int v9fs_init_inode(struct v9fs_session_info *v9ses,
		    struct inode *inode, umode_t mode, dev_t rdev)
int v9fs_init_inode(struct v9fs_session_info *v9ses,
		    struct inode *inode, struct p9_qid *qid, umode_t mode, dev_t rdev)