Re: [Patch v2] mm: thp: grab the lock before manipulation defer list
From: Wei Yang <hidden>
Date: 2020-01-13 08:23:19
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linux-mm, lkml
On Mon, Jan 13, 2020 at 10:36:14AM +0300, Kirill A. Shutemov wrote:
On Mon, Jan 13, 2020 at 08:44:57AM +0800, Wei Yang wrote:quoted
quoted
quoted
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.
Ah, I get your point.
-- Kirill A. Shutemov
-- Wei Yang Help you, Help me