1174 	struct extent_map *em;  in contains_pending_extent()  local
1182 	list_for_each_entry(em, search_list, list) {  in contains_pending_extent()
1186 		map = (struct map_lookup *)em->bdev;  in contains_pending_extent()
1193 			    map->stripes[i].physical + em->orig_block_len <=  in contains_pending_extent()
1208 			end = map->stripes[i].physical + em->orig_block_len;  in contains_pending_extent()
1519 	struct extent_map *em;  in find_next_chunk()  local
1527 		em = rb_entry(n, struct extent_map, rb_node);  in find_next_chunk()
1528 		ret = em->start + em->len;  in find_next_chunk()
2732 	struct extent_map *em;  in btrfs_remove_chunk()  local
2744 	em = lookup_extent_mapping(em_tree, chunk_offset, 1);  in btrfs_remove_chunk()
2747 	if (!em || em->start > chunk_offset ||  in btrfs_remove_chunk()
2748 	    em->start + em->len < chunk_offset) {  in btrfs_remove_chunk()
2755 		if (em)  in btrfs_remove_chunk()
2756 			free_extent_map(em);  in btrfs_remove_chunk()
2759 	map = (struct map_lookup *)em->bdev;  in btrfs_remove_chunk()
2799 	trace_btrfs_chunk_free(root, map, chunk_offset, em->len);  in btrfs_remove_chunk()
2809 	ret = btrfs_remove_block_group(trans, extent_root, chunk_offset, em);  in btrfs_remove_chunk()
2817 	free_extent_map(em);  in btrfs_remove_chunk()
4494 	struct extent_map *em;  in __btrfs_alloc_chunk()  local
4716 	em = alloc_extent_map();  in __btrfs_alloc_chunk()
4717 	if (!em) {  in __btrfs_alloc_chunk()
4722 	set_bit(EXTENT_FLAG_FS_MAPPING, &em->flags);  in __btrfs_alloc_chunk()
4723 	em->bdev = (struct block_device *)map;  in __btrfs_alloc_chunk()
4724 	em->start = start;  in __btrfs_alloc_chunk()
4725 	em->len = num_bytes;  in __btrfs_alloc_chunk()
4726 	em->block_start = 0;  in __btrfs_alloc_chunk()
4727 	em->block_len = em->len;  in __btrfs_alloc_chunk()
4728 	em->orig_block_len = stripe_size;  in __btrfs_alloc_chunk()
4732 	ret = add_extent_mapping(em_tree, em, 0);  in __btrfs_alloc_chunk()
4734 		list_add_tail(&em->list, &trans->transaction->pending_chunks);  in __btrfs_alloc_chunk()
4735 		atomic_inc(&em->refs);  in __btrfs_alloc_chunk()
4739 		free_extent_map(em);  in __btrfs_alloc_chunk()
4759 	free_extent_map(em);  in __btrfs_alloc_chunk()
4767 	remove_extent_mapping(em_tree, em);  in __btrfs_alloc_chunk()
4771 	free_extent_map(em);  in __btrfs_alloc_chunk()
4773 	free_extent_map(em);  in __btrfs_alloc_chunk()
4775 	free_extent_map(em);  in __btrfs_alloc_chunk()
4791 	struct extent_map *em;  in btrfs_finish_chunk_alloc()  local
4801 	em = lookup_extent_mapping(em_tree, chunk_offset, chunk_size);  in btrfs_finish_chunk_alloc()
4804 	if (!em) {  in btrfs_finish_chunk_alloc()
4810 	if (em->start != chunk_offset || em->len != chunk_size) {  in btrfs_finish_chunk_alloc()
4813 			  chunk_size, em->start, em->len);  in btrfs_finish_chunk_alloc()
4814 		free_extent_map(em);  in btrfs_finish_chunk_alloc()
4818 	map = (struct map_lookup *)em->bdev;  in btrfs_finish_chunk_alloc()
4820 	stripe_size = em->orig_block_len;  in btrfs_finish_chunk_alloc()
4881 	free_extent_map(em);  in btrfs_finish_chunk_alloc()
4947 	struct extent_map *em;  in btrfs_chunk_readonly()  local
4955 	em = lookup_extent_mapping(&map_tree->map_tree, chunk_offset, 1);  in btrfs_chunk_readonly()
4957 	if (!em)  in btrfs_chunk_readonly()
4960 	map = (struct map_lookup *)em->bdev;  in btrfs_chunk_readonly()
4981 	free_extent_map(em);  in btrfs_chunk_readonly()
4992 	struct extent_map *em;  in btrfs_mapping_tree_free()  local
4996 		em = lookup_extent_mapping(&tree->map_tree, 0, (u64)-1);  in btrfs_mapping_tree_free()
4997 		if (em)  in btrfs_mapping_tree_free()
4998 			remove_extent_mapping(&tree->map_tree, em);  in btrfs_mapping_tree_free()
5000 		if (!em)  in btrfs_mapping_tree_free()
5003 		free_extent_map(em);  in btrfs_mapping_tree_free()
5005 		free_extent_map(em);  in btrfs_mapping_tree_free()
5012 	struct extent_map *em;  in btrfs_num_copies()  local
5018 	em = lookup_extent_mapping(em_tree, logical, len);  in btrfs_num_copies()
5026 	if (!em) {  in btrfs_num_copies()
