linux-kernel - [PATCH 2/3] mm/slab: use list_for_each_entry in cache

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Date:	Wed,  2 Dec 2015 23:46:12 +0800
From:	Geliang Tang <geliangtang@....com>
To:	Christoph Lameter <cl@...ux.com>,
	Pekka Enberg <penberg@...nel.org>,
	David Rientjes <rientjes@...gle.com>,
	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Geliang Tang <geliangtang@....com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 2/3] mm/slab: use list_for_each_entry in cache_flusharray

Simplify the code with list_for_each_entry().

Signed-off-by: Geliang Tang <geliangtang@....com>
---
 mm/slab.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/mm/slab.c b/mm/slab.c
index 6bb0466..5d5aa3b 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -3338,17 +3338,12 @@ free_done:
 #if STATS
 	{
 		int i = 0;
-		struct list_head *p;
-
-		p = n->slabs_free.next;
-		while (p != &(n->slabs_free)) {
-			struct page *page;
+		struct page *page;
 
-			page = list_entry(p, struct page, lru);
+		list_for_each_entry(page, &n->slabs_free, lru) {
 			BUG_ON(page->active);
 
 			i++;
-			p = p->next;
 		}
 		STATS_SET_FREEABLE(cachep, i);
 	}
-- 
2.5.0


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