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Subject: Re: [PATCH v6 03/11] device-dax/kmem: move resource tracking to
 drvdata
To:     Dan Williams <dan.j.williams@intel.com>, akpm@linux-foundation.org
Cc:     Vishal Verma <vishal.l.verma@intel.com>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        Pavel Tatashin <pasha.tatashin@soleen.com>,
        Brice Goglin <Brice.Goglin@inria.fr>,
        Dave Jiang <dave.jiang@intel.com>,
        Ira Weiny <ira.weiny@intel.com>, Jia He <justin.he@arm.com>,
        Joao Martins <joao.m.martins@oracle.com>,
        Jonathan Cameron <Jonathan.Cameron@huawei.com>,
        linux-mm@kvack.org, linux-kernel@vger.kernel.org,
        linux-nvdimm@lists.01.org
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From:   David Hildenbrand <david@redhat.com>
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Date:   Tue, 6 Oct 2020 10:14:07 +0200
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Precedence: bulk

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 <david@redhat.com>
> Cc: Vishal Verma <vishal.l.verma@intel.com>
> Cc: Dave Hansen <dave.hansen@linux.intel.com>
> Cc: Pavel Tatashin <pasha.tatashin@soleen.com>
> Cc: Brice Goglin <Brice.Goglin@inria.fr>
> Cc: Dave Jiang <dave.jiang@intel.com>
> Cc: David Hildenbrand <david@redhat.com>
> Cc: Ira Weiny <ira.weiny@intel.com>
> Cc: Jia He <justin.he@arm.com>
> Cc: Joao Martins <joao.m.martins@oracle.com>
> Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com>
> Signed-off-by: Dan Williams <dan.j.williams@intel.com>

Reviewed-by: David Hildenbrand <david@redhat.com>

Thanks!


-- 
Thanks,

David / dhildenb