diff options
Diffstat (limited to 'fs/btrfs/disk-io.c')
| -rw-r--r-- | fs/btrfs/disk-io.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 0a5350573f6..8d7866b733d 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -877,6 +877,12 @@ static int __setup_root(u32 nodesize, u32 leafsize, u32 sectorsize, root->defrag_running = 0; root->defrag_level = 0; root->root_key.objectid = objectid; + root->anon_super.s_root = NULL; + root->anon_super.s_dev = 0; + INIT_LIST_HEAD(&root->anon_super.s_list); + INIT_LIST_HEAD(&root->anon_super.s_instances); + init_rwsem(&root->anon_super.s_umount); + return 0; } @@ -1083,6 +1089,9 @@ struct btrfs_root *btrfs_read_fs_root_no_name(struct btrfs_fs_info *fs_info, root = btrfs_read_fs_root_no_radix(fs_info->tree_root, location); if (IS_ERR(root)) return root; + + set_anon_super(&root->anon_super, NULL); + ret = radix_tree_insert(&fs_info->fs_roots_radix, (unsigned long)root->root_key.objectid, root); @@ -1950,6 +1959,10 @@ int btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root) { radix_tree_delete(&fs_info->fs_roots_radix, (unsigned long)root->root_key.objectid); + if (root->anon_super.s_dev) { + down_write(&root->anon_super.s_umount); + kill_anon_super(&root->anon_super); + } if (root->in_sysfs) btrfs_sysfs_del_root(root); if (root->node) |