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Date: Fri, 29 Aug 2003 12:46:36 -0700 (PDT)
From: Shantanu Goel <sgoel01@yahoo.com>
Subject: Re: [VM PATCH] Faster reclamation of dirty pages and unused inode/dcache entries in 2.4.22
To: Andrea Arcangeli <andrea@suse.de>, Antonio Vargas <wind@cocodriloo.com>,
       linux-kernel@vger.kernel.org,
       Marc-Christian Petersen <m.c.p@wolk-project.de>
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Andrea,

I'll test and submit a patch against -aa.  Also, is
there a common benchmark that you use to test for
regression?

Thanks,
Shantanu

--- Andrea Arcangeli <andrea@suse.de> wrote:
> On Fri, Aug 29, 2003 at 11:57:28AM -0700, Mike Fedyk
> wrote:
> > [CCing AA & MCP]
> > 
> > > --- Mike Fedyk <mfedyk@matchmail.com> wrote:
> > > > But have you compared your patch with the VM
> patches
> > > > in -aa?  Will your
> > > > patch apply on -aa and make improvements there
> too?
> > > > 
> > > > In other words: Why would I want to use this
> patch
> > > > when I could use -aa?
> > 
> > On Fri, Aug 29, 2003 at 11:46:44AM -0700, Shantanu
> Goel wrote:
> > > I prefer to run stock kernels so I don't have as
> much
> > > experience with the -aa patches.  However, I
> took a
> > > look at the relevant code in 2.4.22pre7aa1 and I
> > > believe my patch should help there as well.  The
> > > writepage() and page rotation behaviour is
> similar to
> > > stock 2.4.22 though the inactive_list is
> per-classzone
> > > in -aa.  I am less sure about the inode/dcache
> part
> > > though under -aa.
> > 
> > You need to integrate with -aa on the VM.  It has
> been hard enough for
> > Andrea to get his stuff in, I doubt you will fair
> any better.
> > 
> > If your patch shows improvements when applied on
> -aa Andrea will probably
> > integrate it.
> 
> yes, at this point in time I'm willing to merge only
> anything that is an
> obvious improvement. More doubious things would
> better go in 2.6.
> 
> I didn't see the patch in question, Shantanu, if
> you're interested to
> merge it in -aa, could you submit against
> 2.4.22pre7aa1? Otherwise I'll
> check it and possibly merge it myself later (i've
> quite some backlog to
> merge already for the short term, but it can go in
> queue)
> 
> > Marc/Andrea, what do you think?  Any holes to poke
> in this here patch?
> 
> didn't check it yet.
> 
> Andrea


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