lru_cache: remove unused lc_private, lc_set, lc_index_of

Signed-off-by: Joel Colledge <joel.colledge@linbit.com>
Signed-off-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com>
Link: https://lore.kernel.org/r/20221122134301.69258-4-christoph.boehmwalder@linbit.comSigned-off-by: Jens Axboe <axboe@kernel.dk>

include/linux/lru_cache.h

@@ -199,7 +199,6 @@ struct lru_cache {
 	unsigned long flags;
 
 
-	void  *lc_private;
 	const char *name;
 
 	/* nr_elements there */
@@ -241,7 +240,6 @@ extern struct lru_cache *lc_create(const char *name, struct kmem_cache *cache,
 		unsigned e_count, size_t e_size, size_t e_off);
 extern void lc_reset(struct lru_cache *lc);
 extern void lc_destroy(struct lru_cache *lc);
-extern void lc_set(struct lru_cache *lc, unsigned int enr, int index);
 extern void lc_del(struct lru_cache *lc, struct lc_element *element);
 
 extern struct lc_element *lc_get_cumulative(struct lru_cache *lc, unsigned int enr);
@@ -297,6 +295,5 @@ extern bool lc_is_used(struct lru_cache *lc, unsigned int enr);
 	container_of(ptr, type, member)
 
 extern struct lc_element *lc_element_by_index(struct lru_cache *lc, unsigned i);
-extern unsigned int lc_index_of(struct lru_cache *lc, struct lc_element *e);
 
 #endif

lib/lru_cache.c

@@ -574,48 +574,6 @@ struct lc_element *lc_element_by_index(struct lru_cache *lc, unsigned i)
 	return lc->lc_element[i];
 }
 
-/**
- * lc_index_of
- * @lc: the lru cache to operate on
- * @e: the element to query for its index position in lc->element
- */
-unsigned int lc_index_of(struct lru_cache *lc, struct lc_element *e)
-{
-	PARANOIA_LC_ELEMENT(lc, e);
-	return e->lc_index;
-}
-
-/**
- * lc_set - associate index with label
- * @lc: the lru cache to operate on
- * @enr: the label to set
- * @index: the element index to associate label with.
- *
- * Used to initialize the active set to some previously recorded state.
- */
-void lc_set(struct lru_cache *lc, unsigned int enr, int index)
-{
-	struct lc_element *e;
-	struct list_head *lh;
-
-	if (index < 0 || index >= lc->nr_elements)
-		return;
-
-	e = lc_element_by_index(lc, index);
-	BUG_ON(e->lc_number != e->lc_new_number);
-	BUG_ON(e->refcnt != 0);
-
-	e->lc_number = e->lc_new_number = enr;
-	hlist_del_init(&e->colision);
-	if (enr == LC_FREE)
-		lh = &lc->free;
-	else {
-		hlist_add_head(&e->colision, lc_hash_slot(lc, enr));
-		lh = &lc->lru;
-	}
-	list_move(&e->list, lh);
-}
-
 /**
  * lc_seq_dump_details - Dump a complete LRU cache to seq in textual form.
  * @lc: the lru cache to operate on
@@ -650,7 +608,6 @@ void lc_seq_dump_details(struct seq_file *seq, struct lru_cache *lc, char *utext
 EXPORT_SYMBOL(lc_create);
 EXPORT_SYMBOL(lc_reset);
 EXPORT_SYMBOL(lc_destroy);
-EXPORT_SYMBOL(lc_set);
 EXPORT_SYMBOL(lc_del);
 EXPORT_SYMBOL(lc_try_get);
 EXPORT_SYMBOL(lc_find);
@@ -658,7 +615,6 @@ EXPORT_SYMBOL(lc_get);
 EXPORT_SYMBOL(lc_put);
 EXPORT_SYMBOL(lc_committed);
 EXPORT_SYMBOL(lc_element_by_index);
-EXPORT_SYMBOL(lc_index_of);
 EXPORT_SYMBOL(lc_seq_printf_stats);
 EXPORT_SYMBOL(lc_seq_dump_details);
 EXPORT_SYMBOL(lc_try_lock);