1 files changed, 3 insertions, 0 deletions

diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h
index 687e291d73f2..3064feef1430 100644
--- a/fs/ocfs2/ocfs2.h
+++ b/fs/ocfs2/ocfs2.h
@@ -263,6 +263,9 @@ enum ocfs2_mount_options
                                                    control lists */
         OCFS2_MOUNT_USRQUOTA = 1 << 10, /* We support user quotas */
         OCFS2_MOUNT_GRPQUOTA = 1 << 11, /* We support group quotas */
+
+        OCFS2_MOUNT_COHERENCY_BUFFERED = 1 << 12 /* Allow concurrent O_DIRECT
+                                                    writes */
 };
 
 #define OCFS2_OSB_SOFT_RO                       0x0001