405 static int fetch_level_blocks(struct ext2_inode *inode, uint32_t offsets[4], int lvl, int max_lvl,  in fetch_level_blocks()  argument
409 	bool already_fetched = try_current && (offsets[lvl] == inode->offsets[lvl]);  in fetch_level_blocks()
412 	if (lvl > max_lvl) {  in fetch_level_blocks()
423 		ext2_drop_block(inode->blocks[lvl]);  in fetch_level_blocks()
425 		if (lvl == 0) {  in fetch_level_blocks()
428 			uint32_t *list = (uint32_t *)inode->blocks[lvl - 1]->data;  in fetch_level_blocks()
430 			block = sys_le32_to_cpu(list[offsets[lvl]]);  in fetch_level_blocks()
434 			inode->blocks[lvl] = ext2_get_empty_block(inode->i_fs);  in fetch_level_blocks()
436 			inode->blocks[lvl] = ext2_get_block(inode->i_fs, block);  in fetch_level_blocks()
439 		if (inode->blocks[lvl] == NULL) {  in fetch_level_blocks()
442 		LOG_DBG("[fetch] lvl:%d off:%d num:%d", lvl, offsets[lvl], block);  in fetch_level_blocks()
444 	return fetch_level_blocks(inode, offsets, lvl + 1, max_lvl, try_current);  in fetch_level_blocks()
479 static bool all_zero(const uint32_t *offsets, int lvl)  in all_zero()  argument
481 	for (int i = 0; i < lvl; ++i) {  in all_zero()
497 static int64_t delete_blocks(struct ext2_data *fs, uint32_t block_num, int lvl,  in delete_blocks()  argument
501 	__ASSERT(lvl >= 0 && lvl < MAX_OFFSETS_SIZE,  in delete_blocks()
502 			"Expected 0 <= lvl < %d (got: lvl=%d)", lvl, MAX_OFFSETS_SIZE);  in delete_blocks()
511 	if (lvl == 0) {  in delete_blocks()
526 		if (all_zero(offsets, lvl)) {  in delete_blocks()
533 		} else if (lvl == 1) {  in delete_blocks()
558 			rem = delete_blocks(fs, block_num2, lvl - 1, &offsets[1]);  in delete_blocks()
573 			rem = delete_blocks(fs, block_num2, lvl - 1, zero_offsets);  in delete_blocks()
585 		LOG_DBG("free block %d (lvl %d)", block_num, lvl);  in delete_blocks()
719 	for (int lvl = 0; lvl <= inode->block_lvl; ++lvl) {  in alloc_level_blocks()  local
720 		if (lvl == 0) {  in alloc_level_blocks()
721 			block = &inode->i_block[inode->offsets[lvl]];  in alloc_level_blocks()
723 			block = &((uint32_t *)inode->blocks[lvl - 1]->data)[inode->offsets[lvl]];  in alloc_level_blocks()
728 			ret = ext2_assign_block_num(fs, inode->blocks[lvl]);  in alloc_level_blocks()
734 			*block = sys_cpu_to_le32(inode->blocks[lvl]->num);  in alloc_level_blocks()
735 			if (lvl > 0) {  in alloc_level_blocks()
736 				ret = ext2_write_block(fs, inode->blocks[lvl-1]);  in alloc_level_blocks()
745 			LOG_DBG("Alloc lvl:%d (num: %d) %s", lvl, *block,  in alloc_level_blocks()
746 					lvl == inode->block_lvl ? "data" : "indirect");  in alloc_level_blocks()