UFFDIO_UNREGISTER(2const) UFFDIO_UNREGISTER(2const)
NAME
UFFDIO_UNREGISTER - unregister a memory address range from userfaultfd
LIBRARY
Standard C library (libc, -lc)
SYNOPSIS
#include <linux/userfaultfd.h> /* Definition of UFFD* constants */
#include <sys/ioctl.h>
int ioctl(int fd, UFFDIO_UNREGISTER, const struct uffdio_range *argp);
DESCRIPTION
Unregister a memory address range from userfaultfd. The pages in the
range must be “compatible” (see UFFDIO_REGISTER(2const)).
RETURN VALUE
On success, 0 is returned. On error, -1 is returned and errno is set to
indicate the error.
ERRORS
EINVAL Either argp->start or the argp->len fields was not a multiple of
the system page size; or the argp->len field was zero; or these
fields were otherwise invalid.
EINVAL There as an incompatible mapping in the specified address range.
EINVAL There was no mapping in the specified address range.
STANDARDS
Linux.
HISTORY
Linux 4.3.
EXAMPLES
See userfaultfd(2).
SEE ALSO
ioctl(2), ioctl_userfaultfd(2), UFFDIO_REGISTER(2const), userfaultfd(2)
linux.git/Documentation/admin-guide/mm/userfaultfd.rst
Linux man-pages 6.9.1 2024-06-14 UFFDIO_UNREGISTER(2const)
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