@@ -493,7 +493,15 @@ int walk_page_range(struct mm_struct *mm, unsigned long start,
return 0;
}
-/*
+/**
+ * walk_page_range_novma - walk a range of pagetables not backed by a vma
+ * @mm: mm_struct representing the target process of page table walk
+ * @start: start address of the virtual address range
+ * @end: end address of the virtual address range
+ * @ops: operation to call during the walk
+ * @pgd: pgd to walk if different from mm->pgd
+ * @private: private data for callbacks' usage
+ *
* Similar to walk_page_range() but can walk any page tables even if they are
* not backed by VMAs. Because 'unusual' entries may be walked this function
* will also not lock the PTEs for the pte_entry() callback. This is useful for
Signed-off-by: Rolf Eike Beer <eb@emlix.com> --- mm/pagewalk.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-)