1.\" Copyright (c) 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" %sccs.include.redist.roff% 5.\" 6.\" @(#)munmap.2 8.1 (Berkeley) 06/09/93 7.\" 8.Dd 9.Dt MUNMAP 2 10.Os 11.Sh NAME 12.Nm munmap 13.Nd remove a mapping 14.Sh SYNOPSIS 15.Fn munmap "caddr_t addr" "size_t len" 16.Sh DESCRIPTION 17The 18.Fn munmap 19system call 20deletes the mappings for the specified address range, 21and causes further references to addresses within the range 22to generate invalid memory references. 23.Sh SEE ALSO 24.Xr msync 2 , 25.Xr madvise 2 , 26.Xr mprotect 2 , 27.Xr mincore 2 28.Sh HISTORY 29The 30.Fn munmap 31function first appeared in 4.4BSD. 32