mm/memory.c: add apply_to_existing_page_range() helper

[linux-block.git] / include / linux / mm.h

diff --git a/include/linux/mm.h b/include/linux/mm.h
index c97ea3b694e65b5b6b48d861d9b98ad388fae6f4..80a9162b406c26c702f15e264e0bd3083cd4636d 100644 (file)
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2621,6 +2621,9 @@ static inline int vm_fault_to_errno(vm_fault_t vm_fault, int foll_flags)
 typedef int (*pte_fn_t)(pte_t *pte, unsigned long addr, void *data);
 extern int apply_to_page_range(struct mm_struct *mm, unsigned long address,
                               unsigned long size, pte_fn_t fn, void *data);
+extern int apply_to_existing_page_range(struct mm_struct *mm,
+                                  unsigned long address, unsigned long size,
+                                  pte_fn_t fn, void *data);
 
 #ifdef CONFIG_PAGE_POISONING
 extern bool page_poisoning_enabled(void);