On Thu, Sep 08, 2022 at 11:55:33AM +0800, Liu Shixin wrote: > If two or more threads call get_huge_zero_page concurrently, > THP_ZERO_PAGE_ALLOC may increased two or more times. But actually, > this should only count as once since the extra zero pages has been > freed. Redefine its meaning to indicate the times a huge zero page > used for thp is successfully allocated. I don't particularly care, but it is not obvoius why the new behaviour is better. All huge zero pages are freed apart from possibly the last one allocated. -- Kiryl Shutsemau / Kirill A. Shutemov
