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authorJohannes Weiner <hannes@cmpxchg.org>2019-11-30 17:55:52 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2019-12-01 12:59:07 -0800
commit1b05117df78e035afb5f66ef50bf8750d976ef08 (patch)
tree6e364f56cdffdc252eb1e25a20fe8a1d922e7e16 /lib/test_printf.c
parent0f6a5cff43d3bcd6aa54c9af267737249d02aa21 (diff)
downloadlinux-1b05117df78e035afb5f66ef50bf8750d976ef08.tar.bz2
mm: vmscan: harmonize writeback congestion tracking for nodes & memcgs
The current writeback congestion tracking has separate flags for kswapd reclaim (node level) and cgroup limit reclaim (memcg-node level). This is unnecessarily complicated: the lruvec is an existing abstraction layer for that node-memcg intersection. Introduce lruvec->flags and LRUVEC_CONGESTED. Then track that at the reclaim root level, which is either the NUMA node for global reclaim, or the cgroup-node intersection for cgroup reclaim. Link: http://lkml.kernel.org/r/20191022144803.302233-9-hannes@cmpxchg.org Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: Roman Gushchin <guro@fb.com> Reviewed-by: Shakeel Butt <shakeelb@google.com> Cc: Michal Hocko <mhocko@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/test_printf.c')
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