[4.9-stable PATCH 10/11] mm: fail get_vaddr_frames() for filesystem-dax mappings

2018-02-23 Thread Dan Williams
commit b7f0554a56f21fb3e636a627450a9add030889be upstream. Until there is a solution to the dma-to-dax vs truncate problem it is not safe to allow V4L2, Exynos, and other frame vector users to create long standing / irrevocable memory registrations against filesytem-dax vmas.

[4.9-stable PATCH 10/11] mm: fail get_vaddr_frames() for filesystem-dax mappings

2018-02-23 Thread Dan Williams
commit b7f0554a56f21fb3e636a627450a9add030889be upstream. Until there is a solution to the dma-to-dax vs truncate problem it is not safe to allow V4L2, Exynos, and other frame vector users to create long standing / irrevocable memory registrations against filesytem-dax vmas.