/* interval tree, for LDLM_EXTENT. */
extern struct kmem_cache *ldlm_interval_slab; /* slab cache for ldlm_interval */
-extern void ldlm_interval_attach(struct ldlm_interval *n, struct ldlm_lock *l);
+void ldlm_interval_attach(struct ldlm_interval *n, struct ldlm_lock *l);
struct ldlm_interval *ldlm_interval_detach(struct ldlm_lock *l);
struct ldlm_interval *ldlm_interval_alloc(struct ldlm_lock *lock);
void ldlm_interval_free(struct ldlm_interval *node);