101 				struct ext4_map_blocks *map,
3303 			      struct ext4_map_blocks *map,  in ext4_split_extent()  argument
3314 	int allocated = map->m_len;  in ext4_split_extent()
3322 	if (map->m_lblk + map->m_len < ee_block + ee_len) {  in ext4_split_extent()
3331 				map->m_lblk + map->m_len, split_flag1, flags1);  in ext4_split_extent()
3335 		allocated = ee_len - (map->m_lblk - ee_block);  in ext4_split_extent()
3341 	path = ext4_find_extent(inode, map->m_lblk, ppath, 0);  in ext4_split_extent()
3348 				 (unsigned long) map->m_lblk);  in ext4_split_extent()
3354 	if (map->m_lblk >= ee_block) {  in ext4_split_extent()
3362 				map->m_lblk, split_flag1, flags);  in ext4_split_extent()
3394 					   struct ext4_map_blocks *map,  in ext4_ext_convert_to_initialized()  argument
3405 	unsigned int ee_len, depth, map_len = map->m_len;  in ext4_ext_convert_to_initialized()
3412 		(unsigned long long)map->m_lblk, map_len);  in ext4_ext_convert_to_initialized()
3417 	if (eof_block < map->m_lblk + map_len)  in ext4_ext_convert_to_initialized()
3418 		eof_block = map->m_lblk + map_len;  in ext4_ext_convert_to_initialized()
3427 	trace_ext4_ext_convert_to_initialized_enter(inode, map, ex);  in ext4_ext_convert_to_initialized()
3431 	BUG_ON(!in_range(map->m_lblk, ee_block, ee_len));  in ext4_ext_convert_to_initialized()
3448 	if ((map->m_lblk == ee_block) &&  in ext4_ext_convert_to_initialized()
3480 				map, ex, abut_ex);  in ext4_ext_convert_to_initialized()
3494 	} else if (((map->m_lblk + map_len) == (ee_block + ee_len)) &&  in ext4_ext_convert_to_initialized()
3518 		    ((map->m_lblk + map_len) == next_lblk) &&		/*C2*/  in ext4_ext_convert_to_initialized()
3526 				map, ex, abut_ex);  in ext4_ext_convert_to_initialized()
3549 		allocated = ee_len - (map->m_lblk - ee_block);  in ext4_ext_convert_to_initialized()
3551 	WARN_ON(map->m_lblk < ee_block);  in ext4_ext_convert_to_initialized()
3590 	split_map.m_lblk = map->m_lblk;  in ext4_ext_convert_to_initialized()
3591 	split_map.m_len = map->m_len;  in ext4_ext_convert_to_initialized()
3593 	if (max_zeroout && (allocated > map->m_len)) {  in ext4_ext_convert_to_initialized()
3597 					 cpu_to_le32(map->m_lblk);  in ext4_ext_convert_to_initialized()
3600 				ext4_ext_pblock(ex) + map->m_lblk - ee_block);  in ext4_ext_convert_to_initialized()
3604 			split_map.m_lblk = map->m_lblk;  in ext4_ext_convert_to_initialized()
3606 		} else if (map->m_lblk - ee_block + map->m_len < max_zeroout) {  in ext4_ext_convert_to_initialized()
3608 			if (map->m_lblk != ee_block) {  in ext4_ext_convert_to_initialized()
3610 				zero_ex.ee_len = cpu_to_le16(map->m_lblk -  in ext4_ext_convert_to_initialized()
3620 			split_map.m_len = map->m_lblk - ee_block + map->m_len;  in ext4_ext_convert_to_initialized()
3621 			allocated = map->m_len;  in ext4_ext_convert_to_initialized()
3662 					struct ext4_map_blocks *map,  in ext4_split_convert_extents()  argument
3675 		  (unsigned long long)map->m_lblk, map->m_len);  in ext4_split_convert_extents()
3679 	if (eof_block < map->m_lblk + map->m_len)  in ext4_split_convert_extents()
