Skip site navigation (1)Skip section navigation (2)

FreeBSD Man Pages

Man Page or Keyword Search:
Man Architecture
Apropos Keyword Search (all sections) Output format
home | help
VM_MAP_SUBMAP(9)       FreeBSD Kernel Developer's Manual      VM_MAP_SUBMAP(9)

NAME
     vm_map_submap -- create a subordinate map

SYNOPSIS
     #include <sys/param.h>
     #include <vm/vm.h>
     #include <vm/vm_map.h>

     int
     vm_map_submap(vm_map_t map, vm_offset_t start, vm_offset_t	end,
	 vm_map_t submap);

DESCRIPTION
     The vm_map_submap() function marks	the range bounded by start and end
     within the	map map	as being handled by a subordinate map sub_map.

     It	is generally called by the kernel memory allocator.

IMPLEMENTATION NOTES
     This function is for internal use only.

     Both maps must exist.  The	range must have	been created with
     vm_map_find(9) previously.

     No	other operations may have been performed on this range before calling
     this function.  Only the vm_fault() operation may be performed within
     this range	after calling this function.

     To	remove a submapping, one must first remove the range from the parent
     map, and then destroy the sub_map.	 This procedure	is not recommended.

RETURN VALUES
     The vm_map_submap() function returns KERN_SUCCESS if successful.

     Otherwise,	it returns KERN_INVALID_ARGUMENT if the	caller requested copy-
     on-write flags, or	if the range specified for the sub-map was out of
     range for the parent map, or if a NULL backing object was specified.

SEE ALSO
     vm_map(9),	vm_map_find(9)

AUTHORS
     This manual page was written by Bruce M Simpson <bms@spc.org>.

FreeBSD	10.1			 July 19, 2003			  FreeBSD 10.1

NAME | SYNOPSIS | DESCRIPTION | IMPLEMENTATION NOTES | RETURN VALUES | SEE ALSO | AUTHORS

Want to link to this manual page? Use this URL:
<http://www.freebsd.org/cgi/man.cgi?query=vm_map_submap&sektion=9&manpath=FreeBSD+9.3-RELEASE>

home | help