From: Andrew Morton <akpm@linux-foundation.org>
To: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
Cc: linux-kernel <linux-kernel@vger.kernel.org>,
stable <stable@kernel.org>, Rik van Riel <riel@redhat.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
David Howells <dhowells@redhat.com>
Subject: Re: [PATCH] Define a UNIQUE value for AS_UNEVICTABLE flag
Date: Thu, 2 Apr 2009 09:53:15 -0700 [thread overview]
Message-ID: <20090402095315.1098b6c3.akpm@linux-foundation.org> (raw)
In-Reply-To: <1238690835.7359.16.camel@lts-notebook>
On Thu, 02 Apr 2009 12:47:15 -0400 Lee Schermerhorn <Lee.Schermerhorn@hp.com> wrote:
> [PATCH] Define UNIQUE value of AS_UNEVICTABLE
>
> Needed in 2.6.28, 2.6.29, ...
>
> A new "address_space flag"--AS_MM_ALL_LOCKS--was defined to use the next
> available AS flag while the Unevictable LRU was under development. The
> Unevictable LRU was using the same flag and "no one" noticed. Current
> mainline, since 2.6.28, has same value for two symbolic flag names.
argh.
What are the user-observable effects of the bug, and why didn't anyone
notice it until now?
next prev parent reply other threads:[~2009-04-02 16:58 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-02 16:47 Lee Schermerhorn
2009-04-02 16:53 ` Andrew Morton [this message]
2009-04-02 18:02 ` KOSAKI Motohiro
2009-04-02 19:13 ` Avi Kivity
2009-04-02 18:08 ` Lee Schermerhorn
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