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Message-Id: <1375075701-5998-6-git-send-email-iamjoonsoo.kim@lge.com>
Date: Mon, 29 Jul 2013 14:28:17 +0900
From: Joonsoo Kim <iamjoonsoo.kim@....com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Rik van Riel <riel@...hat.com>, Mel Gorman <mgorman@...e.de>,
Michal Hocko <mhocko@...e.cz>,
"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
Hugh Dickins <hughd@...gle.com>,
Davidlohr Bueso <davidlohr.bueso@...com>,
David Gibson <david@...son.dropbear.id.au>, linux-mm@...ck.org,
linux-kernel@...r.kernel.org, Joonsoo Kim <js1304@...il.com>,
Wanpeng Li <liwanp@...ux.vnet.ibm.com>,
Naoya Horiguchi <n-horiguchi@...jp.nec.com>,
Hillf Danton <dhillf@...il.com>,
Joonsoo Kim <iamjoonsoo.kim@....com>
Subject: [PATCH v3 5/9] mm, hugetlb: remove redundant list_empty check in gather_surplus_pages()
If list is empty, list_for_each_entry_safe() doesn't do anything.
So, this check is redundant. Remove it.
Acked-by: Michal Hocko <mhocko@...e.cz>
Reviewed-by: Wanpeng Li <liwanp@...ux.vnet.ibm.com>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@...ux.vnet.ibm.com>
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@....com>
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 87d7637..2e52afea 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -1020,11 +1020,8 @@ free:
spin_unlock(&hugetlb_lock);
/* Free unnecessary surplus pages to the buddy allocator */
- if (!list_empty(&surplus_list)) {
- list_for_each_entry_safe(page, tmp, &surplus_list, lru) {
- put_page(page);
- }
- }
+ list_for_each_entry_safe(page, tmp, &surplus_list, lru)
+ put_page(page);
spin_lock(&hugetlb_lock);
return ret;
--
1.7.9.5
--
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