int btrfs_test_qgroups(u32 sectorsize, u32 nodesize) { struct btrfs_fs_info *fs_info = NULL; struct btrfs_root *root; struct btrfs_root *tmp_root; int ret = 0; fs_info = btrfs_alloc_dummy_fs_info(); if (!fs_info) { test_msg("Couldn't allocate dummy fs info\n"); return -ENOMEM; } root = btrfs_alloc_dummy_root(fs_info, sectorsize, nodesize); if (IS_ERR(root)) { test_msg("Couldn't allocate root\n"); ret = PTR_ERR(root); goto out; } /* We are using this root as our extent root */ root->fs_info->extent_root = root; /* * Some of the paths we test assume we have a filled out fs_info, so we * just need to add the root in there so we don't panic. */ root->fs_info->tree_root = root; root->fs_info->quota_root = root; set_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags); /* * Can't use bytenr 0, some things freak out * *cough*backref walking code*cough* */ root->node = alloc_test_extent_buffer(root->fs_info, nodesize, nodesize); if (!root->node) { test_msg("Couldn't allocate dummy buffer\n"); ret = -ENOMEM; goto out; } btrfs_set_header_level(root->node, 0); btrfs_set_header_nritems(root->node, 0); root->alloc_bytenr += 2 * nodesize; tmp_root = btrfs_alloc_dummy_root(fs_info, sectorsize, nodesize); if (IS_ERR(tmp_root)) { test_msg("Couldn't allocate a fs root\n"); ret = PTR_ERR(tmp_root); goto out; } tmp_root->root_key.objectid = BTRFS_FS_TREE_OBJECTID; root->fs_info->fs_root = tmp_root; ret = btrfs_insert_fs_root(root->fs_info, tmp_root); if (ret) { test_msg("Couldn't insert fs root %d\n", ret); goto out; } tmp_root = btrfs_alloc_dummy_root(fs_info, sectorsize, nodesize); if (IS_ERR(tmp_root)) { test_msg("Couldn't allocate a fs root\n"); ret = PTR_ERR(tmp_root); goto out; } tmp_root->root_key.objectid = BTRFS_FIRST_FREE_OBJECTID; ret = btrfs_insert_fs_root(root->fs_info, tmp_root); if (ret) { test_msg("Couldn't insert fs root %d\n", ret); goto out; } test_msg("Running qgroup tests\n"); ret = test_no_shared_qgroup(root, sectorsize, nodesize); if (ret) goto out; ret = test_multiple_refs(root, sectorsize, nodesize); out: btrfs_free_dummy_root(root); btrfs_free_dummy_fs_info(fs_info); return ret; }
static int run_test(test_func_t test_func, int bitmaps) { struct btrfs_root *root = NULL; struct btrfs_block_group_cache *cache = NULL; struct btrfs_trans_handle trans; struct btrfs_path *path = NULL; int ret; root = btrfs_alloc_dummy_root(); if (IS_ERR(root)) { test_msg("Couldn't allocate dummy root\n"); ret = PTR_ERR(root); goto out; } root->fs_info = btrfs_alloc_dummy_fs_info(); if (!root->fs_info) { test_msg("Couldn't allocate dummy fs info\n"); ret = -ENOMEM; goto out; } btrfs_set_super_compat_ro_flags(root->fs_info->super_copy, BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE); root->fs_info->free_space_root = root; root->fs_info->tree_root = root; root->node = alloc_test_extent_buffer(root->fs_info, 4096); if (!root->node) { test_msg("Couldn't allocate dummy buffer\n"); ret = -ENOMEM; goto out; } btrfs_set_header_level(root->node, 0); btrfs_set_header_nritems(root->node, 0); root->alloc_bytenr += 8192; cache = btrfs_alloc_dummy_block_group(8 * BITMAP_RANGE); if (!cache) { test_msg("Couldn't allocate dummy block group cache\n"); ret = -ENOMEM; goto out; } cache->bitmap_low_thresh = 0; cache->bitmap_high_thresh = (u32)-1; cache->needs_free_space = 1; btrfs_init_dummy_trans(&trans); path = btrfs_alloc_path(); if (!path) { test_msg("Couldn't allocate path\n"); return -ENOMEM; } ret = add_block_group_free_space(&trans, root->fs_info, cache); if (ret) { test_msg("Could not add block group free space\n"); goto out; } if (bitmaps) { ret = convert_free_space_to_bitmaps(&trans, root->fs_info, cache, path); if (ret) { test_msg("Could not convert block group to bitmaps\n"); goto out; } } ret = test_func(&trans, root->fs_info, cache, path); if (ret) goto out; ret = remove_block_group_free_space(&trans, root->fs_info, cache); if (ret) { test_msg("Could not remove block group free space\n"); goto out; } if (btrfs_header_nritems(root->node) != 0) { test_msg("Free space tree has leftover items\n"); ret = -EINVAL; goto out; } ret = 0; out: btrfs_free_path(path); btrfs_free_dummy_block_group(cache); btrfs_free_dummy_root(root); return ret; }