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h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=Nm4m9ZtNNzNVzf1kokB7yNbzF9UVHGgEglk4/GB85xNC97ILhtOua7pOLcfaAq4fW Weg8dcT51Aw9QvSTkZlwTT0WZh/h79+rLKSNtETpTAfHJKn36pwk5bxOo9lFxSwQ+e QqxgpKovMCYiFB9m3LrmJ/ZWXsdZeeU8wRk+qBkg= Date: Sun, 15 Dec 2024 22:10:15 -0800 From: Andrew Morton To: Qi Zheng Cc: Yu Zhao , peterz@infradead.org, tglx@linutronix.de, david@redhat.com, jannh@google.com, hughd@google.com, willy@infradead.org, muchun.song@linux.dev, vbabka@kernel.org, lorenzo.stoakes@oracle.com, rientjes@google.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 01/12] Revert "mm: pgtable: make ptlock be freed by RCU" Message-Id: <20241215221015.a567dbf38c9a98d672aecd3e@linux-foundation.org> In-Reply-To: <18bc52f4-ab02-495f-8f8f-87f69ea5b914@bytedance.com> References: <1fdb3ee32e6958ad82229941b2213ef76b7c4705.1734164094.git.zhengqi.arch@bytedance.com> <18bc52f4-ab02-495f-8f8f-87f69ea5b914@bytedance.com> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: E545E1A0015 X-Stat-Signature: mad96fc1187134cgg87pc854yrjsbgqt X-Rspam-User: X-Rspamd-Server: rspam09 X-HE-Tag: 1734329386-279884 X-HE-Meta: U2FsdGVkX18CpIwI0sW0yGu+FdUAPD3AAVDZzU46Uoro7Y0r6zSLdQLS2fmPfuNokf8wuW17BeyiIbsyOh6kWrCOM43d+vmQ8JgITDnL1Zmef1VhxSfbzQfl9sNdiSOezOlEalNYUwx/VyV6LH4RP79oER+HwD7uo1yIkdwH185qe9NznXdDboTqJZOIh1Bd2SVcYQoBB4Lw0HQnfTpZpOeFNMP9CLG4SczuEAz3+7Mr8iKLuDUY6yH7cJQrcdKo1NPPWdtZfmiPvIEu8sFub7T9arBIUzA6HN2rjOJCmBvIx7+7eKMTPStlb7mXez2QlV6YPr1GegJAId4ofwRUwBEpgORSFfa0ymMVe/ukkHY930c9dEbQ6javKAi6doWeFXqSVnr3xui+HgCKN7XfXbONFCyMzlLljkyOymiUDc45lI0tA+Ua5EUcxyyDVytGLKlJjMGWcK9yVR64kDwJ/HfUzCnQH2S8RiCk/6a+0F0j6bCO8/Cicfapum1hNwmjz5QAXpIXWYubU2twU/tP3GjBFSPt0p2CzFdvCC4Mfs3ZPQfnJsNEq/uV2csRNJgl/RcHvFkLUA77ROng2bfhMFwzvvX3bScT3Put9SgXjItBYoRoVhvI0TSCaCrk4OGLNr5VSCVgOJcJUOPfs5GXPUfC0pjxf90RJ5e1to37/YIw5JyE6/MUpeu3wMF8fhnauEY7PHuJdq1V2NG+fDITnnzRLExhPCfkafPHrETB3C7zGjEDrQPBuYVaQ3d99Ya8CbXX3KNhXpPvu2tNWcKbnkcTvgXCy6Ke20kh9zONz60+5x+tVl1ZeFZm/pWMFpqQrVN2GiKZGpWRvx2v6hgGgCoxIq14epcnDoy8qvCpZme8I4AimZGcItFDQmjB7yba74xK+TIh12Ny6wHJZqYs9pWwSWS8msnIwrXn5CsfQa+apbgrrJ1vLUtq+t7yVEYsZqSCkKQhTHMdqZ0ciU9 dva0azcu aKiPgbXEfcVKZGmK509i85K8SexLbPFTaya7unet/Jqcmp4OPmeexTI+OFFWd93tpPWiSJr19FpLhXvFKIbC1HpggZOubEbVk9xEWOTidIjZ71sXqtelVUVEenRNceB9ajrK8xsWwKFUoktU50gw69FF4CdQdthHePsnWcYBg1dTUpQRIYBtByupvs2TAV+WQELrKV759q/6PzvL0tpr3kFMTq5cE3rebVNjAQFBRO8IGVF4pHzYbY45/pix0izI9Hh3z4YVc1EA0l7hWumB/VqGK++S8YlWfc1Y9rSPmiOROTMI= 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 Sun, 15 Dec 2024 14:29:38 +0800 Qi Zheng wrote: > > > > Acked-by: Yu Zhao > > Thanks! Once the review of this patch series is completed, we can simply > drop "mm: pgtable: make ptlock be freed by RCU" from mm tree. Can we drop it now and does the remainder of the series "synchronously scan and reclaim empty user PTE pages v4" remain valid and useful?