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| FOLLOW_PFN(9) | Memory Management in Linux | FOLLOW_PFN(9) |
NAME¶
follow_pfn - look up PFN at a user virtual address
SYNOPSIS¶
int follow_pfn(struct vm_area_struct * vma, unsigned long address, unsigned long * pfn);
ARGUMENTS¶
struct vm_area_struct * vma
memory mapping
unsigned long address
user virtual address
unsigned long * pfn
location to store found PFN
DESCRIPTION¶
Only IO mappings and raw PFN mappings are allowed.
Returns zero and the pfn at pfn on success, -ve otherwise.
COPYRIGHT¶
| June 2017 | Kernel Hackers Manual 4.11 |