diff options
Diffstat (limited to 'arch/x86/mm/pat/memtype.c')
| -rw-r--r-- | arch/x86/mm/pat/memtype.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/arch/x86/mm/pat/memtype.c b/arch/x86/mm/pat/memtype.c index 46a00aa858b6..de10800cd4dd 100644 --- a/arch/x86/mm/pat/memtype.c +++ b/arch/x86/mm/pat/memtype.c @@ -1073,11 +1073,15 @@ void untrack_pfn(struct vm_area_struct *vma, unsigned long pfn, } /* - * untrack_pfn_moved is called, while mremapping a pfnmap for a new region, - * with the old vma after its pfnmap page table has been removed. The new - * vma has a new pfnmap to the same pfn & cache type with VM_PAT set. + * untrack_pfn_clear is called if the following situation fits: + * + * 1) while mremapping a pfnmap for a new region, with the old vma after + * its pfnmap page table has been removed. The new vma has a new pfnmap + * to the same pfn & cache type with VM_PAT set. + * 2) while duplicating vm area, the new vma fails to copy the pgtable from + * old vma. */ -void untrack_pfn_moved(struct vm_area_struct *vma) +void untrack_pfn_clear(struct vm_area_struct *vma) { vm_flags_clear(vma, VM_PAT); } |