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[209.85.219.52]) by smtp.gmail.com with ESMTPSA id x1-20020a05620a448100b006ee7e223bb8sm11511411qkp.39.2022.11.29.11.23.46 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 29 Nov 2022 11:23:46 -0800 (PST) Received: by mail-qv1-f52.google.com with SMTP id i12so10444716qvs.2 for ; Tue, 29 Nov 2022 11:23:46 -0800 (PST) X-Received: by 2002:a0c:80e6:0:b0:4c7:1ae2:2787 with SMTP id 93-20020a0c80e6000000b004c71ae22787mr1804495qvb.89.1669749826624; Tue, 29 Nov 2022 11:23:46 -0800 (PST) MIME-Version: 1.0 References: <20221123181838.1373440-1-hannes@cmpxchg.org> <16dd09c-bb6c-6058-2b3-7559b5aefe9@google.com> In-Reply-To: From: Linus Torvalds Date: Tue, 29 Nov 2022 11:23:30 -0800 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH] mm: remove lock_page_memcg() from rmap To: Johannes Weiner Cc: Hugh Dickins , Andrew Morton , Shakeel Butt , Michal Hocko , Stephen Rothwell , linux-mm@kvack.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1669749828; a=rsa-sha256; cv=none; b=BKtUbNMAZxIxA1ljUIHrdKtr3BeETqARiofCs8de/rzWuKbbONHT1RgD51daTHeWtZKDER b+f4OuExE3P7dfgUWrrbbWVKZGWaFYp/2mSTua3krGROHY1cn052lQSDe0vqaxmZPmAH+T SQ8hd1Yud+JwRg61N4dEJkpZm3GC7r0= ARC-Authentication-Results: i=1; imf02.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=google header.b=MRtFC7hP; spf=pass (imf02.hostedemail.com: domain of torvalds@linuxfoundation.org designates 209.85.160.182 as permitted sender) smtp.mailfrom=torvalds@linuxfoundation.org; dmarc=none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1669749828; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=n82HVyeen1bMmFClFboMPGWDCdQZFtBvU3cG7O5fWI8=; b=upNY5/XozVo0JjSCsmsfnlS+LYpJMFD+KizNq2JkxN/5p1flvxWRKfHq17V8UolpCzRYP3 fUqNW2d35XW3Ow697TGtO0j1vsxBa3usDSyYkmutXHkUH6Nn9ebZ2HJ1J/58N8lVLMXSrI NTXe7UfAKqGVZVpMvc2Vq/xCcarUHUM= X-Stat-Signature: fzyr3wfuapy6bgdofamet6km1kg5giac Authentication-Results: imf02.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=google header.b=MRtFC7hP; spf=pass (imf02.hostedemail.com: domain of torvalds@linuxfoundation.org designates 209.85.160.182 as permitted sender) smtp.mailfrom=torvalds@linuxfoundation.org; dmarc=none X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: 953EB80012 X-Rspam-User: X-HE-Tag: 1669749828-376914 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 Tue, Nov 29, 2022 at 11:08 AM Johannes Weiner wrote: > > We can try limiting move candidates to present ptes. But maybe it's > indeed time to deprecate the legacy charge moving altogether, and get > rid of the entire complication. Please. If that's what it takes.. Linus