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 3E5D739E9AD; Tue, 8 Sep 2026 07:39:28 +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=1788853169; cv=none; b=argRcZagkwW6GMh5uRGcVkbr3v0hSK4wX6mKEj+XAejfw2zsVpfvexDShTMOPcOALm2bW6zJi7QkwXvWfTt0ECJ3l91u3bqDwKx+rwIvH2lM1crwgCR5Hxt7EFgvFQ9O68RpWXeKZd2JXLiTrAo8lfAi7iE24YB4z4Z3z2VTztk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788853169; c=relaxed/simple; bh=7QU794v1U9sZCZrPnzxKNMg96glxB5IOqEz+ncRkYPI=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=rgQNLmLaUxvjNUt9txEomYAWCzzYCs2fgWP/cjeLCST1ahqMmCNkQ9+KItUCbqaITGGepyYTCkX4ohr+F2kE7KhoDwkx+GaaTJZ7xjLX2VTR869MyrJkYSFH3ZF9rriCgFUHy6HzfVDmeM8EKb4Ea5M5N77XAcmfNR1kZ2ii/bI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=CcqVrOJw; 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="CcqVrOJw" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2D0E41F00A3D; Tue, 8 Sep 2026 07:39:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788853168; bh=QLYb28voNqE4LZdiHYauAGa0BtX5Z8T2H9rGHNsNa40=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=CcqVrOJwmC9ha+LcDD2dDASPvYOWg5geyouYwMQX3Q/sTX746nqOoFdAceSS/yghh DBCsMjut7ZwO+//bB+iO7adgR1cwN4BghuSUMLzGzbYTHLoSVkWzQ/C0JVO4WoF6NL h3or8xnQrXhsWBMVY2XRUM3tDezZXeuFwuUmv40eSpyHIhoNkPR4MRDk0x/9ge1ZOw Jtm2T4FgjRNtZNIU43RH0w5BdisKGgBj37H1+KYJAeA4oPLaOkG4NPSGxlIIiyp+rf dAarE9cLDKzPX4cA7umL941lyFZn2AQ4HFO2giRaIPqHep2FRnsKupsT6I7OszAbYS YhG/541ohpjag== Message-ID: <36658bb7-a753-4711-8659-5bca04a5949f@kernel.org> Date: Tue, 8 Sep 2026 09:39:23 +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 v4 1/3] mm: khugepaged: fix swap entry value to folio_pfn() To: Vernon Yang Cc: akpm@linux-foundation.org, ljs@kernel.org, nico.pache@linux.dev, ryan.roberts@arm.com, dev.jain@arm.com, baohua@kernel.org, lance.yang@linux.dev, usama.arif@linux.dev, zokeefe@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, stable@vger.kernel.org, Vernon Yang References: <20260828055926.346744-1-vernon2gm@gmail.com> <20260828055926.346744-2-vernon2gm@gmail.com> <53f3afde-b5a7-4c2e-b6b5-8c844d1b6c8e@kernel.org> <047c287f-bb00-4672-9ab8-3323cbae8f2e@gmail.com> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit > > Yes, this is the approach Lorenzo[1] suggested in the previous version. > > [1] https://lore.kernel.org/linux-mm/ao6jVbVHLUmuY2UA@gremlin/ > >> When result == SCAN_SUCCEED, failed_pfn == -1 no? > > Your understanding is completely correct, and I explained at the time > that this was redundant. > Lorenzo said: "But it's not exactly a show stopper this :)", so I'd assume he'd be fine with a single trace statement. I'd say we keep it is simple as possible and use a single trace statement :) -- Cheers, David