Provided by: freebsd-manpages_7.0-2_all
vm_map_findspace - find a free region within a map
vm_map_findspace(vm_map_t map, vm_offset_t start, vm_size_t length,
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.
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.
The vm_map_findspace() function returns the value 0 if successful, and
*addr will contain the first virtual address in the found region;
otherwise, the value 1 is returned.
pmap_growkernel(9), vm_map(9), vm_map_entry_resize_free(9),
This manual page was written by Bruce M Simpson 〈email@example.com〉.