vm_map_submap — create a subordinate map

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

Debian                                            July 19, 2003                                 VM_MAP_SUBMAP(9)

       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.

       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.

       vm_map_submap — create a subordinate map

       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.

vm_map(9), vm_map_find(9)

#include<sys/param.h>#include<vm/vm.h>#include<vm/vm_map.h>intvm_map_submap(vm_map_tmap, vm_offset_tstart, vm_offset_tend, vm_map_tsubmap);