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Tue, 06 Oct 2020 04:14:14 -0400 X-MC-Unique: OAndu4Q0Nwam07G_XTQKqg-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id DC49618C5201; Tue, 6 Oct 2020 08:14:11 +0000 (UTC) Received: from [10.36.114.219] (ovpn-114-219.ams2.redhat.com [10.36.114.219]) by smtp.corp.redhat.com (Postfix) with ESMTP id 703E99CBA; Tue, 6 Oct 2020 08:14:08 +0000 (UTC) Subject: Re: [PATCH v6 03/11] device-dax/kmem: move resource tracking to drvdata To: Dan Williams , akpm@linux-foundation.org Cc: Vishal Verma , Dave Hansen , Pavel Tatashin , Brice Goglin , Dave Jiang , Ira Weiny , Jia He , Joao Martins , Jonathan Cameron , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-nvdimm@lists.01.org References: <160196728453.2166475.12832711415715687418.stgit@dwillia2-desk3.amr.corp.intel.com> <160196730203.2166475.10332959995680506711.stgit@dwillia2-desk3.amr.corp.intel.com> From: David Hildenbrand Autocrypt: addr=david@redhat.com; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0 MIME-Version: 1.0 In-Reply-To: <160196730203.2166475.10332959995680506711.stgit@dwillia2-desk3.amr.corp.intel.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 06.10.20 08:55, Dan Williams wrote: > Towards removing the mode specific @dax_kmem_res attribute from the > generic 'struct dev_dax', and preparing for multi-range support, move > resource tracking to driver data. The memory for the resource name > needs to have its own lifetime separate from the device bind lifetime > for cases where the driver is unbound, but the kmem range could not be > unplugged from the page allocator. > > The resource reservation also needs to be released manually via > release_resource() given the awkward manipulation of the > IORESOURCE_BUSY flag. > > Cc: David Hildenbrand > Cc: Vishal Verma > Cc: Dave Hansen > Cc: Pavel Tatashin > Cc: Brice Goglin > Cc: Dave Jiang > Cc: David Hildenbrand > Cc: Ira Weiny > Cc: Jia He > Cc: Joao Martins > Cc: Jonathan Cameron > Signed-off-by: Dan Williams Reviewed-by: David Hildenbrand Thanks! -- Thanks, David / dhildenb