linux-kernel - Re: [PATCH] vmscan: initialize sc->nr

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Message-Id: <20090211195116.C3BA.KOSAKI.MOTOHIRO@jp.fujitsu.com>
Date:	Wed, 11 Feb 2009 19:52:12 +0900 (JST)
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	kosaki.motohiro@...fujitsu.com, minchan.kim@...il.com,
	hannes@...xchg.org, riel@...hat.com, wli@...ementarian.org,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH] vmscan: initialize sc->nr_reclaimed properly take2

> > @@ -2245,6 +2247,7 @@ static int __zone_reclaim(struct zone *z
> >  	struct reclaim_state reclaim_state;
> >  	int priority;
> >  	struct scan_control sc = {
> > +		.nr_reclaimed = 0,
> >  		.may_writepage = !!(zone_reclaim_mode & RECLAIM_WRITE),
> >  		.may_swap = !!(zone_reclaim_mode & RECLAIM_SWAP),
> >  		.swap_cluster_max = max_t(unsigned long, nr_pages,
> 
> Confused.  The compiler already initialises any unmentioned fields to zero,
> so this patch has no effect.

maybe, I was slept too ;-/




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