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SubjectRe: [PATCH 1/2] mm, page_isolation: remove bogus tests for isolated pages
On Wed, 22 Jul 2015, Vlastimil Babka wrote:

> From: Vlastimil Babka <vbabka@suse.cz>
> Date: Wed, 22 Jul 2015 14:16:52 +0200
> Subject: [PATCH 2/3] fixup! mm, page_isolation: remove bogus tests for
> isolated pages
>
> ---
> mm/page_alloc.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index 41dc650..c61fef8 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -789,7 +789,11 @@ static void free_pcppages_bulk(struct zone *zone, int count,
> page = list_entry(list->prev, struct page, lru);
> /* must delete as __free_one_page list manipulates */
> list_del(&page->lru);
> +
> mt = get_freepage_migratetype(page);
> + /* MIGRATE_ISOLATE page should not go to pcplists */
> + VM_BUG_ON_PAGE(is_migrate_isolate(mt), page);
> + /* Pageblock could have been isolated meanwhile */
> if (unlikely(has_isolate_pageblock(zone)))
> mt = get_pageblock_migratetype(page);
>

Looks good, thanks!


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