linux-kernel - Re: [PATCH 1/5] fix incorrect variable type of do_try_to_free

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Date:	Thu, 05 Jun 2008 10:26:44 +0900
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	kosaki.motohiro@...fujitsu.com
Cc:	kosaki.motohiro@...fujitsu.com,
	LKML <linux-kernel@...r.kernel.org>,
	linux-mm <linux-mm@...ck.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Nishanth Aravamudan <nacc@...ibm.com>
Subject: Re: [PATCH 1/5] fix incorrect variable type of 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 tyep unchanged.
> 
> thus, overflow problem is possible.
> 
> 
> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>

sorry, this patch already get Nishanth-san's ACK.
I'll append it and resend by this mail.


----------------------------
fix incorrect variable type of 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 tyep unchanged.

thus, overflow problem is possible.


Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Acked-by: Nishanth Aravamudan <nacc@...ibm.com>

---
 mm/vmscan.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: b/mm/vmscan.c
===================================================================
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1317,7 +1317,7 @@ static unsigned long do_try_to_free_page
 					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;



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