From: Andrew Morton <akpm@osdl.org>
To: Steve Lord <lord@xfs.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: negative dentry_stat.nr_unused causes aggressive dcache pruning
Date: Thu, 9 Dec 2004 02:09:19 -0800 [thread overview]
Message-ID: <20041209020919.6f17e322.akpm@osdl.org> (raw)
In-Reply-To: <41B77D54.4080909@xfs.org>
Steve Lord <lord@xfs.org> wrote:
>
> I have seen this stat go negative (just from booting up a multi cpu box),
> and looking at the code, it is manipulated without locking in a number
> of places. I have only seen this in real life on a 2.4 kernel, but 2.6
> also looks vulnerable.
In 2.6, both dentry_stat.nr_unused and dentry_stat.nr_dentry are covered
by dcache_lock. I just double-checked and all seems well.
next prev parent reply other threads:[~2004-12-09 10:09 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-08 22:16 negative dentry_stat.nr_unused causes aggressive dcache pruning Steve Lord
2004-12-08 23:01 ` Greg Banks
2004-12-09 10:09 ` Andrew Morton [this message]
2004-12-09 16:33 ` Steve Lord
2004-12-09 20:54 ` Steve Lord
2004-12-09 21:19 ` Andrew Morton
2004-12-09 21:51 ` Steve Lord
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