UBI: tweak volumes locking

Transform vtbl_mutex to volumes_mutex - this just makes code
easier to understand.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/mtd/ubi/ubi.h b/drivers/mtd/ubi/ubi.h
index 0a3a803dd22f..69cbee3be7a4 100644
--- a/drivers/mtd/ubi/ubi.h
+++ b/drivers/mtd/ubi/ubi.h
@@ -255,7 +255,8 @@ struct ubi_wl_entry;
  * @vtbl_slots: how many slots are available in the volume table
  * @vtbl_size: size of the volume table in bytes
  * @vtbl: in-RAM volume table copy
- * @vtbl_mutex: protects on-flash volume table
+ * @volumes_mutex: protects on-flash volume table and serializes volume
+ *                 changes, like creation, deletion, update, resize
  *
  * @max_ec: current highest erase counter value
  * @mean_ec: current mean erase counter value
@@ -333,7 +334,7 @@ struct ubi_device {
         int vtbl_slots;
         int vtbl_size;
         struct ubi_vtbl_record *vtbl;
-        struct mutex vtbl_mutex;
+        struct mutex volumes_mutex;
 
         int max_ec;
         int mean_ec;