1059 	struct extent_map *em;  in contains_pending_extent()  local
1065 	list_for_each_entry(em, search_list, list) {  in contains_pending_extent()
1069 		map = (struct map_lookup *)em->bdev;  in contains_pending_extent()
1074 			    map->stripes[i].physical + em->orig_block_len <=  in contains_pending_extent()
1078 				em->orig_block_len;  in contains_pending_extent()
1375 	struct extent_map *em;  in find_next_chunk()  local
1383 		em = rb_entry(n, struct extent_map, rb_node);  in find_next_chunk()
1384 		ret = em->start + em->len;  in find_next_chunk()
2585 	struct extent_map *em;  in btrfs_remove_chunk()  local
2597 	em = lookup_extent_mapping(em_tree, chunk_offset, 1);  in btrfs_remove_chunk()
2600 	if (!em || em->start > chunk_offset ||  in btrfs_remove_chunk()
2601 	    em->start + em->len < chunk_offset) {  in btrfs_remove_chunk()
2608 		if (em)  in btrfs_remove_chunk()
2609 			free_extent_map(em);  in btrfs_remove_chunk()
2612 	map = (struct map_lookup *)em->bdev;  in btrfs_remove_chunk()
2649 	trace_btrfs_chunk_free(root, map, chunk_offset, em->len);  in btrfs_remove_chunk()
2659 	ret = btrfs_remove_block_group(trans, extent_root, chunk_offset, em);  in btrfs_remove_chunk()
2667 	free_extent_map(em);  in btrfs_remove_chunk()
4226 	struct extent_map *em;  in __btrfs_alloc_chunk()  local
4448 	em = alloc_extent_map();  in __btrfs_alloc_chunk()
4449 	if (!em) {  in __btrfs_alloc_chunk()
4454 	set_bit(EXTENT_FLAG_FS_MAPPING, &em->flags);  in __btrfs_alloc_chunk()
4455 	em->bdev = (struct block_device *)map;  in __btrfs_alloc_chunk()
4456 	em->start = start;  in __btrfs_alloc_chunk()
4457 	em->len = num_bytes;  in __btrfs_alloc_chunk()
4458 	em->block_start = 0;  in __btrfs_alloc_chunk()
4459 	em->block_len = em->len;  in __btrfs_alloc_chunk()
4460 	em->orig_block_len = stripe_size;  in __btrfs_alloc_chunk()
4464 	ret = add_extent_mapping(em_tree, em, 0);  in __btrfs_alloc_chunk()
4466 		list_add_tail(&em->list, &trans->transaction->pending_chunks);  in __btrfs_alloc_chunk()
4467 		atomic_inc(&em->refs);  in __btrfs_alloc_chunk()
4471 		free_extent_map(em);  in __btrfs_alloc_chunk()
4491 	free_extent_map(em);  in __btrfs_alloc_chunk()
4499 	remove_extent_mapping(em_tree, em);  in __btrfs_alloc_chunk()
4503 	free_extent_map(em);  in __btrfs_alloc_chunk()
4505 	free_extent_map(em);  in __btrfs_alloc_chunk()
4507 	free_extent_map(em);  in __btrfs_alloc_chunk()
4523 	struct extent_map *em;  in btrfs_finish_chunk_alloc()  local
4533 	em = lookup_extent_mapping(em_tree, chunk_offset, chunk_size);  in btrfs_finish_chunk_alloc()
4536 	if (!em) {  in btrfs_finish_chunk_alloc()
4542 	if (em->start != chunk_offset || em->len != chunk_size) {  in btrfs_finish_chunk_alloc()
4545 			  chunk_size, em->start, em->len);  in btrfs_finish_chunk_alloc()
4546 		free_extent_map(em);  in btrfs_finish_chunk_alloc()
4550 	map = (struct map_lookup *)em->bdev;  in btrfs_finish_chunk_alloc()
4552 	stripe_size = em->orig_block_len;  in btrfs_finish_chunk_alloc()
4613 	free_extent_map(em);  in btrfs_finish_chunk_alloc()
4679 	struct extent_map *em;  in btrfs_chunk_readonly()  local
4687 	em = lookup_extent_mapping(&map_tree->map_tree, chunk_offset, 1);  in btrfs_chunk_readonly()
4689 	if (!em)  in btrfs_chunk_readonly()
4692 	map = (struct map_lookup *)em->bdev;  in btrfs_chunk_readonly()
4713 	free_extent_map(em);  in btrfs_chunk_readonly()
4724 	struct extent_map *em;  in btrfs_mapping_tree_free()  local
4728 		em = lookup_extent_mapping(&tree->map_tree, 0, (u64)-1);  in btrfs_mapping_tree_free()
4729 		if (em)  in btrfs_mapping_tree_free()
4730 			remove_extent_mapping(&tree->map_tree, em);  in btrfs_mapping_tree_free()
4732 		if (!em)  in btrfs_mapping_tree_free()
4735 		free_extent_map(em);  in btrfs_mapping_tree_free()
4737 		free_extent_map(em);  in btrfs_mapping_tree_free()
4744 	struct extent_map *em;  in btrfs_num_copies()  local
4750 	em = lookup_extent_mapping(em_tree, logical, len);  in btrfs_num_copies()
4758 	if (!em) {  in btrfs_num_copies()
