diff --git a/fs/mpage.c b/fs/mpage.c
index db59cbf6affc..d36a95473f77 100644
--- a/fs/mpage.c
+++ b/fs/mpage.c
@@ -641,14 +641,6 @@ static int __mpage_writepage(struct page *page, struct writeback_control *wbc,
  *
  * This is a library function, which implements the writepages()
  * address_space_operation.
- *
- * If a page is already under I/O, generic_writepages() skips it, even
- * if it's dirty.  This is desirable behaviour for memory-cleaning writeback,
- * but it is INCORRECT for data-integrity system calls such as fsync().  fsync()
- * and msync() need to guarantee that all the data which was dirty at the time
- * the call was made get new I/O started against them.  If wbc->sync_mode is
- * WB_SYNC_ALL then we were called for data integrity and we must wait for
- * existing IO to complete.
  */
 int
 mpage_writepages(struct address_space *mapping,