97 static int ext4_split_extent(handle_t *handle,
104 static int ext4_split_extent_at(handle_t *handle,
114 static int ext4_ext_truncate_extend_restart(handle_t *handle,  in ext4_ext_truncate_extend_restart()  argument
120 	if (!ext4_handle_valid(handle))  in ext4_ext_truncate_extend_restart()
122 	if (handle->h_buffer_credits > needed)  in ext4_ext_truncate_extend_restart()
124 	err = ext4_journal_extend(handle, needed);  in ext4_ext_truncate_extend_restart()
127 	err = ext4_truncate_restart_trans(handle, inode, needed);  in ext4_ext_truncate_extend_restart()
139 static int ext4_ext_get_access(handle_t *handle, struct inode *inode,  in ext4_ext_get_access()  argument
145 		return ext4_journal_get_write_access(handle, path->p_bh);  in ext4_ext_get_access()
158 int __ext4_ext_dirty(const char *where, unsigned int line, handle_t *handle,  in __ext4_ext_dirty()  argument
167 		err = __ext4_handle_dirty_metadata(where, line, handle,  in __ext4_ext_dirty()
171 		err = ext4_mark_inode_dirty(handle, inode);  in __ext4_ext_dirty()
226 ext4_ext_new_meta_block(handle_t *handle, struct inode *inode,  in ext4_ext_new_meta_block()  argument
233 	newblock = ext4_new_meta_blocks(handle, inode, goal, flags,  in ext4_ext_new_meta_block()
293 ext4_force_split_extent_at(handle_t *handle, struct inode *inode,  in ext4_force_split_extent_at()  argument
300 	return ext4_split_extent_at(handle, inode, ppath, lblk, unwritten ?  in ext4_force_split_extent_at()
844 int ext4_ext_tree_init(handle_t *handle, struct inode *inode)  in ext4_ext_tree_init()  argument
853 	ext4_mark_inode_dirty(handle, inode);  in ext4_ext_tree_init()
946 static int ext4_ext_insert_index(handle_t *handle, struct inode *inode,  in ext4_ext_insert_index()  argument
953 	err = ext4_ext_get_access(handle, inode, curp);  in ext4_ext_insert_index()
1006 	err = ext4_ext_dirty(handle, inode, curp);  in ext4_ext_insert_index()
1022 static int ext4_ext_split(handle_t *handle, struct inode *inode,  in ext4_ext_split()  argument
1077 		newblock = ext4_ext_new_meta_block(handle, inode, path,  in ext4_ext_split()
1098 	err = ext4_journal_get_create_access(handle, bh);  in ext4_ext_split()
1131 	err = ext4_handle_dirty_metadata(handle, inode, bh);  in ext4_ext_split()
1139 		err = ext4_ext_get_access(handle, inode, path + depth);  in ext4_ext_split()
1143 		err = ext4_ext_dirty(handle, inode, path + depth);  in ext4_ext_split()
1171 		err = ext4_journal_get_create_access(handle, bh);  in ext4_ext_split()
1210 		err = ext4_handle_dirty_metadata(handle, inode, bh);  in ext4_ext_split()
1218 			err = ext4_ext_get_access(handle, inode, path + i);  in ext4_ext_split()
1222 			err = ext4_ext_dirty(handle, inode, path + i);  in ext4_ext_split()
1231 	err = ext4_ext_insert_index(handle, inode, path + at,  in ext4_ext_split()
1246 			ext4_free_blocks(handle, inode, NULL, ablocks[i], 1,  in ext4_ext_split()
1263 static int ext4_ext_grow_indepth(handle_t *handle, struct inode *inode,  in ext4_ext_grow_indepth()  argument
1280 	newblock = ext4_new_meta_blocks(handle, inode, goal, flags,  in ext4_ext_grow_indepth()
1290 	err = ext4_journal_get_create_access(handle, bh);  in ext4_ext_grow_indepth()
1313 	err = ext4_handle_dirty_metadata(handle, inode, bh);  in ext4_ext_grow_indepth()
1333 	ext4_mark_inode_dirty(handle, inode);  in ext4_ext_grow_indepth()
1345 static int ext4_ext_create_new_leaf(handle_t *handle, struct inode *inode,  in ext4_ext_create_new_leaf()  argument
