1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/mount.h b/include/linux/mount.h
index 7e133ae2a94f..dd4e83eba933 100644
--- a/include/linux/mount.h
+++ b/include/linux/mount.h
@@ -21,6 +21,7 @@
 #define MNT_NODEV       0x02
 #define MNT_NOEXEC      0x04
 #define MNT_SHARED      0x10    /* if the vfsmount is a shared mount */
+#define MNT_UNBINDABLE  0x20    /* if the vfsmount is a unbindable mount */
 #define MNT_PNODE_MASK  0x30    /* propogation flag mask */
 
 struct vfsmount {