Btrfs: Deal with failed writes in mirrored configurations

Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 95aee5a..f94794a 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -315,8 +315,8 @@
 	block_group_cache = &info->block_group_cache;
 	total_fs_bytes = btrfs_super_total_bytes(&root->fs_info->super_copy);
 
-	if (!owner)
-		factor = 10;
+	if (data & BTRFS_BLOCK_GROUP_METADATA)
+		factor = 9;
 
 	bit = block_group_state_bits(data);