123 				       u64 len, u64 orig_start, u64 block_start,
1119 		if (em->block_start >= EXTENT_MAP_LAST_BYTE) {  in get_extent_allocation_hint()
1122 			if (em && em->block_start < EXTENT_MAP_LAST_BYTE)  in get_extent_allocation_hint()
1123 				alloc_hint = em->block_start;  in get_extent_allocation_hint()
1127 			alloc_hint = em->block_start;  in get_extent_allocation_hint()
2564 	ASSERT(em->block_start < EXTENT_MAP_LAST_BYTE);  in split_zoned_em()
2576 	split_pre->block_start = em->block_start;  in split_zoned_em()
2597 		split_mid->block_start = em->block_start + pre;  in split_zoned_em()
2611 		split_post->block_start = em->block_start + em->len - post;  in split_zoned_em()
2810 		if (em->block_start != EXTENT_MAP_HOLE)  in btrfs_find_new_delalloc_bytes()
4877 	u64 block_start;  in btrfs_truncate_block()  local
4884 	block_start = round_down(from, blocksize);  in btrfs_truncate_block()
4885 	block_end = block_start + blocksize - 1;  in btrfs_truncate_block()
4887 	ret = btrfs_check_data_free_space(inode, &data_reserved, block_start,  in btrfs_truncate_block()
4890 		if (btrfs_check_nocow_lock(inode, block_start, &write_bytes, false) > 0) {  in btrfs_truncate_block()
4901 						       block_start, blocksize);  in btrfs_truncate_block()
4907 		btrfs_delalloc_release_space(inode, data_reserved, block_start,  in btrfs_truncate_block()
4932 	lock_extent(io_tree, block_start, block_end, &cached_state);  in btrfs_truncate_block()
4934 	ordered = btrfs_lookup_ordered_extent(inode, block_start);  in btrfs_truncate_block()
4936 		unlock_extent(io_tree, block_start, block_end, &cached_state);  in btrfs_truncate_block()
4944 	clear_extent_bit(&inode->io_tree, block_start, block_end,  in btrfs_truncate_block()
4948 	ret = btrfs_set_extent_delalloc(inode, block_start, block_end, 0,  in btrfs_truncate_block()
4951 		unlock_extent(io_tree, block_start, block_end, &cached_state);  in btrfs_truncate_block()
4959 			memzero_page(page, (block_start - page_offset(page)),  in btrfs_truncate_block()
4962 			memzero_page(page, (block_start - page_offset(page)) + offset,  in btrfs_truncate_block()
4965 	btrfs_page_clear_checked(fs_info, page, block_start,  in btrfs_truncate_block()
4966 				 block_end + 1 - block_start);  in btrfs_truncate_block()
4967 	btrfs_page_set_dirty(fs_info, page, block_start, block_end + 1 - block_start);  in btrfs_truncate_block()
4968 	unlock_extent(io_tree, block_start, block_end, &cached_state);  in btrfs_truncate_block()
4971 		set_extent_bit(&inode->io_tree, block_start, block_end,  in btrfs_truncate_block()
4980 					block_start, blocksize, true);  in btrfs_truncate_block()
5112 			hole_em->block_start = EXTENT_MAP_HOLE;  in btrfs_cont_expand()
6860 		else if (em->block_start == EXTENT_MAP_INLINE && page)  in btrfs_get_extent()
6965 		em->block_start = EXTENT_MAP_HOLE;  in btrfs_get_extent()
7020 	em->block_start = EXTENT_MAP_HOLE;  in btrfs_get_extent()
7051 						  const u64 block_start,  in btrfs_create_dio_extent()  argument
7061 		em = create_io_em(inode, start, len, orig_start, block_start,  in btrfs_create_dio_extent()
7068 	ret = btrfs_add_ordered_extent(inode, start, len, len, block_start,  in btrfs_create_dio_extent()
7340 				       u64 len, u64 orig_start, u64 block_start,  in create_io_em()  argument
7361 	em->block_start = block_start;  in create_io_em()
7394 	u64 block_start, orig_start, orig_block_len, ram_bytes;  in btrfs_get_blocks_direct_write()  local
7412 	     em->block_start != EXTENT_MAP_HOLE)) {  in btrfs_get_blocks_direct_write()
7418 		block_start = em->block_start + (start - em->start);  in btrfs_get_blocks_direct_write()
7422 			bg = btrfs_inc_nocow_writers(fs_info, block_start);  in btrfs_get_blocks_direct_write()
7447 					      orig_start, block_start,  in btrfs_get_blocks_direct_write()
7644 	    em->block_start == EXTENT_MAP_INLINE) {  in btrfs_dio_iomap_begin()
7738 	if ((em->block_start == EXTENT_MAP_HOLE) ||  in btrfs_dio_iomap_begin()
7743 		iomap->addr = em->block_start + (start - em->start);  in btrfs_dio_iomap_begin()
7750 	if (write && btrfs_use_zone_append(BTRFS_I(inode), em->block_start))  in btrfs_dio_iomap_begin()
9946 		em->block_start = ins.objectid;  in __btrfs_prealloc_file_range()
10496 	if (em->block_start == EXTENT_MAP_INLINE) {  in btrfs_encoded_read()
10517 	if (em->block_start == EXTENT_MAP_HOLE ||  in btrfs_encoded_read()
10524 		disk_bytenr = em->block_start;  in btrfs_encoded_read()
10543 		disk_bytenr = em->block_start + (start - em->start);  in btrfs_encoded_read()
10907 	u64 block_start;  member
10932 	first_ppage = ALIGN(bsi->block_start, PAGE_SIZE) >> PAGE_SHIFT;  in btrfs_add_swap_extent()
10933 	next_ppage = ALIGN_DOWN(bsi->block_start + bsi->block_len,  in btrfs_add_swap_extent()
11073 		if (em->block_start == EXTENT_MAP_HOLE) {  in btrfs_swap_activate()
11078 		if (em->block_start == EXTENT_MAP_INLINE) {  in btrfs_swap_activate()
11096 		logical_block_start = em->block_start + (start - em->start);  in btrfs_swap_activate()
11174 		    bsi.block_start + bsi.block_len == physical_block_start) {  in btrfs_swap_activate()
11183 			bsi.block_start = physical_block_start;  in btrfs_swap_activate()