133 				       u64 len, u64 orig_start, u64 block_start,
1228 		if (em->block_start >= EXTENT_MAP_LAST_BYTE) {  in get_extent_allocation_hint()
1231 			if (em && em->block_start < EXTENT_MAP_LAST_BYTE)  in get_extent_allocation_hint()
1232 				alloc_hint = em->block_start;  in get_extent_allocation_hint()
1236 			alloc_hint = em->block_start;  in get_extent_allocation_hint()
2627 		if (em->block_start != EXTENT_MAP_HOLE)  in btrfs_find_new_delalloc_bytes()
4671 	u64 block_start;  in btrfs_truncate_block()  local
4678 	block_start = round_down(from, blocksize);  in btrfs_truncate_block()
4679 	block_end = block_start + blocksize - 1;  in btrfs_truncate_block()
4681 	ret = btrfs_check_data_free_space(inode, &data_reserved, block_start,  in btrfs_truncate_block()
4684 		if (btrfs_check_nocow_lock(inode, block_start, &write_bytes, false) > 0) {  in btrfs_truncate_block()
4695 						       block_start, blocksize);  in btrfs_truncate_block()
4701 		btrfs_delalloc_release_space(inode, data_reserved, block_start,  in btrfs_truncate_block()
4734 	lock_extent(io_tree, block_start, block_end, &cached_state);  in btrfs_truncate_block()
4736 	ordered = btrfs_lookup_ordered_extent(inode, block_start);  in btrfs_truncate_block()
4738 		unlock_extent(io_tree, block_start, block_end, &cached_state);  in btrfs_truncate_block()
4746 	clear_extent_bit(&inode->io_tree, block_start, block_end,  in btrfs_truncate_block()
4750 	ret = btrfs_set_extent_delalloc(inode, block_start, block_end, 0,  in btrfs_truncate_block()
4753 		unlock_extent(io_tree, block_start, block_end, &cached_state);  in btrfs_truncate_block()
4761 			memzero_page(page, (block_start - page_offset(page)),  in btrfs_truncate_block()
4764 			memzero_page(page, (block_start - page_offset(page)) + offset,  in btrfs_truncate_block()
4767 	btrfs_page_clear_checked(fs_info, page, block_start,  in btrfs_truncate_block()
4768 				 block_end + 1 - block_start);  in btrfs_truncate_block()
4769 	btrfs_page_set_dirty(fs_info, page, block_start, block_end + 1 - block_start);  in btrfs_truncate_block()
4770 	unlock_extent(io_tree, block_start, block_end, &cached_state);  in btrfs_truncate_block()
4773 		set_extent_bit(&inode->io_tree, block_start, block_end,  in btrfs_truncate_block()
4782 					block_start, blocksize, true);  in btrfs_truncate_block()
4914 			hole_em->block_start = EXTENT_MAP_HOLE;  in btrfs_cont_expand()
6753 		else if (em->block_start == EXTENT_MAP_INLINE && page)  in btrfs_get_extent()
6858 		em->block_start = EXTENT_MAP_HOLE;  in btrfs_get_extent()
6883 		ASSERT(em->block_start == EXTENT_MAP_INLINE);  in btrfs_get_extent()
6895 	em->block_start = EXTENT_MAP_HOLE;  in btrfs_get_extent()
6927 						  const u64 block_start,  in btrfs_create_dio_extent()  argument
6937 		em = create_io_em(inode, start, len, orig_start, block_start,  in btrfs_create_dio_extent()
6945 					     block_start, block_len, 0,  in btrfs_create_dio_extent()
7221 				       u64 len, u64 orig_start, u64 block_start,  in create_io_em()  argument
7242 	em->block_start = block_start;  in create_io_em()
7275 	u64 block_start, orig_start, orig_block_len, ram_bytes;  in btrfs_get_blocks_direct_write()  local
7294 	     em->block_start != EXTENT_MAP_HOLE)) {  in btrfs_get_blocks_direct_write()
7300 		block_start = em->block_start + (start - em->start);  in btrfs_get_blocks_direct_write()
7304 			bg = btrfs_inc_nocow_writers(fs_info, block_start);  in btrfs_get_blocks_direct_write()
7329 					      orig_start, block_start,  in btrfs_get_blocks_direct_write()
7531 	    em->block_start == EXTENT_MAP_INLINE) {  in btrfs_dio_iomap_begin()
7625 	if ((em->block_start == EXTENT_MAP_HOLE) ||  in btrfs_dio_iomap_begin()
7630 		iomap->addr = em->block_start + (start - em->start);  in btrfs_dio_iomap_begin()
9614 		em->block_start = ins.objectid;  in __btrfs_prealloc_file_range()
10077 	if (em->block_start == EXTENT_MAP_INLINE) {  in btrfs_encoded_read()
10098 	if (em->block_start == EXTENT_MAP_HOLE ||  in btrfs_encoded_read()
10105 		disk_bytenr = em->block_start;  in btrfs_encoded_read()
10124 		disk_bytenr = em->block_start + (start - em->start);  in btrfs_encoded_read()
10484 	u64 block_start;  member
10509 	first_ppage = PAGE_ALIGN(bsi->block_start) >> PAGE_SHIFT;  in btrfs_add_swap_extent()
10510 	next_ppage = PAGE_ALIGN_DOWN(bsi->block_start + bsi->block_len) >> PAGE_SHIFT;  in btrfs_add_swap_extent()
10649 		if (em->block_start == EXTENT_MAP_HOLE) {  in btrfs_swap_activate()
10654 		if (em->block_start == EXTENT_MAP_INLINE) {  in btrfs_swap_activate()
10672 		logical_block_start = em->block_start + (start - em->start);  in btrfs_swap_activate()
10750 		    bsi.block_start + bsi.block_len == physical_block_start) {  in btrfs_swap_activate()
10759 			bsi.block_start = physical_block_start;  in btrfs_swap_activate()