[igt-dev] [PATCH i-g-t] lib: Purge os caches twice for good luck

[Joonas Lahtinen]

Quoting Chris Wilson (2018-06-15 16:32:49)
> If at first we don't succeed, try, try again.
> 
> References: https://bugs.freedesktop.org/show_bug.cgi?id=105967
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

Reviewed-by: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>

Regards, Joonas