d_rehash
d_rehash(op->dentry);
d_rehash(op->rename.rehash);
d_rehash(op->rename.rehash);
d_rehash(op->dentry);
EXPORT_SYMBOL(d_rehash);
d_rehash(alias);
d_rehash(dentry);
d_rehash(target_dentry);
extern void d_rehash(struct dentry *);