From: kosaki.motohiro@jp.fujitsu.com <kosaki.motohiro@jp.fujitsu.com>
Date: Thu, 12 Jun 2008 22:21:27 +0000 (-0700)
Subject: mm: fix incorrect variable type in do_try_to_free_pages()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c700be3d1320d2be4f04c8a5330186b7df724438;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

mm: fix incorrect variable type in do_try_to_free_pages()

"Smarter retry of costly-order allocations" patch series change behaver of
do_try_to_free_pages().  But unfortunately ret variable type was
unchanged.

Thus an overflow is possible.

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Acked-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/mm/vmscan.c b/mm/vmscan.c
index 9a29901ad3b3..967d30ccd92b 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1307,7 +1307,7 @@ static unsigned long do_try_to_free_pages(struct zonelist *zonelist,
 					struct scan_control *sc)
 {
 	int priority;
-	int ret = 0;
+	unsigned long ret = 0;
 	unsigned long total_scanned = 0;
 	unsigned long nr_reclaimed = 0;
 	struct reclaim_state *reclaim_state = current->reclaim_state;