1370 		err = ext4_ext_split(handle, inode, mb_flags, path, newext, i);  in ext4_ext_create_new_leaf()
1382 		err = ext4_ext_grow_indepth(handle, inode, mb_flags);  in ext4_ext_create_new_leaf()
1657 static int ext4_ext_correct_indexes(handle_t *handle, struct inode *inode,  in ext4_ext_correct_indexes()  argument
1690 	err = ext4_ext_get_access(handle, inode, path + k);  in ext4_ext_correct_indexes()
1694 	err = ext4_ext_dirty(handle, inode, path + k);  in ext4_ext_correct_indexes()
1702 		err = ext4_ext_get_access(handle, inode, path + k);  in ext4_ext_correct_indexes()
1706 		err = ext4_ext_dirty(handle, inode, path + k);  in ext4_ext_correct_indexes()
1800 static void ext4_ext_try_to_merge_up(handle_t *handle,  in ext4_ext_try_to_merge_up()  argument
1818 	if (ext4_journal_extend(handle, 2))  in ext4_ext_try_to_merge_up()
1837 	ext4_free_blocks(handle, inode, NULL, blk, 1,  in ext4_ext_try_to_merge_up()
1845 static void ext4_ext_try_to_merge(handle_t *handle,  in ext4_ext_try_to_merge()  argument
1863 	ext4_ext_try_to_merge_up(handle, inode, path);  in ext4_ext_try_to_merge()
1923 int ext4_ext_insert_extent(handle_t *handle, struct inode *inode,  in ext4_ext_insert_extent()  argument
1982 			err = ext4_ext_get_access(handle, inode,  in ext4_ext_insert_extent()
2008 			err = ext4_ext_get_access(handle, inode,  in ext4_ext_insert_extent()
2060 	err = ext4_ext_create_new_leaf(handle, inode, mb_flags, gb_flags,  in ext4_ext_insert_extent()
2070 	err = ext4_ext_get_access(handle, inode, path + depth);  in ext4_ext_insert_extent()
2128 		ext4_ext_try_to_merge(handle, inode, path, nearex);  in ext4_ext_insert_extent()
2132 	err = ext4_ext_correct_indexes(handle, inode, path);  in ext4_ext_insert_extent()
2136 	err = ext4_ext_dirty(handle, inode, path + path->p_depth);  in ext4_ext_insert_extent()
2353 static int ext4_ext_rm_idx(handle_t *handle, struct inode *inode,  in ext4_ext_rm_idx()  argument
2367 	err = ext4_ext_get_access(handle, inode, path);  in ext4_ext_rm_idx()
2378 	err = ext4_ext_dirty(handle, inode, path);  in ext4_ext_rm_idx()
2384 	ext4_free_blocks(handle, inode, NULL, leaf, 1,  in ext4_ext_rm_idx()
2391 		err = ext4_ext_get_access(handle, inode, path);  in ext4_ext_rm_idx()
2395 		err = ext4_ext_dirty(handle, inode, path);  in ext4_ext_rm_idx()
2474 static int ext4_remove_blocks(handle_t *handle, struct inode *inode,  in ext4_remove_blocks()  argument
2502 		ext4_free_blocks(handle, inode, NULL,  in ext4_remove_blocks()
2542 		ext4_free_blocks(handle, inode, NULL, pblk, num, flags);  in ext4_remove_blocks()
2590 ext4_ext_rm_leaf(handle_t *handle, struct inode *inode,  in ext4_ext_rm_leaf()  argument
2690 		err = ext4_ext_truncate_extend_restart(handle, inode, credits);  in ext4_ext_rm_leaf()
2694 		err = ext4_ext_get_access(handle, inode, path + depth);  in ext4_ext_rm_leaf()
2698 		err = ext4_remove_blocks(handle, inode, ex, partial_cluster,  in ext4_ext_rm_leaf()
2735 		err = ext4_ext_dirty(handle, inode, path + depth);  in ext4_ext_rm_leaf()
2747 		err = ext4_ext_correct_indexes(handle, inode, path);  in ext4_ext_rm_leaf()
2759 			ext4_free_blocks(handle, inode, NULL,  in ext4_ext_rm_leaf()
2770 		err = ext4_ext_rm_idx(handle, inode, path, depth);  in ext4_ext_rm_leaf()
2804 	handle_t *handle;  in ext4_ext_remove_space()  local
2810 	handle = ext4_journal_start(inode, EXT4_HT_TRUNCATE, depth + 1);  in ext4_ext_remove_space()
2811 	if (IS_ERR(handle))  in ext4_ext_remove_space()
2812 		return PTR_ERR(handle);  in ext4_ext_remove_space()
2832 			ext4_journal_stop(handle);  in ext4_ext_remove_space()
