remove_active_range(9) [suse man page]

REMOVE_ACTIVE_RANGE(9)					    Memory Management in Linux					    REMOVE_ACTIVE_RANGE(9)

NAME

       remove_active_range - Shrink an existing registered range of PFNs

SYNOPSIS

       void remove_active_range(unsigned int nid, unsigned long start_pfn, unsigned long end_pfn);

ARGUMENTS

       nid
	   The node id the range is on that should be shrunk

       start_pfn
	   The new PFN of the range

       end_pfn
	   The new PFN of the range

DESCRIPTION

       i386 with NUMA use alloc_remap to store a node_mem_map on a local node. The map is kept near the end physical page range that has already
       been registered. This function allows an arch to shrink an existing registered range.

COPYRIGHT

Kernel Hackers Manual 2.6.					     July 2010						    REMOVE_ACTIVE_RANGE(9)

VM_MAP_SUBMAP(9)					   BSD 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 recom-
     mended.

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>.

BSD
								   July 19, 2003							       BSD