On Thu, Mar 10, 2022 at 09:24:56AM +0000, Mel Gorman wrote:
Eric Dumazet pointed out that commit 44042b449872 ("mm/page_alloc: allow
high-order pages to be stored on the per-cpu lists") only checks the head
page during PCP refill and allocation operations. This was an oversight
and all pages should be checked. This will incur a small performance
penalty but it's necessary for correctness.
Fixes: 44042b449872 ("mm/page_alloc: allow high-order pages to be stored
on the per-cpu lists")
Reported-by: Eric Dumazet <edumazet@xxxxxxxxxx>
Signed-off-by: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Acked-by: Eric Dumazet <edumazet@xxxxxxxxxx>
Reviewed-by: Shakeel Butt <shakeelb@xxxxxxxxxx>