2876 			err = ext4_force_split_extent_at(handle, inode, &path,  in ext4_ext_remove_space()
2914 			ext4_journal_stop(handle);  in ext4_ext_remove_space()
2931 			err = ext4_ext_rm_leaf(handle, inode, path,  in ext4_ext_remove_space()
2995 				err = ext4_ext_rm_idx(handle, inode, path, i);  in ext4_ext_remove_space()
3016 		ext4_free_blocks(handle, inode, NULL,  in ext4_ext_remove_space()
3028 		err = ext4_ext_get_access(handle, inode, path);  in ext4_ext_remove_space()
3033 			err = ext4_ext_dirty(handle, inode, path);  in ext4_ext_remove_space()
3042 	ext4_journal_stop(handle);  in ext4_ext_remove_space()
3156 static int ext4_split_extent_at(handle_t *handle,  in ext4_split_extent_at()  argument
3191 	err = ext4_ext_get_access(handle, inode, path + depth);  in ext4_split_extent_at()
3207 			ext4_ext_try_to_merge(handle, inode, path, ex);  in ext4_split_extent_at()
3209 		err = ext4_ext_dirty(handle, inode, path + path->p_depth);  in ext4_split_extent_at()
3223 	err = ext4_ext_dirty(handle, inode, path + depth);  in ext4_split_extent_at()
3234 	err = ext4_ext_insert_extent(handle, inode, ppath, &newex, flags);  in ext4_split_extent_at()
3265 		ext4_ext_try_to_merge(handle, inode, path, ex);  in ext4_split_extent_at()
3266 		err = ext4_ext_dirty(handle, inode, path + path->p_depth);  in ext4_split_extent_at()
3283 	ext4_ext_dirty(handle, inode, path + path->p_depth);  in ext4_split_extent_at()
3298 static int ext4_split_extent(handle_t *handle,  in ext4_split_extent()  argument
3328 		err = ext4_split_extent_at(handle, inode, ppath,  in ext4_split_extent()
3359 		err = ext4_split_extent_at(handle, inode, ppath,  in ext4_split_extent()
3390 static int ext4_ext_convert_to_initialized(handle_t *handle,  in ext4_ext_convert_to_initialized()  argument
3473 			err = ext4_ext_get_access(handle, inode, path + depth);  in ext4_ext_convert_to_initialized()
3519 			err = ext4_ext_get_access(handle, inode, path + depth);  in ext4_ext_convert_to_initialized()
3541 		ext4_ext_dirty(handle, inode, path + depth);  in ext4_ext_convert_to_initialized()
3569 		err = ext4_ext_get_access(handle, inode, path + depth);  in ext4_ext_convert_to_initialized()
3573 		ext4_ext_try_to_merge(handle, inode, path, ex);  in ext4_ext_convert_to_initialized()
3574 		err = ext4_ext_dirty(handle, inode, path + path->p_depth);  in ext4_ext_convert_to_initialized()
3620 	err = ext4_split_extent(handle, inode, ppath, &split_map, split_flag,  in ext4_ext_convert_to_initialized()
3655 static int ext4_split_convert_extents(handle_t *handle,  in ext4_split_convert_extents()  argument
3695 	return ext4_split_extent(handle, inode, ppath, map, split_flag, flags);  in ext4_split_convert_extents()
3698 static int ext4_convert_unwritten_extents_endio(handle_t *handle,  in ext4_convert_unwritten_extents_endio()  argument
3732 		err = ext4_split_convert_extents(handle, inode, map, ppath,  in ext4_convert_unwritten_extents_endio()
3743 	err = ext4_ext_get_access(handle, inode, path + depth);  in ext4_convert_unwritten_extents_endio()
3752 	ext4_ext_try_to_merge(handle, inode, path, ex);  in ext4_convert_unwritten_extents_endio()
3755 	err = ext4_ext_dirty(handle, inode, path + path->p_depth);  in ext4_convert_unwritten_extents_endio()
3772 static int check_eofblocks_fl(handle_t *handle, struct inode *inode,  in check_eofblocks_fl()  argument
3819 	return ext4_mark_inode_dirty(handle, inode);  in check_eofblocks_fl()
3931 convert_initialized_extent(handle_t *handle, struct inode *inode,  in convert_initialized_extent()  argument
