Christoph Hellwig 5cf4537975 dma-mapping: introduce a dma_common_find_pages helper ...

A helper to find the backing page array based on a virtual address.
This also ensures we do the same vm_flags check everywhere instead
of slightly different or missing ones in a few places.

Signed-off-by: Christoph Hellwig <hch@lst.de>

2019-09-04 11:13:20 +02:00

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