MUNLOCKALL Section: Linux Programmer's Manual (2) Updated: 2025-11-26 Index   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 available, _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 and   Index NAME SYNOPSIS DESCRIPTION RETURN VALUE CONFORMING TO SEE ALSO This document was created by using the manual pages. Time: 11:56:06 GMT, March 24, 2025