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mm/compaction: cleanup on compaction_deferred

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When CONFIG_COMPACTION is enabled, compaction_deferred() tries to
recalculate the deferred limit again, which isn't necessary.

When CONFIG_COMPACTION is disabled, compaction_deferred() should return
"true" or "false" since it has "bool" for its return value.

Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Gavin Shan 2012-07-31 16:42:49 -07:00 committed by Linus Torvalds
parent 3c935d189b
commit c59e26104e
1 changed files with 2 additions and 2 deletions
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4
include/linux/compaction.h
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@ -58,7 +58,7 @@ static inline bool compaction_deferred(struct zone *zone, int order)
if (++zone->compact_considered > defer_limit)
zone->compact_considered = defer_limit;
return zone->compact_considered < (1UL << zone->compact_defer_shift);
return zone->compact_considered < defer_limit;
}
#else
@ -85,7 +85,7 @@ static inline void defer_compaction(struct zone *zone, int order)
static inline bool compaction_deferred(struct zone *zone, int order)
{
return 1;
return true;
}
#endif /* CONFIG_COMPACTION */