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.\" Copyright (C) 2022 Jens Axboe <axboe@kernel.dk>
.\"
.\" SPDX-License-Identifier: LGPL-2.0-or-later
.\"
.TH io_uring_prep_poll_remove 3 "March 12, 2022" "liburing-2.2" "liburing Manual"
.SH NAME
io_uring_prep_poll_remove \- prepare a poll deletion request
.SH SYNOPSIS
.nf
.B #include <liburing.h>
.PP
.BI "void io_uring_prep_poll_remove(struct io_uring_sqe *" sqe ","
.BI " __u64 " user_data ");"
.BI "
.fi
.SH DESCRIPTION
.PP
The
.BR io_uring_prep_poll_remove (3)
function prepares a poll removal request. The submission queue entry
.I sqe
is setup to remove a poll request identified by
.I user_data
Works like
.BR io_uring_prep_cancel (3)
except only looks for poll requests. Apart from that, behavior is identical.
See that man page for specific details.
.SH RETURN VALUE
None
.SH ERRORS
These are the errors that are reported in the CQE
.I res
field. On success,
.B 0
is returned.
.TP
.B -ENOENT
The request identified by
.I user_data
could not be located. This could be because it completed before the cancelation
request was issued, or if an invalid identifier is used.
.TP
.B -EINVAL
One of the fields set in the SQE was invalid.
.TP
.B -EALREADY
The execution state of the request has progressed far enough that cancelation
is no longer possible. This should normally mean that it will complete shortly,
either successfully, or interrupted due to the cancelation.
.SH SEE ALSO
.BR io_uring_get_sqe (3),
.BR io_uring_submit (3),
.BR io_uring_prep_cancel (3)
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