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2019 Jun 13
1
[PATCH 04/22] mm: don't clear ->mapping in hmm_devmem_free
On Thu, Jun 13, 2019 at 11:43:07AM +0200, Christoph Hellwig wrote:
> ->mapping isn't even used by HMM users, and the field at the same offset
> in the zone_device part of the union is declared as pad. (Which btw is
> rather confusing, as DAX uses ->pgmap and ->mapping from two different
> sides of the union, but DAX doesn't use hmm_devmem_free).
>
>