3960 		err = ext4_split_convert_extents(handle, inode, map, ppath,  in convert_initialized_extent()
3976 	err = ext4_ext_get_access(handle, inode, path + depth);  in convert_initialized_extent()
3985 	ext4_ext_try_to_merge(handle, inode, path, ex);  in convert_initialized_extent()
3988 	err = ext4_ext_dirty(handle, inode, path + path->p_depth);  in convert_initialized_extent()
3993 	ext4_update_inode_fsync_trans(handle, inode, 1);  in convert_initialized_extent()
3994 	err = check_eofblocks_fl(handle, inode, map->m_lblk, path, map->m_len);  in convert_initialized_extent()
4005 ext4_ext_handle_unwritten_extents(handle_t *handle, struct inode *inode,  in ext4_ext_handle_unwritten_extents()  argument
4032 		ret = ext4_split_convert_extents(handle, inode, map, ppath,  in ext4_ext_handle_unwritten_extents()
4050 		ret = ext4_convert_unwritten_extents_endio(handle, inode, map,  in ext4_ext_handle_unwritten_extents()
4053 			ext4_update_inode_fsync_trans(handle, inode, 1);  in ext4_ext_handle_unwritten_extents()
4054 			err = check_eofblocks_fl(handle, inode, map->m_lblk,  in ext4_ext_handle_unwritten_extents()
4089 	ret = ext4_ext_convert_to_initialized(handle, inode, map, ppath, flags);  in ext4_ext_handle_unwritten_extents()
4091 		ext4_update_inode_fsync_trans(handle, inode, 1);  in ext4_ext_handle_unwritten_extents()
4134 		err = check_eofblocks_fl(handle, inode, map->m_lblk, path,  in ext4_ext_handle_unwritten_extents()
4270 int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,  in ext4_ext_map_blocks()  argument
4344 						handle, inode, map, &path,  in ext4_ext_map_blocks()
4351 				handle, inode, map, &path, flags,  in ext4_ext_map_blocks()
4459 	newblock = ext4_mb_new_blocks(handle, &ar, &err);  in ext4_ext_map_blocks()
4491 		err = check_eofblocks_fl(handle, inode, map->m_lblk,  in ext4_ext_map_blocks()
4494 		err = ext4_ext_insert_extent(handle, inode, &path,  in ext4_ext_map_blocks()
4512 		ext4_free_blocks(handle, inode, NULL, newblock,  in ext4_ext_map_blocks()
4604 		ext4_update_inode_fsync_trans(handle, inode, 1);  in ext4_ext_map_blocks()
4606 		ext4_update_inode_fsync_trans(handle, inode, 0);  in ext4_ext_map_blocks()
4623 void ext4_ext_truncate(handle_t *handle, struct inode *inode)  in ext4_ext_truncate()  argument
4637 	ext4_mark_inode_dirty(handle, inode);  in ext4_ext_truncate()
4662 	handle_t *handle;  in ext4_alloc_file_blocks()  local
4687 		handle = ext4_journal_start(inode, EXT4_HT_MAP_BLOCKS,  in ext4_alloc_file_blocks()
4689 		if (IS_ERR(handle)) {  in ext4_alloc_file_blocks()
4690 			ret = PTR_ERR(handle);  in ext4_alloc_file_blocks()
4693 		ret = ext4_map_blocks(handle, inode, &map, flags);  in ext4_alloc_file_blocks()
4699 			ext4_mark_inode_dirty(handle, inode);  in ext4_alloc_file_blocks()
4700 			ret2 = ext4_journal_stop(handle);  in ext4_alloc_file_blocks()
4717 		ext4_mark_inode_dirty(handle, inode);  in ext4_alloc_file_blocks()
4718 		ret2 = ext4_journal_stop(handle);  in ext4_alloc_file_blocks()
4735 	handle_t *handle = NULL;  in ext4_zero_range()  local
4852 	handle = ext4_journal_start(inode, EXT4_HT_MISC, credits);  in ext4_zero_range()
4853 	if (IS_ERR(handle)) {  in ext4_zero_range()
4854 		ret = PTR_ERR(handle);  in ext4_zero_range()
4870 	ext4_mark_inode_dirty(handle, inode);  in ext4_zero_range()
4873 	ret = ext4_zero_partial_blocks(handle, inode, offset, len);  in ext4_zero_range()
4876 		ext4_handle_sync(handle);  in ext4_zero_range()
