857 			     u64 group_start, struct extent_map *em)  in btrfs_remove_block_group()  argument
1088 		remove_extent_mapping(em_tree, em);  in btrfs_remove_block_group()
1091 		free_extent_map(em);  in btrfs_remove_block_group()
1107 	struct extent_map *em;  in btrfs_start_trans_remove_block_group()  local
1112 	em = lookup_extent_mapping(em_tree, chunk_offset, 1);  in btrfs_start_trans_remove_block_group()
1114 	ASSERT(em && em->start == chunk_offset);  in btrfs_start_trans_remove_block_group()
1135 	map = em->map_lookup;  in btrfs_start_trans_remove_block_group()
1137 	free_extent_map(em);  in btrfs_start_trans_remove_block_group()
1636 	struct extent_map *em;  in read_bg_from_eb()  local
1648 	em = lookup_extent_mapping(em_tree, key->objectid, key->offset);  in read_bg_from_eb()
1650 	if (!em) {  in read_bg_from_eb()
1657 	if (em->start != key->objectid || em->len != key->offset) {  in read_bg_from_eb()
1660 			key->objectid, key->offset, em->start, em->len);  in read_bg_from_eb()
1670 	if (flags != (em->map_lookup->type & BTRFS_BLOCK_GROUP_TYPE_MASK)) {  in read_bg_from_eb()
1674 			  (BTRFS_BLOCK_GROUP_TYPE_MASK & em->map_lookup->type));  in read_bg_from_eb()
1679 	free_extent_map(em);  in read_bg_from_eb()
1756 	struct extent_map *em;  in btrfs_rmap_block()  local
1765 	em = btrfs_get_chunk_map(fs_info, chunk_start, 1);  in btrfs_rmap_block()
1766 	if (IS_ERR(em))  in btrfs_rmap_block()
1769 	map = em->map_lookup;  in btrfs_rmap_block()
1770 	data_stripe_length = em->orig_block_len;  in btrfs_rmap_block()
1772 	chunk_start = em->start;  in btrfs_rmap_block()
1830 	free_extent_map(em);  in btrfs_rmap_block()
1944 	struct extent_map *em;  in check_chunk_block_group_mappings()  local
1956 		em = lookup_extent_mapping(map_tree, start, 1);  in check_chunk_block_group_mappings()
1958 		if (!em)  in check_chunk_block_group_mappings()
1961 		bg = btrfs_lookup_block_group(fs_info, em->start);  in check_chunk_block_group_mappings()
1965 				     em->start, em->len);  in check_chunk_block_group_mappings()
1967 			free_extent_map(em);  in check_chunk_block_group_mappings()
1970 		if (bg->start != em->start || bg->length != em->len ||  in check_chunk_block_group_mappings()
1972 		    (em->map_lookup->type & BTRFS_BLOCK_GROUP_TYPE_MASK)) {  in check_chunk_block_group_mappings()
1975 				em->start, em->len,  in check_chunk_block_group_mappings()
1976 				em->map_lookup->type & BTRFS_BLOCK_GROUP_TYPE_MASK,  in check_chunk_block_group_mappings()
1980 			free_extent_map(em);  in check_chunk_block_group_mappings()
1984 		start = em->start + em->len;  in check_chunk_block_group_mappings()
1985 		free_extent_map(em);  in check_chunk_block_group_mappings()
2119 		struct extent_map *em;  in fill_dummy_bgs()  local
2123 		em = rb_entry(node, struct extent_map, rb_node);  in fill_dummy_bgs()
2124 		map = em->map_lookup;  in fill_dummy_bgs()
2125 		bg = btrfs_create_block_group_cache(fs_info, em->start);  in fill_dummy_bgs()
2132 		bg->length = em->len;  in fill_dummy_bgs()
2136 		bg->used = em->len;  in fill_dummy_bgs()
2155 		btrfs_update_space_info(fs_info, bg->flags, em->len, em->len,  in fill_dummy_bgs()
2356 	struct extent_map *em;  in insert_dev_extents()  local
2363 	em = btrfs_get_chunk_map(fs_info, chunk_offset, chunk_size);  in insert_dev_extents()
2364 	if (IS_ERR(em))  in insert_dev_extents()
2365 		return PTR_ERR(em);  in insert_dev_extents()
2367 	map = em->map_lookup;  in insert_dev_extents()
2368 	stripe_size = em->orig_block_len;  in insert_dev_extents()
2391 	free_extent_map(em);  in insert_dev_extents()
4010 	struct extent_map *em;  in btrfs_unfreeze_block_group()  local
4021 		em = lookup_extent_mapping(em_tree, block_group->start,  in btrfs_unfreeze_block_group()
4023 		BUG_ON(!em); /* logic error, can't happen */  in btrfs_unfreeze_block_group()
4024 		remove_extent_mapping(em_tree, em);  in btrfs_unfreeze_block_group()
4028 		free_extent_map(em);  in btrfs_unfreeze_block_group()
4029 		free_extent_map(em);  in btrfs_unfreeze_block_group()