From: Minchan Kim <minchan.kim@gmail.com>
To: Lin Ming <mlin@ss.pku.edu.cn>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-mm <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>,
Johannes Weiner <jweiner@redhat.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Mel Gorman <mel@csn.ul.ie>, Rik van Riel <riel@redhat.com>,
Lee Schermerhorn <lee.schermerhorn@hp.com>
Subject: Re: [PATCH] vmscan: add barrier to prevent evictable page in unevictable list
Date: Thu, 29 Sep 2011 03:05:03 +0900 [thread overview]
Message-ID: <20110928180503.GC1696@barrios-desktop> (raw)
In-Reply-To: <CAF1ivSaf8ER9yDWohudy-huiq5QHS8vE04R+4+nPTQihZ2MAmQ@mail.gmail.com>
On Wed, Sep 28, 2011 at 11:04:05PM +0800, Lin Ming wrote:
> On Wed, Sep 28, 2011 at 9:45 AM, Minchan Kim <minchan.kim@gmail.com> wrote:
> > When racing between putback_lru_page and shmem_unlock happens,
>
> s/shmem_unlock/shmem_lock/
I did it intentionally for represent shmem_lock with user = 1, lock = 0.
If you think it makes others confusing, I will change in next version.
Thanks.
>
> > progrom execution order is as follows, but clear_bit in processor #1
> > could be reordered right before spin_unlock of processor #1.
> > Then, the page would be stranded on the unevictable list.
--
Kind regards,
Minchan Kim
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next prev parent reply other threads:[~2011-09-28 18:05 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-28 1:45 [PATCH] vmscan: add barrier to prevent evictable page in unevictable list Minchan Kim
2011-09-28 2:21 ` KOSAKI Motohiro
2011-09-28 2:25 ` Minchan Kim
2011-09-28 2:48 ` KOSAKI Motohiro
2011-09-28 8:14 ` Johannes Weiner
2011-09-28 18:03 ` Minchan Kim
2011-09-29 9:54 ` [PATCH v2] " Minchan Kim
2011-09-29 12:50 ` KOSAKI Motohiro
2011-09-28 15:04 ` [PATCH] " Lin Ming
2011-09-28 18:05 ` Minchan Kim [this message]
2011-09-29 1:02 ` Lin Ming
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