From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) (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 387A61FCF41; Tue, 24 Mar 2026 14:40:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.176.79.56 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774363213; cv=none; b=QwWlG3ZiFfyr83b0ClrbpCmipqDZ8anYv+FvybrNpiAxLKK+WlbQJnd2t7re7A5bn8n0Nw7U7OP5SOdolFAIovZVvSaVZw/8xuu2COcagoGS9LAmMOBvprWv5//MU/yeFSQkhkm3kJc5rc+Prr5g46R8701AuJtgzaDLsFdcYys= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774363213; c=relaxed/simple; bh=kJeWdXMj7tZW6J+YCid8ydsiLMzQ3sRRK7+OFImc85g=; h=Date:From:To:CC:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=r//nps5/+SqiJ1CSCUNwcwrrTv21NIU+U02oZNC7A74IUlypgXJ5H+o1TZSwxqx5IvU/oEjfzM8nvaBlfD+uzpAphKyS836lFta+mHnULfTM9lOwT5kU4tlVbeiqkXMDEuOg+s9GkP6AbfaBjgSXANmLdlvmT67rTflGo8FtCes= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=185.176.79.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.18.224.107]) by frasgout.his.huawei.com (SkyGuard) with ESMTPS id 4fgCNl6T19zHnGcc; Tue, 24 Mar 2026 22:39:35 +0800 (CST) Received: from dubpeml500005.china.huawei.com (unknown [7.214.145.207]) by mail.maildlp.com (Postfix) with ESMTPS id 697A040589; Tue, 24 Mar 2026 22:40:09 +0800 (CST) Received: from localhost (10.203.177.15) by dubpeml500005.china.huawei.com (7.214.145.207) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Tue, 24 Mar 2026 14:40:07 +0000 Date: Tue, 24 Mar 2026 14:40:06 +0000 From: Jonathan Cameron To: John Groves CC: John Groves , Miklos Szeredi , "Dan Williams" , Bernd Schubert , Alison Schofield , John Groves , Jonathan Corbet , Shuah Khan , Vishal Verma , "Dave Jiang" , Matthew Wilcox , "Jan Kara" , Alexander Viro , "David Hildenbrand" , Christian Brauner , "Darrick J . Wong" , Randy Dunlap , Jeff Layton , Amir Goldstein , Stefan Hajnoczi , Joanne Koong , Josef Bacik , Bagas Sanjaya , Chen Linxuan , "James Morse" , Fuad Tabba , "Sean Christopherson" , Shivank Garg , Ackerley Tng , Gregory Price , Aravind Ramesh , Ajay Joshi , "venkataravis@micron.com" , "linux-doc@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "nvdimm@lists.linux.dev" , "linux-cxl@vger.kernel.org" , "linux-fsdevel@vger.kernel.org" , Ira Weiny Subject: Re: [PATCH V9 4/8] dax: Save the kva from memremap Message-ID: <20260324144006.00007cff@huawei.com> In-Reply-To: <0100019d1d47a813-6b74d7e9-5171-4382-bfa5-67bf9667c62a-000000@email.amazonses.com> References: <0100019d1d463523-617e8165-a084-4d91-aa5e-13778264d5d4-000000@email.amazonses.com> <20260324003833.5027-1-john@jagalactic.com> <0100019d1d47a813-6b74d7e9-5171-4382-bfa5-67bf9667c62a-000000@email.amazonses.com> X-Mailer: Claws Mail 4.3.0 (GTK 3.24.42; x86_64-w64-mingw32) Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: lhrpeml100012.china.huawei.com (7.191.174.184) To dubpeml500005.china.huawei.com (7.214.145.207) On Tue, 24 Mar 2026 00:38:48 +0000 John Groves wrote: > From: John Groves > > Save the kva from memremap because we need it for iomap rw support. > > Prior to famfs, there were no iomap users of /dev/dax - so the virtual > address from memremap was not needed. > > Reviewed-by: Ira Weiny > Reviewed-by: Dave Jiang > Signed-off-by: John Groves Reviewed-by: Jonathan Cameron