit (3), .BR io_uring_register (2), .BR madvise (2)
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13 entries across 13 versions & 1 rubygems