mm, vmscan: remove redundant check in shrink_zones()
As pointed out by Minchan Kim, shrink_zones() checks for populated zones in a zonelist but a zonelist can never contain unpopulated zones. While it's not related to the node-lru series, it can be cleaned up now. Link: http://lkml.kernel.org/r/1468853426-12858-2-git-send-email-mgorman@techsingularity.net Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Suggested-by: Minchan Kim <minchan@kernel.org> Acked-by: Minchan Kim <minchan@kernel.org> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -2605,9 +2605,6 @@ static void shrink_zones(struct zonelist *zonelist, struct scan_control *sc)
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for_each_zone_zonelist_nodemask(zone, z, zonelist,
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for_each_zone_zonelist_nodemask(zone, z, zonelist,
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sc->reclaim_idx, sc->nodemask) {
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sc->reclaim_idx, sc->nodemask) {
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if (!populated_zone(zone))
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continue;
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/*
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/*
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* Take care memory controller reclaiming has small influence
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* Take care memory controller reclaiming has small influence
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* to global LRU.
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* to global LRU.
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