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bh=VveMurHOJU9S2HtA9hWON2oKMH+ld622SBYIaqtFlEg=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=XMrbGfx2Ajn96a5LygNk39LLgZJpMSwf5tV3wvVdYISmLVXTG9XHflSkKi9aT7RUE J81ELaCUehXgtB4RjpyxVqgkjaeUxtcecooh/ux1IBNqM7T72MdcmI4uuLhFy2jc6h 3tmWO5eDMBPVRQwSOCy4SMeQ21QsQEtRzmPRAElM= Date: Wed, 28 Dec 2022 15:33:36 -0800 From: Andrew Morton To: Yin Fengwei Cc: riel@surriel.com, nathan@kernel.org, shy828301@gmail.com, willy@infradead.org, kirill.shutemov@intel.com, ying.huang@intel.com, feng.tang@intel.com, zhengjun.xing@linux.intel.com, linux-mm@kvack.org Subject: Re: [RFC PATCH] mm/thp: check and bail out if page in deferred queue already Message-Id: <20221228153336.73381b85d4dbd056645b94e1@linux-foundation.org> In-Reply-To: <20221223135207.2275317-1-fengwei.yin@intel.com> References: <20221223135207.2275317-1-fengwei.yin@intel.com> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.33; x86_64-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: C30B98000D X-Stat-Signature: su31awdm3efbx3mpscteqshxr79pffuf X-Rspam-User: X-Rspamd-Server: rspam08 X-HE-Tag: 1672270419-489261 X-HE-Meta: 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 wwppgaWD Z4SBx6V2YlXUCCnThzfJVYf5GvZbHJz7TFYEsHHJfp6bXJVS82dj1EzyuADafxwudENIzMj0PhKMVxaw= 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: On Fri, 23 Dec 2022 21:52:07 +0800 Yin Fengwei wrote: > Kernel build regression with LLVM was reported here: > https://lore.kernel.org/all/Y1GCYXGtEVZbcv%2F5@dev-arch.thelio-3990X/ > with commit f35b5d7d676e ("mm: align larger anonymous mappings on THP > boundaries"). And the commit f35b5d7d676e was reverted. > > It turned out the regression is related with madvise(MADV_DONTNEED) > was used by ld.lld. Are we able to identify a Fixes: target for this? Thanks.