1 files changed, 8 insertions, 2 deletions

diff --git a/mm/truncate.c b/mm/truncate.c
index 6479ed2afc53..2330223841fb 100644
--- a/mm/truncate.c
+++ b/mm/truncate.c
@@ -530,9 +530,15 @@ unsigned long invalidate_mapping_pages(struct address_space *mapping,
                         } else if (PageTransHuge(page)) {
                                 index += HPAGE_PMD_NR - 1;
                                 i += HPAGE_PMD_NR - 1;
-                                /* 'end' is in the middle of THP */
-                                if (index ==  round_down(end, HPAGE_PMD_NR))
+                                /*
+                                 * 'end' is in the middle of THP. Don't
+                                 * invalidate the page as the part outside of
+                                 * 'end' could be still useful.
+                                 */
+                                if (index > end) {
+                                        unlock_page(page);
                                         continue;
+                                }
                         }
 
                         ret = invalidate_inode_page(page);