89 				       u64 len, u64 orig_start, u64 block_start,
947 		if (em->block_start >= EXTENT_MAP_LAST_BYTE) {  in get_extent_allocation_hint()
950 			if (em && em->block_start < EXTENT_MAP_LAST_BYTE)  in get_extent_allocation_hint()
951 				alloc_hint = em->block_start;  in get_extent_allocation_hint()
955 			alloc_hint = em->block_start;  in get_extent_allocation_hint()
2274 		if (em->block_start != EXTENT_MAP_HOLE)  in btrfs_find_new_delalloc_bytes()
4569 	u64 block_start;  in btrfs_truncate_block()  local
4576 	block_start = round_down(from, blocksize);  in btrfs_truncate_block()
4577 	block_end = block_start + blocksize - 1;  in btrfs_truncate_block()
4580 					  block_start, blocksize);  in btrfs_truncate_block()
4582 		if (btrfs_check_nocow_lock(BTRFS_I(inode), block_start,  in btrfs_truncate_block()
4594 					data_reserved, block_start, blocksize);  in btrfs_truncate_block()
4601 					     block_start, blocksize, true);  in btrfs_truncate_block()
4622 	lock_extent_bits(io_tree, block_start, block_end, &cached_state);  in btrfs_truncate_block()
4625 	ordered = btrfs_lookup_ordered_extent(BTRFS_I(inode), block_start);  in btrfs_truncate_block()
4627 		unlock_extent_cached(io_tree, block_start, block_end,  in btrfs_truncate_block()
4636 	clear_extent_bit(&BTRFS_I(inode)->io_tree, block_start, block_end,  in btrfs_truncate_block()
4640 	ret = btrfs_set_extent_delalloc(BTRFS_I(inode), block_start, block_end, 0,  in btrfs_truncate_block()
4643 		unlock_extent_cached(io_tree, block_start, block_end,  in btrfs_truncate_block()
4653 			memset(kaddr + (block_start - page_offset(page)),  in btrfs_truncate_block()
4656 			memset(kaddr + (block_start - page_offset(page)) +  offset,  in btrfs_truncate_block()
4663 	unlock_extent_cached(io_tree, block_start, block_end, &cached_state);  in btrfs_truncate_block()
4666 		set_extent_bit(&BTRFS_I(inode)->io_tree, block_start,  in btrfs_truncate_block()
4677 					block_start, blocksize, true);  in btrfs_truncate_block()
4806 			hole_em->block_start = EXTENT_MAP_HOLE;  in btrfs_cont_expand()
6599 		else if (em->block_start == EXTENT_MAP_INLINE && page)  in btrfs_get_extent()
6702 		em->block_start = EXTENT_MAP_HOLE;  in btrfs_get_extent()
6760 	em->block_start = EXTENT_MAP_HOLE;  in btrfs_get_extent()
6807 	if (em->block_start != EXTENT_MAP_HOLE &&  in btrfs_get_extent_fiemap()
6886 			em->block_start = hole_em->block_start;  in btrfs_get_extent_fiemap()
6898 			em->block_start = EXTENT_MAP_DELALLOC;  in btrfs_get_extent_fiemap()
6918 						  const u64 block_start,  in btrfs_create_dio_extent()  argument
6928 		em = create_io_em(inode, start, len, orig_start, block_start,  in btrfs_create_dio_extent()
6935 	ret = btrfs_add_ordered_extent_dio(inode, start, block_start, len,  in btrfs_create_dio_extent()
7227 				       u64 len, u64 orig_start, u64 block_start,  in create_io_em()  argument
7250 	em->block_start = block_start;  in create_io_em()
7304 	     em->block_start != EXTENT_MAP_HOLE)) {  in btrfs_get_blocks_direct_write()
7306 		u64 block_start, orig_start, orig_block_len, ram_bytes;  in btrfs_get_blocks_direct_write()  local
7313 		block_start = em->block_start + (start - em->start);  in btrfs_get_blocks_direct_write()
7317 		    btrfs_inc_nocow_writers(fs_info, block_start)) {  in btrfs_get_blocks_direct_write()
7321 						      orig_start, block_start,  in btrfs_get_blocks_direct_write()
7324 			btrfs_dec_nocow_writers(fs_info, block_start);  in btrfs_get_blocks_direct_write()
7462 	    em->block_start == EXTENT_MAP_INLINE) {  in btrfs_dio_iomap_begin()
7498 	if ((em->block_start == EXTENT_MAP_HOLE) ||  in btrfs_dio_iomap_begin()
7503 		iomap->addr = em->block_start + (start - em->start);  in btrfs_dio_iomap_begin()
9763 		em->block_start = ins.objectid;  in __btrfs_prealloc_file_range()
10007 	u64 block_start;  member
10022 	first_ppage = ALIGN(bsi->block_start, PAGE_SIZE) >> PAGE_SHIFT;  in btrfs_add_swap_extent()
10023 	next_ppage = ALIGN_DOWN(bsi->block_start + bsi->block_len,  in btrfs_add_swap_extent()
10132 		if (em->block_start == EXTENT_MAP_HOLE) {  in btrfs_swap_activate()
10137 		if (em->block_start == EXTENT_MAP_INLINE) {  in btrfs_swap_activate()
10155 		logical_block_start = em->block_start + (start - em->start);  in btrfs_swap_activate()
10222 		    bsi.block_start + bsi.block_len == physical_block_start) {  in btrfs_swap_activate()
10231 			bsi.block_start = physical_block_start;  in btrfs_swap_activate()