btrfs: define SUPER_FLAG_METADUMP_V2

btrfs-progs uses super flag bit BTRFS_SUPER_FLAG_METADUMP_V2 (1ULL << 34).
So just define that in kernel so that we know its been used.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 73ab441..1916016 100644 (file)
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -61,7 +61,8 @@
                                 BTRFS_HEADER_FLAG_RELOC |\
                                 BTRFS_SUPER_FLAG_ERROR |\
                                 BTRFS_SUPER_FLAG_SEEDING |\
-                                BTRFS_SUPER_FLAG_METADUMP)
+                                BTRFS_SUPER_FLAG_METADUMP |\
+                                BTRFS_SUPER_FLAG_METADUMP_V2)
 
 static const struct extent_io_ops btree_extent_io_ops;
 static void end_workqueue_fn(struct btrfs_work *work);

diff --git a/include/uapi/linux/btrfs_tree.h b/include/uapi/linux/btrfs_tree.h
index 6d6e5da..38ab0e0 100644 (file)
--- a/include/uapi/linux/btrfs_tree.h
+++ b/include/uapi/linux/btrfs_tree.h
@@ -456,6 +456,7 @@ struct btrfs_free_space_header {
 
 #define BTRFS_SUPER_FLAG_SEEDING       (1ULL << 32)
 #define BTRFS_SUPER_FLAG_METADUMP      (1ULL << 33)
+#define BTRFS_SUPER_FLAG_METADUMP_V2   (1ULL << 34)
 
 
 /*