1 files changed, 2 insertions, 1 deletions

diff --git a/mm/mmap.c b/mm/mmap.c
index c739d6db7193..79bcc9f92e48 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1490,13 +1490,14 @@ SYSCALL_DEFINE1(old_mmap, struct mmap_arg_struct __user *, arg)
 int vma_wants_writenotify(struct vm_area_struct *vma)
 {
         vm_flags_t vm_flags = vma->vm_flags;
+        const struct vm_operations_struct *vm_ops = vma->vm_ops;
 
         /* If it was private or non-writable, the write bit is already clear */
         if ((vm_flags & (VM_WRITE|VM_SHARED)) != ((VM_WRITE|VM_SHARED)))
                 return 0;
 
         /* The backer wishes to know when pages are first written to? */
-        if (vma->vm_ops && vma->vm_ops->page_mkwrite)
+        if (vm_ops && (vm_ops->page_mkwrite || vm_ops->pfn_mkwrite))
                 return 1;
 
         /* The open routine did something to the protections that pgprot_modify