/*
* These three functions resize the page pool.
*/
static void drop_pages(struct page_list *pl)
{
struct page_list *next;
while (pl) {
next = pl->next;
free_pl(pl);
pl = next;
}
}
void free_test(test_t *t)
{
if (t == NULL) return;
switch (t->type) {
case ANYOF:
case ALLOF:
free_tl(t->u.tl);
break;
case EXISTS:
free_sl(t->u.sl);
break;
case SIZE:
case SFALSE:
case STRUE:
break;
case HEADER:
free_sl(t->u.h.sl);
free_pl(t->u.h.pl, t->u.h.comptag);
break;
case ADDRESS:
free_sl(t->u.ae.sl);
free_pl(t->u.ae.pl, t->u.ae.comptag);
break;
case NOT:
free_test(t->u.t);
break;
}
free(t);
}
/*
* Add the provided pages to a client's free page list, releasing
* back to the system any beyond the reserved_pages limit.
*/
static void kcopyd_put_pages(struct dm_kcopyd_client *kc, struct page_list *pl)
{
struct page_list *next;
do {
next = pl->next;
if (kc->nr_free_pages >= kc->nr_reserved_pages)
free_pl(pl);
else {
pl->next = kc->pages;
kc->pages = pl;
kc->nr_free_pages++;
}
pl = next;
} while (pl);
}
