memcg: cleanup root memcg checks

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Replace the implicit checking of root memcg with explicit root memcg
checking i.e.  !css->parent with mem_cgroup_is_root().

Link: https://lkml.kernel.org/r/20210223205625.2792891-1-shakeelb@google.com
Signed-off-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Roman Gushchin <guro@fb.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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Shakeel Butt 2021-04-29 22:56:05 -07:00 • committed by Linus Torvalds

parent 27faca83a7

commit a47920306c

1 changed files with 2 additions and 2 deletions

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mm/memcontrol.c

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