[PATCH v3 4/4] drm/i915/ttm: ensure we unmap when purging

[Thomas Hellström]

On 1/6/22 18:49, Matthew Auld wrote:
> Purging can happen during swapping out, or directly invoked with the
> madvise ioctl. In such cases this doesn't involve a ttm move, which
> skips umapping the object.
>
> v2(Thomas):
> - add ttm_truncate helper, and just call into i915_ttm_move_notify() to
>    handle the unmapping step
>
> Fixes: cf3e3e86d779 ("drm/i915: Use ttm mmap handling for ttm bo's.")

Should this Fixes: tag be when we we introduce truncate for the TTM 
backend. IIRC that was in a later commit?

Otherwise

Reviewed-by: Thomas Hellström <thomas.hellstrom at linux.intel.com>

/Thomas