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

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Message-ID: <20080611164855.6d0a3f76@bree.surriel.com>
Date:	Wed, 11 Jun 2008 16:48:55 -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 16:43:01 -0400
Lee Schermerhorn <Lee.Schermerhorn@...com> wrote:

> On Wed, 2008-06-11 at 16:32 -0400, Rik van Riel wrote:
> > On Wed, 11 Jun 2008 16:28:03 -0400
> > Lee Schermerhorn <Lee.Schermerhorn@...com> wrote:
> > > On Wed, 2008-06-11 at 13:01 -0700, Andrew Morton 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.
> > > 
> > > I noticed that the vmstat items [perhaps these will go away] still use
> > > "noreclaim".
> > 
> > $ cat /proc/vmstat
> > nr_free_pages 3887198
> > nr_inactive_anon 5043
> > nr_active_anon 2182
> > nr_inactive_file 67121
> > nr_active_file 49045
> > nr_unevictable 0
> > nr_mlock 0
> > 
> > Or am I looking at the wrong thing?
> 
> Do you have patch 21/24 applied?  In 26-rc5-mm1, I see the
> noreclaim_pgs_* vmstat items.  They're in the patch 21 you just posted,
> as well.

Doh!

I am working against:

http://userweb.kernel.org/~akpm/mmotm/

You may want to send Andrew an update against patch 21/24 that
changes those names from noreclaim_pgs_* to unevictable_pgs_*.

> Again, we might decide to drop that patch from the merge.  I found the
> stats useful during debug and test, but I don't know that they provide
> any value in the longer term.

That's an option too.  I'll let you and Kosaki-san decide on
that, since I had relatively little involvement with the
second half of the patch series recently.

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