static struct entry *pop_old(struct smq_policy *mq, struct queue *q, unsigned max_level)
{
struct entry *e = q_pop_old(q, max_level);
if (e)
h_remove(&mq->table, e);
return e;
}
static void
memqueue_free_consumer(consumer_t *consumer)
{
h_remove(consumer->memqueue->consumers, consumer->consumer_id);
free(consumer->consumer_id);
free(consumer);
}
static struct entry *update_hotspot_queue(struct smq_policy *mq, dm_oblock_t b, struct bio *bio)
{
unsigned hi;
dm_oblock_t hb = to_hblock(mq, b);
struct entry *e = h_lookup(&mq->hotspot_table, hb);
if (e) {
stats_level_accessed(&mq->hotspot_stats, e->level);
hi = get_index(&mq->hotspot_alloc, e);
q_requeue(&mq->hotspot, e,
test_and_set_bit(hi, mq->hotspot_hit_bits) ?
0u : mq->hotspot_level_jump);
} else {
stats_miss(&mq->hotspot_stats);
e = alloc_entry(&mq->hotspot_alloc);
if (!e) {
e = q_pop(&mq->hotspot);
if (e) {
h_remove(&mq->hotspot_table, e);
hi = get_index(&mq->hotspot_alloc, e);
clear_bit(hi, mq->hotspot_hit_bits);
}
}
if (e) {
e->oblock = hb;
q_push(&mq->hotspot, e);
h_insert(&mq->hotspot_table, e);
}
}
return e;
}
/*
* Removes an entry from cache. Removes from the hash table.
*/
static void __del(struct smq_policy *mq, struct queue *q, struct entry *e)
{
q_del(q, e);
h_remove(&mq->table, e);
}
