mm: handle multiple owners of device private pages in migrate_vma
Add a new src_owner field to struct migrate_vma. If the field is set, only device private pages with page->pgmap->owner equal to that field are migrated. If the field is not set only "normal" pages are migrated. Fixes: df6ad698 ("mm/device-public-memory: device memory cache coherent with CPU") Link: https://lore.kernel.org/r/20200316193216.920734-3-hch@lst.de Signed-off-by:Christoph Hellwig <hch@lst.de> Reviewed-by:
Ralph Campbell <rcampbell@nvidia.com> Tested-by:
Bharata B Rao <bharata@linux.ibm.com> Signed-off-by:
Jason Gunthorpe <jgg@mellanox.com>
parent
f894ddd5
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