int (*d_compare)(const struct dentry *, const struct dentry *,
unsigned int, const char *, const struct qstr *);
int (*d_delete)(struct dentry *);
+ int (*d_init)(struct dentry *);
void (*d_release)(struct dentry *);
void (*d_iput)(struct dentry *, struct inode *);
char *(*d_dname)((struct dentry *dentry, char *buffer, int buflen);
d_hash no no no maybe
d_compare: yes no no maybe
d_delete: no yes no no
+d_init: no no yes no
d_release: no no yes no
d_prune: no yes no no
d_iput: no no yes no