munlockall - reenable paging for calling process
munlockall reenables paging for all pages mapped into the
address space of the calling process.
Memory locks do not stack, i.e., pages which have been
locked several times by calls to mlock or mlockall will be
unlocked by a single call to munlockall. Pages which are
mapped to several locations or by several processes stay
locked into RAM as long as they are locked at least at one
location or by at least one process.
On POSIX systems on which mlockall and munlockall are
available, _POSIX_MEMLOCK is defined in <unistd.h> .
On success, munlockall returns zero. On error, -1 is
returned and errno is set appropriately.
mlockall(2), mlock(2), munlock(2)