From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 CA7A73A9D9D; Fri, 27 Mar 2026 10:09:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774606142; cv=none; b=hrpTCws7v7MVfvbBGqzv2aENGoJjoFydbvfEb14N80lvKd2jm2BKAmmLlcaDVsOtsJnWySoVjL65/g9WRCwX3RnOhUCiZTDvChHq5jrM8RrhN/aTNysbid9lTMtGq/2HAVzhUCKOR+vDNGCHKYfrA5UtwHrb9+I64lWLvj9j4So= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774606142; c=relaxed/simple; bh=XJl6davOB1UKhtP/CmtPqusFwBx0yuKoqZmBfBuhfho=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=tp7bO58TcS+zPag2W+cUfqiDtlX4Nb0zp/o04hjOcTmVLRcd6ZK1p4XKODSPKrd2tFQxSiwjPE7zTer4TEZlhJ4dyo+YZICyP+6L0OQRyd8aSIOBlv27sKNI9+cHtKmkbWlW95k9R+5mZGFEcpi9Ld8pn1mjcIjHktQMoazGJ6Y= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=FRO9T+jE; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="FRO9T+jE" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C7A77C19423; Fri, 27 Mar 2026 10:08:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1774606142; bh=XJl6davOB1UKhtP/CmtPqusFwBx0yuKoqZmBfBuhfho=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=FRO9T+jEUqFsA/stouSLI3/Ptj9m3UtKoM1ZkGEjDy0YQJS1cweK3u/ksADPcTTgI ZBvu5onbBsUmgErPC17EUpdVIjCY9XSDcYYt/GSqSDSPTKEMQDtsbbXvdo3HYgQvnx ZIqdPZ/OfiVcGLoO4dzECYvpqjOyVKwgGaWq81oR4tpPkF88DCs5sVxbnRqMO7y7ql 7pcG5qYPAd5oJub4rp3Ze5Ua4q48p3xU85EmZudCWtJbk70Ew9bDrRZywDfIFf5VtU NDw+jqj9WjzJZRBSZEATBisszom5IiFGJyS8Q07UvOz06UqUNllZTUBSGXYv7/34Hj BAcvWqqFyEclw== Message-ID: <7d6b4401-e230-4ca7-b64f-c1277fa643b8@kernel.org> Date: Fri, 27 Mar 2026 11:08:57 +0100 Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] selftests/mm: Fix soft-dirty kselftest supported check To: Audra Mitchell , Andrew Morton Cc: ljs@kernel.org, Liam.Howlett@oracle.com, vbabka@kernel.org, rppt@kernel.org, surenb@google.com, mhocko@suse.com, shuah@kernel.org, usama.anjum@collabora.com, colin.i.king@gmail.com, avagin@google.com, linux-kselftest@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org References: <20260320184010.759461-1-audra@redhat.com> <20260320184010.759461-2-audra@redhat.com> <20260324162324.6efa49422d145afd4dd37dda@linux-foundation.org> <20260324162445.fb353f4d2c85d89bc25be03a@linux-foundation.org> 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 3/25/26 17:23, Audra Mitchell wrote: > On Tue, Mar 24, 2026 at 04:24:45PM -0700, Andrew Morton wrote: >> On Tue, 24 Mar 2026 16:23:24 -0700 Andrew Morton wrote: >> >>> > > Wouldn't it be prudent to also update __pagemap_scan_get_categories > return type to a long? Right now its uint64_t, but we expect a long > to be returned from the ioctl: > > static long do_pagemap_cmd(struct file *file, unsigned int cmd, > unsigned long arg) > > I've made the other changes, but I'll wait to push the next version after > this feedback. Thanks! Yes, definitely. I was under the impression that __pagemap_scan_get_categories() could actually return some kind of a mask that would warrant the uint64_t. But we really just return the result from the ioctl(). And ioctl() is defined to return an int. So you could just return an int there. -- Cheers, David