4764 	if (em->start > logical || em->start + em->len < logical) {  in btrfs_num_copies()
4766 			    "%Lu-%Lu", logical, logical+len, em->start,  in btrfs_num_copies()
4767 			    em->start + em->len);  in btrfs_num_copies()
4768 		free_extent_map(em);  in btrfs_num_copies()
4772 	map = (struct map_lookup *)em->bdev;  in btrfs_num_copies()
4783 	free_extent_map(em);  in btrfs_num_copies()
4797 	struct extent_map *em;  in btrfs_full_stripe_len()  local
4803 	em = lookup_extent_mapping(em_tree, logical, len);  in btrfs_full_stripe_len()
4805 	BUG_ON(!em);  in btrfs_full_stripe_len()
4807 	BUG_ON(em->start > logical || em->start + em->len < logical);  in btrfs_full_stripe_len()
4808 	map = (struct map_lookup *)em->bdev;  in btrfs_full_stripe_len()
4811 	free_extent_map(em);  in btrfs_full_stripe_len()
4818 	struct extent_map *em;  in btrfs_is_parity_mirror()  local
4824 	em = lookup_extent_mapping(em_tree, logical, len);  in btrfs_is_parity_mirror()
4826 	BUG_ON(!em);  in btrfs_is_parity_mirror()
4828 	BUG_ON(em->start > logical || em->start + em->len < logical);  in btrfs_is_parity_mirror()
4829 	map = (struct map_lookup *)em->bdev;  in btrfs_is_parity_mirror()
4832 	free_extent_map(em);  in btrfs_is_parity_mirror()
4947 	struct extent_map *em;  in __btrfs_map_block()  local
4973 	em = lookup_extent_mapping(em_tree, logical, *length);  in __btrfs_map_block()
4976 	if (!em) {  in __btrfs_map_block()
4982 	if (em->start > logical || em->start + em->len < logical) {  in __btrfs_map_block()
4984 			   "found %Lu-%Lu", logical, em->start,  in __btrfs_map_block()
4985 			   em->start + em->len);  in __btrfs_map_block()
4986 		free_extent_map(em);  in __btrfs_map_block()
4990 	map = (struct map_lookup *)em->bdev;  in __btrfs_map_block()
4991 	offset = logical - em->start;  in __btrfs_map_block()
5026 		*length = min_t(u64, em->len - offset, *length);  in __btrfs_map_block()
5040 		*length = min_t(u64, em->len - offset, max_len);  in __btrfs_map_block()
5042 		*length = em->len - offset;  in __btrfs_map_block()
5281 				em->start + (tmp + i) * map->stripe_len;  in __btrfs_map_block()
5480 	free_extent_map(em);  in __btrfs_map_block()
5507 	struct extent_map *em;  in btrfs_rmap_block()  local
5517 	em = lookup_extent_mapping(em_tree, chunk_start, 1);  in btrfs_rmap_block()
5520 	if (!em) {  in btrfs_rmap_block()
5526 	if (em->start != chunk_start) {  in btrfs_rmap_block()
5528 		       em->start, chunk_start);  in btrfs_rmap_block()
5529 		free_extent_map(em);  in btrfs_rmap_block()
5532 	map = (struct map_lookup *)em->bdev;  in btrfs_rmap_block()
5534 	length = em->len;  in btrfs_rmap_block()
5584 	free_extent_map(em);  in btrfs_rmap_block()
6012 	struct extent_map *em;  in read_one_chunk()  local
6025 	em = lookup_extent_mapping(&map_tree->map_tree, logical, 1);  in read_one_chunk()
6029 	if (em && em->start <= logical && em->start + em->len > logical) {  in read_one_chunk()
6030 		free_extent_map(em);  in read_one_chunk()
6032 	} else if (em) {  in read_one_chunk()
6033 		free_extent_map(em);  in read_one_chunk()
6036 	em = alloc_extent_map();  in read_one_chunk()
6037 	if (!em)  in read_one_chunk()
6042 		free_extent_map(em);  in read_one_chunk()
6046 	set_bit(EXTENT_FLAG_FS_MAPPING, &em->flags);  in read_one_chunk()
6047 	em->bdev = (struct block_device *)map;  in read_one_chunk()
6048 	em->start = logical;  in read_one_chunk()
6049 	em->len = length;  in read_one_chunk()
6050 	em->orig_start = 0;  in read_one_chunk()
6051 	em->block_start = 0;  in read_one_chunk()
6052 	em->block_len = em->len;  in read_one_chunk()
6071 			free_extent_map(em);  in read_one_chunk()
6079 				free_extent_map(em);  in read_one_chunk()
6087 	ret = add_extent_mapping(&map_tree->map_tree, em, 0);  in read_one_chunk()
6090 	free_extent_map(em);  in read_one_chunk()
6720 	struct extent_map *em;  in btrfs_update_commit_device_bytes_used()  local
6730 	list_for_each_entry(em, &transaction->pending_chunks, list) {  in btrfs_update_commit_device_bytes_used()
6731 		map = (struct map_lookup *)em->bdev;  in btrfs_update_commit_device_bytes_used()