Copyright (c) 2003 Bruce M Simpson <email@example.com> All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documenta...
NAMEvm_map_findspace - find a free region within a map
SYNOPSISIn sys/param.h In vm/vm.h In vm/vm_map.h Ft int Fo vm_map_findspace Fa vm_map_t map vm_offset_t start vm_size_t length vm_offset_t *addr Fc
DESCRIPTIONThe Fn vm_map_findspace function attempts to find a region with sufficient space in the Fa map for an object of size Fa length at the address Fa addr .
IMPLEMENTATION NOTESIt is the caller's responsibility to obtain a lock on the Fa map using vm_map_lock9 before calling this function.
This routine may call pmap_growkernel9 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