4878 	ext4_journal_stop(handle);  in ext4_zero_range()
4996 int ext4_convert_unwritten_extents(handle_t *handle, struct inode *inode,  in ext4_convert_unwritten_extents()  argument
5017 	if (handle) {  in ext4_convert_unwritten_extents()
5018 		handle = ext4_journal_start_reserved(handle,  in ext4_convert_unwritten_extents()
5020 		if (IS_ERR(handle))  in ext4_convert_unwritten_extents()
5021 			return PTR_ERR(handle);  in ext4_convert_unwritten_extents()
5033 			handle = ext4_journal_start(inode, EXT4_HT_MAP_BLOCKS,  in ext4_convert_unwritten_extents()
5035 			if (IS_ERR(handle)) {  in ext4_convert_unwritten_extents()
5036 				ret = PTR_ERR(handle);  in ext4_convert_unwritten_extents()
5040 		ret = ext4_map_blocks(handle, inode, &map,  in ext4_convert_unwritten_extents()
5048 		ext4_mark_inode_dirty(handle, inode);  in ext4_convert_unwritten_extents()
5050 			ret2 = ext4_journal_stop(handle);  in ext4_convert_unwritten_extents()
5055 		ret2 = ext4_journal_stop(handle);  in ext4_convert_unwritten_extents()
5202 ext4_access_path(handle_t *handle, struct inode *inode,  in ext4_access_path()  argument
5207 	if (!ext4_handle_valid(handle))  in ext4_access_path()
5216 	if (handle->h_buffer_credits < 7) {  in ext4_access_path()
5218 		err = ext4_ext_truncate_extend_restart(handle, inode, credits);  in ext4_access_path()
5224 	err = ext4_ext_get_access(handle, inode, path);  in ext4_access_path()
5236 			    struct inode *inode, handle_t *handle,  in ext4_ext_shift_path_extents()  argument
5252 			err = ext4_access_path(handle, inode, path + depth);  in ext4_ext_shift_path_extents()
5273 			err = ext4_ext_dirty(handle, inode, path + depth);  in ext4_ext_shift_path_extents()
5282 		err = ext4_access_path(handle, inode, path + depth);  in ext4_ext_shift_path_extents()
5287 		err = ext4_ext_dirty(handle, inode, path + depth);  in ext4_ext_shift_path_extents()
5309 ext4_ext_shift_extents(struct inode *inode, handle_t *handle,  in ext4_ext_shift_extents()  argument
5379 				handle, &start);  in ext4_ext_shift_extents()
5398 	handle_t *handle;  in ext4_collapse_range()  local
5480 	handle = ext4_journal_start(inode, EXT4_HT_TRUNCATE, credits);  in ext4_collapse_range()
5481 	if (IS_ERR(handle)) {  in ext4_collapse_range()
5482 		ret = PTR_ERR(handle);  in ext4_collapse_range()
5503 	ret = ext4_ext_shift_extents(inode, handle, punch_stop,  in ext4_collapse_range()
5516 		ext4_handle_sync(handle);  in ext4_collapse_range()
5518 	ext4_mark_inode_dirty(handle, inode);  in ext4_collapse_range()
5521 	ext4_journal_stop(handle);  in ext4_collapse_range()
5551 ext4_swap_extents(handle_t *handle, struct inode *inode1,  in ext4_swap_extents()  argument
5633 			*erp = ext4_force_split_extent_at(handle, inode1,  in ext4_swap_extents()
5640 			*erp = ext4_force_split_extent_at(handle, inode2,  in ext4_swap_extents()
5659 			*erp = ext4_force_split_extent_at(handle, inode1,  in ext4_swap_extents()
5666 			*erp = ext4_force_split_extent_at(handle, inode2,  in ext4_swap_extents()
5677 		*erp = ext4_ext_get_access(handle, inode1, path1 + path1->p_depth);  in ext4_swap_extents()
5680 		*erp = ext4_ext_get_access(handle, inode2, path2 + path2->p_depth);  in ext4_swap_extents()
5695 		ext4_ext_try_to_merge(handle, inode2, path2, ex2);  in ext4_swap_extents()
5696 		ext4_ext_try_to_merge(handle, inode1, path1, ex1);  in ext4_swap_extents()
5697 		*erp = ext4_ext_dirty(handle, inode2, path2 +  in ext4_swap_extents()
5701 		*erp = ext4_ext_dirty(handle, inode1, path1 +  in ext4_swap_extents()