Messages in this thread | | | Date | Mon, 13 Jan 2020 10:36:14 +0300 | From | "Kirill A. Shutemov" <> | Subject | Re: [Patch v2] mm: thp: grab the lock before manipulation defer list |
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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
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