1 files changed, 13 insertions, 2 deletions

diff --git a/drivers/mtd/ubi/kapi.c b/drivers/mtd/ubi/kapi.c
index f3bab669f6bb..589c423fac2d 100644
--- a/drivers/mtd/ubi/kapi.c
+++ b/drivers/mtd/ubi/kapi.c
@@ -137,7 +137,7 @@ struct ubi_volume_desc *ubi_open_volume(int ubi_num, int vol_id, int mode)
                 return ERR_PTR(-EINVAL);
 
         if (mode != UBI_READONLY && mode != UBI_READWRITE &&
-            mode != UBI_EXCLUSIVE)
+            mode != UBI_EXCLUSIVE && mode != UBI_METAONLY)
                 return ERR_PTR(-EINVAL);
 
         /*
@@ -182,10 +182,17 @@ struct ubi_volume_desc *ubi_open_volume(int ubi_num, int vol_id, int mode)
                 break;
 
         case UBI_EXCLUSIVE:
-                if (vol->exclusive || vol->writers || vol->readers)
+                if (vol->exclusive || vol->writers || vol->readers ||
+                    vol->metaonly)
                         goto out_unlock;
                 vol->exclusive = 1;
                 break;
+
+        case UBI_METAONLY:
+                if (vol->metaonly || vol->exclusive)
+                        goto out_unlock;
+                vol->metaonly = 1;
+                break;
         }
         get_device(&vol->dev);
         vol->ref_count += 1;
@@ -343,6 +350,10 @@ void ubi_close_volume(struct ubi_volume_desc *desc)
                 break;
         case UBI_EXCLUSIVE:
                 vol->exclusive = 0;
+                break;
+        case UBI_METAONLY:
+                vol->metaonly = 0;
+                break;
         }
         vol->ref_count -= 1;
         spin_unlock(&ubi->volumes_lock);