int page_group_by_mobility_disabled __read_mostly;
-/*
- * NOTE:
- * Don't use set_pageblock_migratetype(page, MIGRATE_ISOLATE) directly.
- * Instead, use {un}set_pageblock_isolate.
- */
void set_pageblock_migratetype(struct page *page, int migratetype)
{
return true;
}
-#ifdef CONFIG_MEMORY_ISOLATION
-static inline unsigned long nr_zone_isolate_freepages(struct zone *zone)
-{
- if (unlikely(zone->nr_pageblock_isolate))
- return zone->nr_pageblock_isolate * pageblock_nr_pages;
- return 0;
-}
-#else
-static inline unsigned long nr_zone_isolate_freepages(struct zone *zone)
-{
- return 0;
-}
-#endif
-
bool zone_watermark_ok(struct zone *z, int order, unsigned long mark,
int classzone_idx, int alloc_flags)
{
if (z->percpu_drift_mark && free_pages < z->percpu_drift_mark)
free_pages = zone_page_state_snapshot(z, NR_FREE_PAGES);
- /*
- * If the zone has MIGRATE_ISOLATE type free pages, we should consider
- * it. nr_zone_isolate_freepages is never accurate so kswapd might not
- * sleep although it could do so. But this is more desirable for memory
- * hotplug than sleeping which can cause a livelock in the direct
- * reclaim path.
- */
- free_pages -= nr_zone_isolate_freepages(z);
return __zone_watermark_ok(z, order, mark, classzone_idx, alloc_flags,
free_pages);
}
void free_contig_range(unsigned long pfn, unsigned nr_pages)
{
- for (; nr_pages--; ++pfn)
- __free_page(pfn_to_page(pfn));
+ unsigned int count = 0;
+
+ for (; nr_pages--; pfn++) {
+ struct page *page = pfn_to_page(pfn);
+
+ count += page_count(page) != 1;
+ __free_page(page);
+ }
+ WARN(count != 0, "%d pages are still in use!\n", count);
}
#endif