selftests: memcg: remove protection from top level memcg

The reclaim is triggered by memory limit in a subtree, therefore the
testcase does not need configured protection against external reclaim.

Also, correct respective comments.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Michal Koutný <[email protected]>
Acked-by: Roman Gushchin <[email protected]>
Cc: David Vernet <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Richard Palethorpe <[email protected]>
Cc: Shakeel Butt <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
1 file changed