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VM_MAP_FINDSPACE(9)	    Kernel Developer's Manual	     VM_MAP_FINDSPACE(9)

NAME
     vm_map_findspace -- find a free region within a map

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

     int
     vm_map_findspace(vm_map_t map, vm_offset_t start, vm_size_t length,
	 vm_offset_t *addr);

DESCRIPTION
     The  vm_map_findspace()  function attempts to find a region with sufficient
     space in the map for an object of size length at the address addr.

IMPLEMENTATION NOTES
     It is the caller's responsibility	to  obtain  a  lock  on  the  map  using
     vm_map_lock(9) before calling this function.

     This  routine  may  call  pmap_growkernel(9)  to  grow the kernel's address
     space, if and only if the mapping is being made within the  kernel  address
     space, and if insufficient space remains in the kernel_map.

RETURN VALUES
     The  vm_map_findspace()  function	returns  the  value 0 if successful, and
     *addr will contain the first virtual address in the  found  region;  other-
     wise, the value 1 is returned.

SEE ALSO
     pmap_growkernel(9), vm_map(9), vm_map_lock(9)

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

FreeBSD 5.3			  July 19, 2003 	     VM_MAP_FINDSPACE(9)
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