int ext4_ind_trans_blocks(struct inode *inode, int nrblocks)
{
	/*
	 * With N contiguous data blocks, we need at most
	 * N/EXT4_ADDR_PER_BLOCK(inode->i_sb) + 1 indirect blocks,
	 * 2 dindirect blocks, and 1 tindirect block
	 */
	return DIV_ROUND_UP(nrblocks, EXT4_ADDR_PER_BLOCK(inode->i_sb)) + 4;
}
int ext4_ind_trans_blocks(struct inode *inode, int nrblocks)
{
	 
	return DIV_ROUND_UP(nrblocks, EXT4_ADDR_PER_BLOCK(inode->i_sb)) + 4;
}