inode_doinit_with_dentry
static int inode_doinit_with_dentry(struct inode *inode, struct dentry *opt_dentry);
inode_doinit_with_dentry(inode, dentry);
rc = inode_doinit_with_dentry(root_inode, root);
inode_doinit_with_dentry(inode, NULL);
inode_doinit_with_dentry(inode, dentry);