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[49.181.56.237]) by smtp.gmail.com with ESMTPSA id w3-20020a170902904300b001e2bbc0a672sm6595737plz.188.2024.04.14.17.09.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 14 Apr 2024 17:09:09 -0700 (PDT) Received: from dave by dread.disaster.area with local (Exim 4.96) (envelope-from ) id 1rw9uE-00FqsV-1n; Mon, 15 Apr 2024 10:09:06 +1000 Date: Mon, 15 Apr 2024 10:09:06 +1000 From: Dave Chinner To: Zhaoyang Huang Cc: Andrew Morton , "zhaoyang.huang" , Alex Shi , "Kirill A . Shutemov" , Hugh Dickins , Baolin Wang , linux-mm@kvack.org, linux-kernel@vger.kernel.org, steve.kang@unisoc.com Subject: Re: [PATCH 1/1] mm: protect xa split stuff under lruvec->lru_lock during migration Message-ID: References: <20240412064353.133497-1-zhaoyang.huang@unisoc.com> <20240412143457.5c6c0ae8f6df0f647d7cf0be@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Queue-Id: DC2B718000D X-Rspam-User: X-Rspamd-Server: rspam11 X-Stat-Signature: mqce6wn44mu51due6m17eu45kiwc9mwe X-HE-Tag: 1713139750-779834 X-HE-Meta: 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 Vj69K/GI 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000149, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Sat, Apr 13, 2024 at 10:01:27AM +0800, Zhaoyang Huang wrote: > loop Dave, since he has ever helped set up an reproducer in > https://lore.kernel.org/linux-mm/20221101071721.GV2703033@dread.disaster.area/ > @Dave Chinner , I would like to ask for your kindly help on if you can > verify this patch on your environment if convenient. Thanks a lot. I don't have the test environment from 18 months ago available any more. Also, I haven't seen this problem since that specific test environment tripped over the issue. Hence I don't have any way of confirming that the problem is fixed, either, because first I'd have to reproduce it... -Dave. -- Dave Chinner david@fromorbit.com