1 files changed, 2 insertions, 0 deletions

diff --git a/mm/msync.c b/mm/msync.c
index 090f426bca7d..d0f5a1bce7cb 100644
--- a/mm/msync.c
+++ b/mm/msync.c
@@ -34,6 +34,8 @@ static void sync_pte_range(struct vm_area_struct *vma, pmd_t *pmd,
 
                 if (!pte_present(*pte))
                         continue;
+                if (!pte_maybe_dirty(*pte))
+                        continue;
                 pfn = pte_pfn(*pte);
                 if (!pfn_valid(pfn))
                         continue;