ext4: fix race between writepages and remount

[linux-2.6-microblaze.git] / fs / ext4 / ext4.h

diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 9418359..cd4ccae 100644 (file)
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1676,7 +1676,8 @@ struct ext4_sb_info {
 
        /*
         * Barrier between writepages ops and changing any inode's JOURNAL_DATA
-        * or EXTENTS flag.
+        * or EXTENTS flag or between writepages ops and changing DELALLOC or
+        * DIOREAD_NOLOCK mount options on remount.
         */
        struct percpu_rw_semaphore s_writepages_rwsem;
        struct dax_device *s_daxdev;