NAME

     munlockall - reenable paging for calling process

SYNOPSIS

     #include <sys/mman.h>

     int munlockall(void);

DESCRIPTION

     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 avail-
     able, _POSIX_MEMLOCK is defined in <unistd.h> .

RETURN VALUE

     On success,  munlockall  returns  zero.   On  error,  -1  is
     returned and errno is set appropriately.

CONFORMING TO

     POSIX.1b, SVr4

SEE ALSO

     mlockall(2), mlock(2), and munlock(2).