5032 	if (em->start > logical || em->start + em->len < logical) {  in btrfs_num_copies()
5034 			    "%Lu-%Lu", logical, logical+len, em->start,  in btrfs_num_copies()
5035 			    em->start + em->len);  in btrfs_num_copies()
5036 		free_extent_map(em);  in btrfs_num_copies()
5040 	map = (struct map_lookup *)em->bdev;  in btrfs_num_copies()
5051 	free_extent_map(em);  in btrfs_num_copies()
5065 	struct extent_map *em;  in btrfs_full_stripe_len()  local
5071 	em = lookup_extent_mapping(em_tree, logical, len);  in btrfs_full_stripe_len()
5073 	BUG_ON(!em);  in btrfs_full_stripe_len()
5075 	BUG_ON(em->start > logical || em->start + em->len < logical);  in btrfs_full_stripe_len()
5076 	map = (struct map_lookup *)em->bdev;  in btrfs_full_stripe_len()
5079 	free_extent_map(em);  in btrfs_full_stripe_len()
5086 	struct extent_map *em;  in btrfs_is_parity_mirror()  local
5092 	em = lookup_extent_mapping(em_tree, logical, len);  in btrfs_is_parity_mirror()
5094 	BUG_ON(!em);  in btrfs_is_parity_mirror()
5096 	BUG_ON(em->start > logical || em->start + em->len < logical);  in btrfs_is_parity_mirror()
5097 	map = (struct map_lookup *)em->bdev;  in btrfs_is_parity_mirror()
5100 	free_extent_map(em);  in btrfs_is_parity_mirror()
5213 	struct extent_map *em;  in __btrfs_map_block()  local
5239 	em = lookup_extent_mapping(em_tree, logical, *length);  in __btrfs_map_block()
5242 	if (!em) {  in __btrfs_map_block()
5248 	if (em->start > logical || em->start + em->len < logical) {  in __btrfs_map_block()
5250 			   "found %Lu-%Lu", logical, em->start,  in __btrfs_map_block()
5251 			   em->start + em->len);  in __btrfs_map_block()
5252 		free_extent_map(em);  in __btrfs_map_block()
5256 	map = (struct map_lookup *)em->bdev;  in __btrfs_map_block()
5257 	offset = logical - em->start;  in __btrfs_map_block()
5292 		*length = min_t(u64, em->len - offset, *length);  in __btrfs_map_block()
5306 		*length = min_t(u64, em->len - offset, max_len);  in __btrfs_map_block()
5308 		*length = em->len - offset;  in __btrfs_map_block()
5547 				em->start + (tmp + i) * map->stripe_len;  in __btrfs_map_block()
5746 	free_extent_map(em);  in __btrfs_map_block()
5773 	struct extent_map *em;  in btrfs_rmap_block()  local
5783 	em = lookup_extent_mapping(em_tree, chunk_start, 1);  in btrfs_rmap_block()
5786 	if (!em) {  in btrfs_rmap_block()
5792 	if (em->start != chunk_start) {  in btrfs_rmap_block()
5794 		       em->start, chunk_start);  in btrfs_rmap_block()
5795 		free_extent_map(em);  in btrfs_rmap_block()
5798 	map = (struct map_lookup *)em->bdev;  in btrfs_rmap_block()
5800 	length = em->len;  in btrfs_rmap_block()
5850 	free_extent_map(em);  in btrfs_rmap_block()
6199 	struct extent_map *em;  in read_one_chunk()  local
6212 	em = lookup_extent_mapping(&map_tree->map_tree, logical, 1);  in read_one_chunk()
6216 	if (em && em->start <= logical && em->start + em->len > logical) {  in read_one_chunk()
6217 		free_extent_map(em);  in read_one_chunk()
6219 	} else if (em) {  in read_one_chunk()
6220 		free_extent_map(em);  in read_one_chunk()
6223 	em = alloc_extent_map();  in read_one_chunk()
6224 	if (!em)  in read_one_chunk()
6229 		free_extent_map(em);  in read_one_chunk()
6233 	set_bit(EXTENT_FLAG_FS_MAPPING, &em->flags);  in read_one_chunk()
6234 	em->bdev = (struct block_device *)map;  in read_one_chunk()
6235 	em->start = logical;  in read_one_chunk()
6236 	em->len = length;  in read_one_chunk()
6237 	em->orig_start = 0;  in read_one_chunk()
6238 	em->block_start = 0;  in read_one_chunk()
6239 	em->block_len = em->len;  in read_one_chunk()
6258 			free_extent_map(em);  in read_one_chunk()
6266 				free_extent_map(em);  in read_one_chunk()
6276 	ret = add_extent_mapping(&map_tree->map_tree, em, 0);  in read_one_chunk()
6279 	free_extent_map(em);  in read_one_chunk()
6922 	struct extent_map *em;  in btrfs_update_commit_device_bytes_used()  local
6932 	list_for_each_entry(em, &transaction->pending_chunks, list) {  in btrfs_update_commit_device_bytes_used()
6933 		map = (struct map_lookup *)em->bdev;  in btrfs_update_commit_device_bytes_used()