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From: Muchun Song In-Reply-To: <63f0b3d2f9124ae5076963fb5505bd36daba0393.1706774109.git.zhengqi.arch@bytedance.com> Date: Fri, 2 Feb 2024 11:16:02 +0800 Cc: Andrew Morton , Arnd Bergmann , david@redhat.com, willy@infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org Content-Transfer-Encoding: 7bit Message-Id: <996AA3FE-47DD-408E-960C-EB805DBE8EFE@linux.dev> References: <63f0b3d2f9124ae5076963fb5505bd36daba0393.1706774109.git.zhengqi.arch@bytedance.com> To: Qi Zheng X-Migadu-Flow: FLOW_OUT X-Rspamd-Queue-Id: E555E18000A X-Rspam-User: X-Rspamd-Server: rspam02 X-Stat-Signature: nt4qjtm1za7139bazwrbcxzbczn79514 X-HE-Tag: 1706843803-487179 X-HE-Meta: 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 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 Feb 1, 2024, at 16:05, Qi Zheng wrote: > > For kernel PMD entry, we use init_mm.page_table_lock to protect it, so > there is no need to allocate and initialize the split ptlock for kernel > PMD page. > > Signed-off-by: Qi Zheng Reviewed-by: Muchun Song Thanks.