UFFDIO_UNREGISTER2const
Unregister a memory address range from userfaultfd
Usage
#include <linux/userfaultfd.h> /* Definition of UFFD* constants */ #include <sys/ioctl.h>
int ioctl(int fd, UFFDIO_UNREGISTER, const struct uffdio_range *argp);
Library
Standard C library (libc, -lc)
Overview
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.
Examples
See userfaultfd(2).
Releases
2 releases since Debian 13 (Trixie); the text changed 1 time.