drm/etnaviv: User FOLL_LONGTERM in userptr
There's no mmu notifier or anything like that, releasing this pin is entirely up to userspace. Hence FOLL_LONGTERM. No cc: stable for this patch since a lot of the infrastructure around FOLL_LONGETRM (like not allowing it for pages currently sitting in ZONE_MOVEABLE before they're migrated) is still being worked on. So not big benefits yet. Reviewed-by: John Hubbard <jhubbard@nvidia.com> Cc: John Hubbard <jhubbard@nvidia.com> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Cc: Lucas Stach <l.stach@pengutronix.de> Cc: Russell King <linux+etnaviv@armlinux.org.uk> Cc: Christian Gmeiner <christian.gmeiner@gmail.com> Cc: etnaviv@lists.freedesktop.org Link: https://patchwork.freedesktop.org/patch/msgid/20210301095254.1946084-2-daniel.vetter@ffwll.ch
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