[Intel-gfx] [PATCH] Revert "drm/i915/gem: Drop relocation slowpath"

[Maarten Lankhorst]

Op 17-03-2020 om 13:38 schreef Chris Wilson:
> Quoting Maarten Lankhorst (2020-03-17 12:35:46)
>> This reverts commit 7dc8f1143778 ("drm/i915/gem: Drop relocation
>> slowpath"). We need the slowpath relocation for taking ww-mutex
>> inside the page fault handler, and we will take this mutex when
>> pinning all objects.
> Don't hold an exclusive lock across the relocation path; it's not
> required.
> -Chris

Is -EAGAIN the only sign we need to drop locks for mmap or former slowpath