diff --git a/mm/page_alloc.c b/mm/page_alloc.c index ecc3dbad606b..6c717ad5f5c5 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1947,6 +1947,14 @@ void __init page_alloc_init_late(void) /* Block until all are initialised */ wait_for_completion(&pgdat_init_all_done_comp); + /* + * The number of managed pages has changed due to the initialisation + * so the pcpu batch and high limits needs to be updated or the limits + * will be artificially small. + */ + for_each_populated_zone(zone) + zone_pcp_update(zone); + /* * We initialized the rest of the deferred pages. Permanently disable * on-demand struct page initialization. @@ -8514,7 +8522,6 @@ void free_contig_range(unsigned long pfn, unsigned int nr_pages) WARN(count != 0, "%d pages are still in use!\n", count); } -#ifdef CONFIG_MEMORY_HOTPLUG /* * The zone indicated has a new number of managed_pages; batch sizes and percpu * page high values need to be recalulated. @@ -8528,7 +8535,6 @@ void __meminit zone_pcp_update(struct zone *zone) per_cpu_ptr(zone->pageset, cpu)); mutex_unlock(&pcp_batch_high_lock); } -#endif void zone_pcp_reset(struct zone *zone) {