3680 		eof_block = map->m_lblk + map->m_len;  in ext4_split_convert_extents()
3700 	return ext4_split_extent(handle, inode, ppath, map, split_flag, flags);  in ext4_split_convert_extents()
3705 						struct ext4_map_blocks *map,  in ext4_convert_unwritten_extents_endio()  argument
3730 	if (ee_block != map->m_lblk || ee_len > map->m_len) {  in ext4_convert_unwritten_extents_endio()
3735 			     (unsigned long long)map->m_lblk, map->m_len);  in ext4_convert_unwritten_extents_endio()
3737 		err = ext4_split_convert_extents(handle, inode, map, ppath,  in ext4_convert_unwritten_extents_endio()
3741 		path = ext4_find_extent(inode, map->m_lblk, ppath, 0);  in ext4_convert_unwritten_extents_endio()
3937 			   struct ext4_map_blocks *map,  in convert_initialized_extent()  argument
3952 	if (map->m_len > EXT_UNWRITTEN_MAX_LEN)  in convert_initialized_extent()
3953 		map->m_len = EXT_UNWRITTEN_MAX_LEN / 2;  in convert_initialized_extent()
3964 	if (ee_block != map->m_lblk || ee_len > map->m_len) {  in convert_initialized_extent()
3965 		err = ext4_split_convert_extents(handle, inode, map, ppath,  in convert_initialized_extent()
3969 		path = ext4_find_extent(inode, map->m_lblk, ppath, 0);  in convert_initialized_extent()
3976 					 (unsigned long) map->m_lblk);  in convert_initialized_extent()
3999 	err = check_eofblocks_fl(handle, inode, map->m_lblk, path, map->m_len);  in convert_initialized_extent()
4002 	map->m_flags |= EXT4_MAP_UNWRITTEN;  in convert_initialized_extent()
4003 	if (allocated > map->m_len)  in convert_initialized_extent()
4004 		allocated = map->m_len;  in convert_initialized_extent()
4005 	map->m_len = allocated;  in convert_initialized_extent()
4011 			struct ext4_map_blocks *map,  in ext4_ext_handle_unwritten_extents()  argument
4022 		  inode->i_ino, (unsigned long long)map->m_lblk, map->m_len,  in ext4_ext_handle_unwritten_extents()
4032 	trace_ext4_ext_handle_unwritten_extents(inode, map, flags,  in ext4_ext_handle_unwritten_extents()
4037 		ret = ext4_split_convert_extents(handle, inode, map, ppath,  in ext4_ext_handle_unwritten_extents()
4050 		map->m_flags |= EXT4_MAP_UNWRITTEN;  in ext4_ext_handle_unwritten_extents()
4055 		ret = ext4_convert_unwritten_extents_endio(handle, inode, map,  in ext4_ext_handle_unwritten_extents()
4059 			err = check_eofblocks_fl(handle, inode, map->m_lblk,  in ext4_ext_handle_unwritten_extents()
4060 						 path, map->m_len);  in ext4_ext_handle_unwritten_extents()
4063 		map->m_flags |= EXT4_MAP_MAPPED;  in ext4_ext_handle_unwritten_extents()
4064 		map->m_pblk = newblock;  in ext4_ext_handle_unwritten_extents()
4065 		if (allocated > map->m_len)  in ext4_ext_handle_unwritten_extents()
4066 			allocated = map->m_len;  in ext4_ext_handle_unwritten_extents()
4067 		map->m_len = allocated;  in ext4_ext_handle_unwritten_extents()
4076 		map->m_flags |= EXT4_MAP_UNWRITTEN;  in ext4_ext_handle_unwritten_extents()
4089 		map->m_flags |= EXT4_MAP_UNWRITTEN;  in ext4_ext_handle_unwritten_extents()
4094 	ret = ext4_ext_convert_to_initialized(handle, inode, map, ppath, flags);  in ext4_ext_handle_unwritten_extents()
