memcg: use helper macro FLUSH_TIME

Use helper macro FLUSH_TIME to indicate the flush time to improve the
readability a bit. No functional change intended.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Miaohe Lin <[email protected]>
Acked-by: Shakeel Butt <[email protected]>
Reviewed-by: Muchun Song <[email protected]>
Reviewed-by: David Hildenbrand <[email protected]>
Acked-by: Roman Gushchin <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Michal Hocko <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

0 files changed, 0 insertions, 0 deletions