linux-kernel - Re: [PATCH -mm 11/24] pageflag helpers for configed-out flags

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Message-ID: <20080611163007.4eae7f16@bree.surriel.com>
Date:	Wed, 11 Jun 2008 16:30:07 -0400
From:	Rik van Riel <riel@...hat.com>
To:	Lee Schermerhorn <Lee.Schermerhorn@...com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, kosaki.motohiro@...fujitsu.com
Subject: Re: [PATCH -mm 11/24] pageflag helpers for configed-out flags

On Wed, 11 Jun 2008 16:23:47 -0400
Lee Schermerhorn <Lee.Schermerhorn@...com> wrote:
> On Wed, 2008-06-11 at 16:08 -0400, Rik van Riel wrote:
> > On Wed, 11 Jun 2008 13:01:45 -0700
> > Andrew Morton <akpm@...ux-foundation.org> wrote:
> > > On Wed, 11 Jun 2008 14:42:25 -0400
> > > Rik van Riel <riel@...hat.com> wrote:
> > > 
> > > > Define proper false/noop inline functions for noreclaim page
> > > > flags when !defined(CONFIG_NORECLAIM_LRU)
> > > 
> > > I changed that to CONFIG_UNEVICTABLE_LRU.
> > > 
> > > Did we agree that the presence of this config variable is undesirable? 
> > > If so, what's involved in making it go away?
> > 
> > We agreed that having CONFIG_NORELAIM_SWAP was bad, that one went away.
> 
> That was CONFIG_NORELAIM_MLOCK, right?

You're right.

> Which reminds me:  we'll need to change the description of
> CONFIG_UNEVICTABLE_LRU to state that it uses 2 page flags if, indeed, we
> want to say anything about page flag usage in the Kconfig help text.
> Not sure that's helpful.

True, we might as well remove that comment.

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