4103 	map->m_flags |= EXT4_MAP_NEW;  in ext4_ext_handle_unwritten_extents()
4111 	if (allocated > map->m_len) {  in ext4_ext_handle_unwritten_extents()
4113 					newblock + map->m_len,  in ext4_ext_handle_unwritten_extents()
4114 					allocated - map->m_len);  in ext4_ext_handle_unwritten_extents()
4115 		allocated = map->m_len;  in ext4_ext_handle_unwritten_extents()
4117 	map->m_len = allocated;  in ext4_ext_handle_unwritten_extents()
4129 				map->m_lblk, map->m_len);  in ext4_ext_handle_unwritten_extents()
4137 	map->m_flags |= EXT4_MAP_MAPPED;  in ext4_ext_handle_unwritten_extents()
4139 		err = check_eofblocks_fl(handle, inode, map->m_lblk, path,  in ext4_ext_handle_unwritten_extents()
4140 					 map->m_len);  in ext4_ext_handle_unwritten_extents()
4145 	if (allocated > map->m_len)  in ext4_ext_handle_unwritten_extents()
4146 		allocated = map->m_len;  in ext4_ext_handle_unwritten_extents()
4148 	map->m_pblk = newblock;  in ext4_ext_handle_unwritten_extents()
4149 	map->m_len = allocated;  in ext4_ext_handle_unwritten_extents()
4196 				     struct ext4_map_blocks *map,  in get_implied_cluster_alloc()  argument
4201 	ext4_lblk_t c_offset = EXT4_LBLK_COFF(sbi, map->m_lblk);  in get_implied_cluster_alloc()
4213 	rr_cluster_start = EXT4_B2C(sbi, map->m_lblk);  in get_implied_cluster_alloc()
4219 		map->m_pblk = EXT4_PBLK_CMASK(sbi, ee_start) + c_offset;  in get_implied_cluster_alloc()
4220 		map->m_len = min(map->m_len,  in get_implied_cluster_alloc()
4231 		if (map->m_lblk < ee_block)  in get_implied_cluster_alloc()
4232 			map->m_len = min(map->m_len, ee_block - map->m_lblk);  in get_implied_cluster_alloc()
4243 		if (map->m_lblk > ee_block) {  in get_implied_cluster_alloc()
4245 			map->m_len = min(map->m_len, next - map->m_lblk);  in get_implied_cluster_alloc()
4248 		trace_ext4_get_implied_cluster_alloc_exit(sb, map, 1);  in get_implied_cluster_alloc()
4252 	trace_ext4_get_implied_cluster_alloc_exit(sb, map, 0);  in get_implied_cluster_alloc()
4276 			struct ext4_map_blocks *map, int flags)  in ext4_ext_map_blocks()  argument
4292 		  map->m_lblk, map->m_len, inode->i_ino);  in ext4_ext_map_blocks()
4293 	trace_ext4_ext_map_blocks_enter(inode, map->m_lblk, map->m_len, flags);  in ext4_ext_map_blocks()
4296 	path = ext4_find_extent(inode, map->m_lblk, NULL, 0);  in ext4_ext_map_blocks()
4313 				 (unsigned long) map->m_lblk, depth,  in ext4_ext_map_blocks()
4335 		if (in_range(map->m_lblk, ee_block, ee_len)) {  in ext4_ext_map_blocks()
4336 			newblock = map->m_lblk - ee_block + ee_start;  in ext4_ext_map_blocks()
4338 			allocated = ee_len - (map->m_lblk - ee_block);  in ext4_ext_map_blocks()
4339 			ext_debug("%u fit into %u:%d -> %llu\n", map->m_lblk,  in ext4_ext_map_blocks()
4349 						handle, inode, map, &path,  in ext4_ext_map_blocks()
4356 				handle, inode, map, &path, flags,  in ext4_ext_map_blocks()
4375 		ext4_ext_put_gap_in_cache(inode, path, map->m_lblk);  in ext4_ext_map_blocks()
4382 	newex.ee_block = cpu_to_le32(map->m_lblk);  in ext4_ext_map_blocks()
4383 	cluster_offset = EXT4_LBLK_COFF(sbi, map->m_lblk);  in ext4_ext_map_blocks()
