From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7351B3BE646 for ; Mon, 3 Aug 2026 09:32:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785749560; cv=none; b=K5AHZDnpmdfR42MZxoAjRFI//1MqWyxqPxgOirQtJff5c7q2mLsWifEM9l1WJlrDW1m/NR5XSnWai+aFoZU439qS7kgTwiOPNx9hAJkJhNz031E4IHqpoMaRmjID7c9vy6DTPnYtZ6w6tIadTnm+IxFEN0WxltJ+AgColTH0h+U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785749560; c=relaxed/simple; bh=mqQuy3q9JUneaAVS2bmjnxC1BEcebAIteTjwgmSB5kA=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=hiY1vuhH68o2S246XroKNqA4DVjefOPs8KarOqsczoQcBAbHvO864RA7QJnN4rDuvgfCbZhJgxj3ifFe4pgMSiPbZ34wYnZ2oGsb4KvTOlxL1hCphnQdtn9SPGsgdAmdrt0FEbyjXRkgx6N8NA0QXSf0i+DktrPtxskL2E8PO+U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=BcKJhhXR; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="BcKJhhXR" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 834281F000E9; Mon, 3 Aug 2026 09:32:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1785749551; bh=tV++lx5wKqCLqTJkSKjN0rIr4B0HTe85fHGLY9zxVMQ=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=BcKJhhXRkiRbXC2AN5t9Z7i08hpKfJ5oidgPQpSKJtvyeNJ72f8EcgJaFO1j8zNwX Txx0uWuhckidz+69oyvI+5Q4gIn0MUcuD25eCNFxJhTsPySR5o9z85BubiJujY3Bbp MSHK8dvgri/+2FCewZK56HAI4qA5VW8EwByNSIid/uLwC6EbWRrtygckVww8FGyD0d 0cuKb4B68lXnGkLMledMj0J3Zd3IlFsBHjueGWxjg4iUH0um8JYjRyEAaHpGxlF0pS MlABDvPHsMP00IH4vr2PojwL3Y14mA+tM9F4NQQjb0hun6IRsY9hkNnuY8VP+Gzvnr aeKgffwvHzjgA== Message-ID: <9a820779-606b-4a67-affc-5fdb85a00289@kernel.org> Date: Mon, 3 Aug 2026 11:32:25 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 23/26] mm: Split out NR_FREE_PAGES_BLOCKS_[UN]MAPPED Content-Language: en-US To: Brendan Jackman , Borislav Petkov , Dave Hansen , Peter Zijlstra , Andrew Morton , David Hildenbrand , Mike Rapoport , Wei Xu , Johannes Weiner , Zi Yan , Lorenzo Stoakes Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, x86@kernel.org, Sumit Garg , Will Deacon , rientjes@google.com, "Kalyazin, Nikita" , patrick.roy@linux.dev, "Itazuri, Takahiro" , Andy Lutomirski , David Kaplan , Thomas Gleixner , Yosry Ahmed , Patrick Bellasi , Reiji Watanabe , Sean Christopherson References: <20260726-page_alloc-unmapped-v3-0-6f5729aa9832@google.com> <20260726-page_alloc-unmapped-v3-23-6f5729aa9832@google.com> From: "Vlastimil Babka (SUSE)" Autocrypt: addr=vbabka@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 7/27/26 00:22, Brendan Jackman wrote: > In order to infer whether compaction is likely to enable an allocation > that maps/unmaps a pageblock, we need to know how many fully-free > pageblocks of each type there are. > > Signed-off-by: Brendan Jackman Reviewed-by: Vlastimil Babka (SUSE)