On 18/11/2021 13:02, Thomas Hellström wrote:
With async migration, the shrinker may end up wanting to release the pages of an object while the migration blit is still running, since the GT migration code doesn't set up VMAs and the shrinker is thus oblivious to the fact that the GPU is still using the pages. Add waiting for gpu in the shrinker_release_pages() op and an argument to that function indicating whether the shrinker expects it to not wait for gpu. In the latter case the shrinker_release_pages() op will return -EBUSY if the object is not idle. Signed-off-by: Thomas Hellström <thomas.hellstrom@xxxxxxxxxxxxxxx>
Reviewed-by: Matthew Auld <matthew.auld@xxxxxxxxx>
