96 				       u64 orig_start, u64 block_start,
905 		if (em->block_start >= EXTENT_MAP_LAST_BYTE) {  in get_extent_allocation_hint()
908 			if (em && em->block_start < EXTENT_MAP_LAST_BYTE)  in get_extent_allocation_hint()
909 				alloc_hint = em->block_start;  in get_extent_allocation_hint()
913 			alloc_hint = em->block_start;  in get_extent_allocation_hint()
4846 	u64 block_start;  in btrfs_truncate_block()  local
4853 	block_start = round_down(from, blocksize);  in btrfs_truncate_block()
4854 	block_end = block_start + blocksize - 1;  in btrfs_truncate_block()
4857 					   block_start, blocksize);  in btrfs_truncate_block()
4865 					     block_start, blocksize, true);  in btrfs_truncate_block()
4886 	lock_extent_bits(io_tree, block_start, block_end, &cached_state);  in btrfs_truncate_block()
4889 	ordered = btrfs_lookup_ordered_extent(inode, block_start);  in btrfs_truncate_block()
4891 		unlock_extent_cached(io_tree, block_start, block_end,  in btrfs_truncate_block()
4900 	clear_extent_bit(&BTRFS_I(inode)->io_tree, block_start, block_end,  in btrfs_truncate_block()
4905 	ret = btrfs_set_extent_delalloc(inode, block_start, block_end, 0,  in btrfs_truncate_block()
4908 		unlock_extent_cached(io_tree, block_start, block_end,  in btrfs_truncate_block()
4918 			memset(kaddr + (block_start - page_offset(page)),  in btrfs_truncate_block()
4921 			memset(kaddr + (block_start - page_offset(page)) +  offset,  in btrfs_truncate_block()
4928 	unlock_extent_cached(io_tree, block_start, block_end, &cached_state);  in btrfs_truncate_block()
4932 		btrfs_delalloc_release_space(inode, data_reserved, block_start,  in btrfs_truncate_block()
5065 			hole_em->block_start = EXTENT_MAP_HOLE;  in btrfs_cont_expand()
6810 		else if (em->block_start == EXTENT_MAP_INLINE && page)  in btrfs_get_extent()
6972 	em->block_start = EXTENT_MAP_HOLE;  in btrfs_get_extent()
7022 	if (em->block_start != EXTENT_MAP_HOLE &&  in btrfs_get_extent_fiemap()
7102 			em->block_start = hole_em->block_start;  in btrfs_get_extent_fiemap()
7110 			em->block_start = EXTENT_MAP_DELALLOC;  in btrfs_get_extent_fiemap()
7130 						  const u64 block_start,  in btrfs_create_dio_extent()  argument
7141 				  block_start, block_len, orig_block_len,  in btrfs_create_dio_extent()
7148 	ret = btrfs_add_ordered_extent_dio(inode, start, block_start,  in btrfs_create_dio_extent()
7420 				       u64 orig_start, u64 block_start,  in create_io_em()  argument
7444 	em->block_start = block_start;  in create_io_em()
7484 	if (em->block_start == EXTENT_MAP_HOLE ||  in btrfs_get_blocks_direct_read()
7490 	bh_result->b_blocknr = (em->block_start + (start - em->start)) >>  in btrfs_get_blocks_direct_read()
7520 	     em->block_start != EXTENT_MAP_HOLE)) {  in btrfs_get_blocks_direct_write()
7522 		u64 block_start, orig_start, orig_block_len, ram_bytes;  in btrfs_get_blocks_direct_write()  local
7529 		block_start = em->block_start + (start - em->start);  in btrfs_get_blocks_direct_write()
7533 		    btrfs_inc_nocow_writers(fs_info, block_start)) {  in btrfs_get_blocks_direct_write()
7537 						      orig_start, block_start,  in btrfs_get_blocks_direct_write()
7540 			btrfs_dec_nocow_writers(fs_info, block_start);  in btrfs_get_blocks_direct_write()
7573 	bh_result->b_blocknr = (em->block_start + (start - em->start)) >>  in btrfs_get_blocks_direct_write()
7659 	    em->block_start == EXTENT_MAP_INLINE) {  in btrfs_get_blocks_direct()
10296 		em->block_start = ins.objectid;  in __btrfs_prealloc_file_range()