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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¶
vma
memory mapping
address
user virtual address
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 4.9. |