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 8C60C3AA1BA for ; Wed, 8 Jul 2026 07:52:43 +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=1783497177; cv=none; b=MwH77JeCEFs0UzpGY+1D4W4vc5LqT9CufvsruIWKXBa9RwbGRT91GIVjV+WH6pEZyD7SzcTWhO0EjOgvUIzyMw8i8N9n6tAsH9jHq4FGkbQy24EMiCO3U2wpQN8ZQxyPkOFEvtSMIF9DWhMBbBJl6swsN6UxANaKBHuKraoqaek= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783497177; c=relaxed/simple; bh=2QY688GHb/pp9hydreWJCLTfnic/nBdsTCWq7dBOk7o=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=HbXayDNVF5C/hQw8CH6xGmBCkFzOC56ydI1xv2GrWHKLJzU/uY4kovc4yxe0XN91orf17YYLuhlos5Okv3C/DpR5YhkeN8yIXOfi/orjeMyvv+9rY1eakFkmV/34MJz7uhg4xB08+qp2TRisasp4gWS0e8RbZdtUgB2WJaUKvYY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=FnMLMPl+; 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="FnMLMPl+" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 77A7E1F000E9; Wed, 8 Jul 2026 07:52:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1783497161; bh=bWtEFlyIBpXMvKiDy1pvoBypm88zNYTkMdGjO/FtoKY=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=FnMLMPl+it7PS4Stb8ZECCtFTf5XbRZwfJtYsrRc7MXssz/cfKIqDNiEIQrRPMw+n oM0NmaftDSDUNHJ6JkTOlNLiJm0jVfyEaUx/0ViqTHJ7w5sbNxztzbhBDyWzgtfHIA mLOC+5nNOwAp25pb6cwkXnNRS4E87uWIbHNARD7v6j5mRu3hIEofBEObKyB2wjZUMN 1i3w5XgBcQlEKAe6AWxs6qtrrZhoDCZle3FXR2wkuQw+zn/dnIpsaMS0HAPHRb5vr5 1F/ZGYmhBJdh/N8/iW2bxz2zPA0ILyVcOMxshVcHNWR1FNhF/HJZT7gND8C18mdiLs IMuAVEAEwMW0g== Message-ID: Date: Wed, 8 Jul 2026 09:52:37 +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 RESEND 2/2] mm/ksm: Use precise linear_page_index instead of the whole address space To: xu.xin16@zte.com.cn, akpm@linux-foundation.org, chengming.zhou@linux.dev Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org References: <20260708122218298hWVcT2XtcT3UnK0QdTwuA@zte.com.cn> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 7/8/26 06:22, xu.xin16@zte.com.cn wrote: > From: xu xin > > Since an earlier commit introduced the linear_page_index to struct > ksm_rmap_item[1], allowing for optimizing the RMAP walk, we can use it > to locate more precisely all processes that hit the KSM page, which will > decrease a lot of unvalid iterations. It's awkward to reference a commit by a mailing list link. The other patch is not upstream yet. Best to wait for that to go in first, so you can properly reference the commit. -- Cheers, David