Quoting Chris Wilson (2020-06-23 16:23:31)
> Quoting Maarten Lankhorst (2020-06-23 15:28:18)
> > This reverts commit 9e0f9464e2ab36b864359a59b0e9058fdef0ce47,
> > and related commit 7ac2d2536dfa7 ("drm/i915/gem: Delete unused code").
>
> Regardless that you haven't adapted the series...
>
> This still prevents concurrent submission between clients, and does not
> remove the allocation mutexes. That latter we can do in a couple of
> patches that preserve the status quo with just a name switch and the
> forced removal of nestable shrinkers.
To be clear, I think the first patch has to be
https://patchwork.freedesktop.org/series/78772/ (provided the rebasing
went ok) to fully commit ourselves to removing obj->mm.mutex. Empirically,
we cannot use trylock inside the mmu_notifier as that often fails during
normal unmap.
-Chris
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