4390 	    get_implied_cluster_alloc(inode->i_sb, map, ex, path)) {  in ext4_ext_map_blocks()
4391 		ar.len = allocated = map->m_len;  in ext4_ext_map_blocks()
4392 		newblock = map->m_pblk;  in ext4_ext_map_blocks()
4398 	ar.lleft = map->m_lblk;  in ext4_ext_map_blocks()
4402 	ar.lright = map->m_lblk;  in ext4_ext_map_blocks()
4411 	    get_implied_cluster_alloc(inode->i_sb, map, ex2, path)) {  in ext4_ext_map_blocks()
4412 		ar.len = allocated = map->m_len;  in ext4_ext_map_blocks()
4413 		newblock = map->m_pblk;  in ext4_ext_map_blocks()
4424 	if (map->m_len > EXT_INIT_MAX_LEN &&  in ext4_ext_map_blocks()
4426 		map->m_len = EXT_INIT_MAX_LEN;  in ext4_ext_map_blocks()
4427 	else if (map->m_len > EXT_UNWRITTEN_MAX_LEN &&  in ext4_ext_map_blocks()
4429 		map->m_len = EXT_UNWRITTEN_MAX_LEN;  in ext4_ext_map_blocks()
4432 	newex.ee_len = cpu_to_le16(map->m_len);  in ext4_ext_map_blocks()
4437 		allocated = map->m_len;  in ext4_ext_map_blocks()
4441 	ar.goal = ext4_ext_find_goal(inode, path, map->m_lblk);  in ext4_ext_map_blocks()
4442 	ar.logical = map->m_lblk;  in ext4_ext_map_blocks()
4451 	offset = EXT4_LBLK_COFF(sbi, map->m_lblk);  in ext4_ext_map_blocks()
4484 		map->m_flags |= EXT4_MAP_UNWRITTEN;  in ext4_ext_map_blocks()
4498 		err = check_eofblocks_fl(handle, inode, map->m_lblk,  in ext4_ext_map_blocks()
4527 	if (allocated > map->m_len)  in ext4_ext_map_blocks()
4528 		allocated = map->m_len;  in ext4_ext_map_blocks()
4529 	map->m_flags |= EXT4_MAP_NEW;  in ext4_ext_map_blocks()
4541 						map->m_lblk, allocated);  in ext4_ext_map_blocks()
4615 	if (allocated > map->m_len)  in ext4_ext_map_blocks()
4616 		allocated = map->m_len;  in ext4_ext_map_blocks()
4618 	map->m_flags |= EXT4_MAP_MAPPED;  in ext4_ext_map_blocks()
4619 	map->m_pblk = newblock;  in ext4_ext_map_blocks()
4620 	map->m_len = allocated;  in ext4_ext_map_blocks()
4625 	trace_ext4_ext_map_blocks_exit(inode, flags, map,  in ext4_ext_map_blocks()
4674 	struct ext4_map_blocks map;  in ext4_alloc_file_blocks()  local
4678 	map.m_lblk = offset;  in ext4_alloc_file_blocks()
4679 	map.m_len = len;  in ext4_alloc_file_blocks()
4716 		ret = ext4_map_blocks(handle, inode, &map, flags);  in ext4_alloc_file_blocks()
4720 				   inode->i_ino, map.m_lblk,  in ext4_alloc_file_blocks()
4721 				   map.m_len, ret);  in ext4_alloc_file_blocks()
4726 		map.m_lblk += ret;  in ext4_alloc_file_blocks()
4727 		map.m_len = len = len - ret;  in ext4_alloc_file_blocks()
4728 		epos = (loff_t)map.m_lblk << inode->i_blkbits;  in ext4_alloc_file_blocks()
5030 	struct ext4_map_blocks map;  in ext4_convert_unwritten_extents()  local
5033 	map.m_lblk = offset >> blkbits;  in ext4_convert_unwritten_extents()
5039 		      map.m_lblk);  in ext4_convert_unwritten_extents()
5058 		map.m_lblk += ret;  in ext4_convert_unwritten_extents()
5059 		map.m_len = (max_blocks -= ret);  in ext4_convert_unwritten_extents()
5068 		ret = ext4_map_blocks(handle, inode, &map,  in ext4_convert_unwritten_extents()
5074 				     inode->i_ino, map.m_lblk,  in ext4_convert_unwritten_extents()
5075 				     map.m_len, ret);  in ext4_convert_unwritten_extents()