Re: [Patch v2] mm: thp: grab the lock before manipulation defer list

Kirill A. Shutemov
2020-01-13T07:36:14Z

On Mon, Jan 13, 2020 at 08:44:57AM +0800, Wei Yang wrote:
> >> It is possible two page in the same pgdate or memcg grab page lock
> >> respectively and then access the same defer queue concurrently.
>
> If my understanding is correct, you agree with my statement?

Which one? If the one above then no. list_empty only accesses list_head
for the struct page, not the queue.

--
Kirill A. Shutemov