From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx118.postini.com [74.125.245.118]) by kanga.kvack.org (Postfix) with SMTP id D1B496B0068 for ; Tue, 19 Jun 2012 21:39:17 -0400 (EDT) Received: from /spool/local by e7.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 19 Jun 2012 21:39:16 -0400 Received: from d01relay01.pok.ibm.com (d01relay01.pok.ibm.com [9.56.227.233]) by d01dlp01.pok.ibm.com (Postfix) with ESMTP id B9F8C38C8056 for ; Tue, 19 Jun 2012 21:39:14 -0400 (EDT) Received: from d01av04.pok.ibm.com (d01av04.pok.ibm.com [9.56.224.64]) by d01relay01.pok.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id q5K1dE4W154214 for ; Tue, 19 Jun 2012 21:39:14 -0400 Received: from d01av04.pok.ibm.com (loopback [127.0.0.1]) by d01av04.pok.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id q5K1dDuY009467 for ; Tue, 19 Jun 2012 21:39:14 -0400 From: Gavin Shan Subject: [PATCH RESEND 1/2] mm/compaction: cleanup on compaction_deferred Date: Wed, 20 Jun 2012 09:39:07 +0800 Message-Id: <1340156348-18875-1-git-send-email-shangw@linux.vnet.ibm.com> Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm@kvack.org Cc: rientjes@google.com, hannes@cmpxchg.org, minchan@kernel.org, akpm@linux-foundation.org, Gavin Shan 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 Acked-by: Minchan Kim Acked-by: Johannes Weiner --- include/linux/compaction.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/linux/compaction.h b/include/linux/compaction.h index 51a90b7..133ddcf 100644 --- a/include/linux/compaction.h +++ b/include/linux/compaction.h @@ -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 */ -- 1.7.9.5 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org