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Fri, 16 Aug 2024 13:32:52 +0800 Message-ID: <1c07b6f5-c0ae-4213-8c86-e49ff06bd45a@linux.alibaba.com> Date: Fri, 16 Aug 2024 13:32:50 +0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] mm/migrate: fix deadlock in migrate_pages_batch() on large folios To: Andrew Morton Cc: "Huang, Ying" , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Gao Xiang References: <20240728154913.4023977-1-hsiangkao@linux.alibaba.com> <87plqx0yh2.fsf@yhuang6-desk2.ccr.corp.intel.com> <20240815220224.d7970835d5c12b4833bd04dc@linux-foundation.org> <20240815222504.85e94e909d28bc64bc89b847@linux-foundation.org> From: Gao Xiang In-Reply-To: <20240815222504.85e94e909d28bc64bc89b847@linux-foundation.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: BDAAF40013 X-Stat-Signature: 61tt3bxpemnn5uiw3r86hweqgfn3sa9w X-Rspam-User: X-HE-Tag: 1723786377-751771 X-HE-Meta: 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 FmEA051K QaG6e8HpjiDXJU/IlzrcZWrkbv1w3V4fucjoOVbyz+OyUVoScFvq6+fWq63VbZa4hoItFbCgA+A28RxhSZP9ybDBOaP+/iWw40k/F6MpIXWNmZmuM0deMLJxvCU3t7OtVZKzCD6qL6ZiTpq5je5sDKz8MNxI30X6mS1QMUbpMtIxBbjwB7i7lOzdLVy1oGuVTf2WrSU7AFfSt0vZwG/8s80upesR1kHK+1SBeOx/iJku+CP0NYeDAvjbUEw0uVpKU+Z8SSXqH/jBqnY/O8TA8vNUeBSKOVO9+jlAB/iXuxVj+wuN+bpIpi96kFKVA30Xjp9JEAXoyBkQnqDpy5iQ0VuApWmyGyuvrrxKQKtBKflmnCObn/3TU2w5RVMbj67r6ALCfrrr/rvZ22P/u78yjxtBzCw== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, 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 2024/8/16 13:25, Andrew Morton wrote: > On Fri, 16 Aug 2024 13:17:04 +0800 Gao Xiang wrote: > >>>> does someone want to take a look at developing a v2? >>> >>> I've replied your email last week, I'm not sure why it has not >>> been addressed? >>> >>> https://lore.kernel.org/linux-mm/20240729021306.398286-1-hsiangkao@linux.alibaba.com/ >>> >>> The patch in your queue is already v2? No? >> >> Really confused about this, since the comment above was about v1. >> and v2 is already sent (in July 29) and in -next for two weeks >> with >> >> Reviewed-by: "Huang, Ying" >> Acked-by: David Hildenbrand >> >> What else I need to do to resolve this already resolved comment >> so that I could enable large folios without deadlocks anymore? > > Is cool, thanks - I failed to correctly update my notes-to-self. Many thanks for confirmation and hopefully it could upstream so I could enable large folios safely. Thanks, Gao Xiang