90 				       u64 len, u64 orig_start, u64 block_start,
1029 		if (em->block_start >= EXTENT_MAP_LAST_BYTE) {  in get_extent_allocation_hint()
1032 			if (em && em->block_start < EXTENT_MAP_LAST_BYTE)  in get_extent_allocation_hint()
1033 				alloc_hint = em->block_start;  in get_extent_allocation_hint()
1037 			alloc_hint = em->block_start;  in get_extent_allocation_hint()
2335 	ASSERT(em->block_start < EXTENT_MAP_LAST_BYTE);  in split_zoned_em()
2347 	split_pre->block_start = em->block_start;  in split_zoned_em()
2368 		split_mid->block_start = em->block_start + pre;  in split_zoned_em()
2382 		split_post->block_start = em->block_start + em->len - post;  in split_zoned_em()
2596 		if (em->block_start != EXTENT_MAP_HOLE)  in btrfs_find_new_delalloc_bytes()
5018 	u64 block_start;  in btrfs_truncate_block()  local
5025 	block_start = round_down(from, blocksize);  in btrfs_truncate_block()
5026 	block_end = block_start + blocksize - 1;  in btrfs_truncate_block()
5028 	ret = btrfs_check_data_free_space(inode, &data_reserved, block_start,  in btrfs_truncate_block()
5031 		if (btrfs_check_nocow_lock(inode, block_start, &write_bytes) > 0) {  in btrfs_truncate_block()
5042 						       block_start, blocksize);  in btrfs_truncate_block()
5048 		btrfs_delalloc_release_space(inode, data_reserved, block_start,  in btrfs_truncate_block()
5073 	lock_extent_bits(io_tree, block_start, block_end, &cached_state);  in btrfs_truncate_block()
5075 	ordered = btrfs_lookup_ordered_extent(inode, block_start);  in btrfs_truncate_block()
5077 		unlock_extent_cached(io_tree, block_start, block_end,  in btrfs_truncate_block()
5086 	clear_extent_bit(&inode->io_tree, block_start, block_end,  in btrfs_truncate_block()
5090 	ret = btrfs_set_extent_delalloc(inode, block_start, block_end, 0,  in btrfs_truncate_block()
5093 		unlock_extent_cached(io_tree, block_start, block_end,  in btrfs_truncate_block()
5102 			memzero_page(page, (block_start - page_offset(page)),  in btrfs_truncate_block()
5105 			memzero_page(page, (block_start - page_offset(page)) + offset,  in btrfs_truncate_block()
5110 	btrfs_page_set_dirty(fs_info, page, block_start, block_end + 1 - block_start);  in btrfs_truncate_block()
5111 	unlock_extent_cached(io_tree, block_start, block_end, &cached_state);  in btrfs_truncate_block()
5114 		set_extent_bit(&inode->io_tree, block_start, block_end,  in btrfs_truncate_block()
5123 					block_start, blocksize, true);  in btrfs_truncate_block()
5257 			hole_em->block_start = EXTENT_MAP_HOLE;  in btrfs_cont_expand()
7058 		else if (em->block_start == EXTENT_MAP_INLINE && page)  in btrfs_get_extent()
7163 		em->block_start = EXTENT_MAP_HOLE;  in btrfs_get_extent()
7220 	em->block_start = EXTENT_MAP_HOLE;  in btrfs_get_extent()
7267 	if (em->block_start != EXTENT_MAP_HOLE &&  in btrfs_get_extent_fiemap()
7346 			em->block_start = hole_em->block_start;  in btrfs_get_extent_fiemap()
7358 			em->block_start = EXTENT_MAP_DELALLOC;  in btrfs_get_extent_fiemap()
7378 						  const u64 block_start,  in btrfs_create_dio_extent()  argument
7388 		em = create_io_em(inode, start, len, orig_start, block_start,  in btrfs_create_dio_extent()
7395 	ret = btrfs_add_ordered_extent_dio(inode, start, block_start, len,  in btrfs_create_dio_extent()
7697 				       u64 len, u64 orig_start, u64 block_start,  in create_io_em()  argument
7720 	em->block_start = block_start;  in create_io_em()
7774 	     em->block_start != EXTENT_MAP_HOLE)) {  in btrfs_get_blocks_direct_write()
7776 		u64 block_start, orig_start, orig_block_len, ram_bytes;  in btrfs_get_blocks_direct_write()  local
7783 		block_start = em->block_start + (start - em->start);  in btrfs_get_blocks_direct_write()
7787 		    btrfs_inc_nocow_writers(fs_info, block_start)) {  in btrfs_get_blocks_direct_write()
7791 						      orig_start, block_start,  in btrfs_get_blocks_direct_write()
7794 			btrfs_dec_nocow_writers(fs_info, block_start);  in btrfs_get_blocks_direct_write()
7920 	    em->block_start == EXTENT_MAP_INLINE) {  in btrfs_dio_iomap_begin()
7956 	if ((em->block_start == EXTENT_MAP_HOLE) ||  in btrfs_dio_iomap_begin()
7961 		iomap->addr = em->block_start + (start - em->start);  in btrfs_dio_iomap_begin()
7968 	if (write && btrfs_use_zone_append(BTRFS_I(inode), em->block_start))  in btrfs_dio_iomap_begin()
10316 		em->block_start = ins.objectid;  in __btrfs_prealloc_file_range()
10572 	u64 block_start;  member
10587 	first_ppage = ALIGN(bsi->block_start, PAGE_SIZE) >> PAGE_SHIFT;  in btrfs_add_swap_extent()
10588 	next_ppage = ALIGN_DOWN(bsi->block_start + bsi->block_len,  in btrfs_add_swap_extent()
10712 		if (em->block_start == EXTENT_MAP_HOLE) {  in btrfs_swap_activate()
10717 		if (em->block_start == EXTENT_MAP_INLINE) {  in btrfs_swap_activate()
10735 		logical_block_start = em->block_start + (start - em->start);  in btrfs_swap_activate()
10813 		    bsi.block_start + bsi.block_len == physical_block_start) {  in btrfs_swap_activate()
10822 			bsi.block_start = physical_block_start;  in btrfs_swap_activate()