Btrfs: start of block group code

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 956727f015a5..1c27eb645510 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -529,6 +529,7 @@ struct btrfs_root *open_ctree(struct super_block *sb)
         init_bit_radix(&fs_info->pending_del_radix);
         INIT_RADIX_TREE(&fs_info->fs_roots_radix, GFP_NOFS);
         INIT_RADIX_TREE(&fs_info->dev_radix, GFP_NOFS);
+        INIT_RADIX_TREE(&fs_info->block_group_radix, GFP_KERNEL);
         INIT_LIST_HEAD(&fs_info->trans_list);
         sb_set_blocksize(sb, 4096);
         fs_info->running_transaction = NULL;
@@ -613,6 +614,8 @@ struct btrfs_root *open_ctree(struct super_block *sb)
                                   BTRFS_EXTENT_TREE_OBJECTID, extent_root);
         BUG_ON(ret);
 
+        btrfs_read_block_groups(extent_root);
+
         fs_info->generation = btrfs_super_generation(disk_super) + 1;
         memset(&fs_info->kobj, 0, sizeof(fs_info->kobj));
         kobj_set_kset_s(fs_info, btrfs_subsys);
@@ -741,6 +744,7 @@ int close_ctree(struct btrfs_root *root)
         iput(fs_info->btree_inode);
 
         free_dev_radix(fs_info);
+        btrfs_free_block_groups(root->fs_info);
         del_fs_roots(fs_info);
         kfree(fs_info->extent_root);
         kfree(fs_info->tree_root);