remap_vmalloc_range_partial — map vmalloc pages to userspace
int remap_vmalloc_range_partial ( | struct vm_area_struct * vma, |
unsigned long uaddr, | |
void * kaddr, | |
unsigned long size) ; |
struct vm_area_struct * vma
vma to cover
unsigned long uaddr
target user address to start at
void * kaddr
virtual address of vmalloc kernel memory
unsigned long size
size of map area
0 for success, -Exxx on failure
This function checks that kaddr
is a valid vmalloc'ed area,
and that it is big enough to cover the range starting at
uaddr
in vma
. Will return failure if that criteria isn't
met.
Similar to remap_pfn_range
(see mm/memory.c)