+/* Remove page from the per-cpu list, caller must protect the list */
+static struct page *__rmqueue_pcplist(struct zone *zone, int migratetype,
+ bool cold, struct per_cpu_pages *pcp,
+ struct list_head *list)
+{
+ struct page *page;
+
+ VM_BUG_ON(in_interrupt());
+
+ do {
+ if (list_empty(list)) {
+ pcp->count += rmqueue_bulk(zone, 0,
+ pcp->batch, list,
+ migratetype, cold);
+ if (unlikely(list_empty(list)))
+ return NULL;
+ }
+
+ if (cold)
+ page = list_last_entry(list, struct page, lru);
+ else
+ page = list_first_entry(list, struct page, lru);
+
+ list_del(&page->lru);
+ pcp->count--;
+ } while (check_new_pcp(page));
+
+ return page;
+}
+
+/* Lock and remove page from the per-cpu list */
+static struct page *rmqueue_pcplist(struct zone *preferred_zone,
+ struct zone *zone, unsigned int order,
+ gfp_t gfp_flags, int migratetype)
+{
+ struct per_cpu_pages *pcp;
+ struct list_head *list;
+ bool cold = ((gfp_flags & __GFP_COLD) != 0);
+ struct page *page;
+
+ preempt_disable();
+ pcp = &this_cpu_ptr(zone->pageset)->pcp;
+ list = &pcp->lists[migratetype];
+ page = __rmqueue_pcplist(zone, migratetype, cold, pcp, list);
+ if (page) {
+ __count_zid_vm_events(PGALLOC, page_zonenum(page), 1 << order);
+ zone_statistics(preferred_zone, zone);
+ }
+ preempt_enable();
+ return page;
+}
+