linux-kernel - [PATCH] mm/swapfile.c: use list_for_each_entry_safe in free_swap_count

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Date:	Tue, 15 Dec 2015 23:04:29 +0800
From:	Geliang Tang <geliangtang@....com>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Jerome Marchand <jmarchan@...hat.com>,
	Vlastimil Babka <vbabka@...e.cz>,
	Al Viro <viro@...iv.linux.org.uk>
Cc:	Geliang Tang <geliangtang@....com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] mm/swapfile.c: use list_for_each_entry_safe in free_swap_count_continuations

Use list_for_each_entry_safe() instead of list_for_each_safe() to
simplify the code.

Signed-off-by: Geliang Tang <geliangtang@....com>
---
 mm/swapfile.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/mm/swapfile.c b/mm/swapfile.c
index 7c714c6..31dc94f 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -2957,11 +2957,10 @@ static void free_swap_count_continuations(struct swap_info_struct *si)
 		struct page *head;
 		head = vmalloc_to_page(si->swap_map + offset);
 		if (page_private(head)) {
-			struct list_head *this, *next;
-			list_for_each_safe(this, next, &head->lru) {
-				struct page *page;
-				page = list_entry(this, struct page, lru);
-				list_del(this);
+			struct page *page, *next;
+
+			list_for_each_entry_safe(page, next, &head->lru, lru) {
+				list_del(&page->lru);
 				__free_page(page);
 			}
 		}
-- 
2.5.0


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