Re: [PATCH 09/11] mm/page_alloc: Avoid conflating IRQs disabled with zone->lock

On Thu, Apr 15, 2021 at 02:25:36PM +0200, Vlastimil Babka wrote: > > @@ -3294,6 +3295,7 @@ void free_unref_page_list(struct list_head *list) > > struct page *page, *next; > > unsigned long flags, pfn; > > int batch_count = 0; > > + int migratetype; > > > > /* Prepare pages for

Re: [PATCH 09/11] mm/page_alloc: Avoid conflating IRQs disabled with zone->lock

On 4/14/21 3:39 PM, Mel Gorman wrote: > Historically when freeing pages, free_one_page() assumed that callers > had IRQs disabled and the zone->lock could be acquired with spin_lock(). > This confuses the scope of what local_lock_irq is protecting and what > zone->lock is protecting in

[PATCH 09/11] mm/page_alloc: Avoid conflating IRQs disabled with zone->lock

Historically when freeing pages, free_one_page() assumed that callers had IRQs disabled and the zone->lock could be acquired with spin_lock(). This confuses the scope of what local_lock_irq is protecting and what zone->lock is protecting in free_unref_page_list in particular. This patch uses