linux-kernel - Re: [PATCH 10/28] FS-Cache: Recruit a couple of page flags for cache management [try #2]

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Date:	Wed, 9 Jan 2008 12:52:37 +1100
From:	Nick Piggin <nickpiggin@...oo.com.au>
To:	David Howells <dhowells@...hat.com>
Cc:	viro@....linux.org.uk, hch@...radead.org,
	Trond.Myklebust@...app.com, sds@...ho.nsa.gov,
	casey@...aufler-ca.com, linux-kernel@...r.kernel.org,
	selinux@...ho.nsa.gov, linux-security-module@...r.kernel.org
Subject: Re: [PATCH 10/28] FS-Cache: Recruit a couple of page flags for cache management [try #2]

On Wednesday 09 January 2008 10:51, David Howells wrote:
> Nick Piggin <nickpiggin@...oo.com.au> wrote:
> > > Nick Piggin <nickpiggin@...oo.com.au> wrote:
> > > > No. I mean call the bit PG_private2. That way non-pagecache and
> > > > filesystems that don't use fscache can use it.
> > >
> > > The bit is called PG_owner_priv_2, and then 'subclassed' to PG_fscache,
> > > much like PG_owner_priv_1 is 'subclassed' to PG_checked as was
> > > recommended.
> >
> > It is not owner_priv if you're putting checks and tests into core
> > kernel pagecache code for it. owner_priv means a filesystem has it
> > _all_ to itself.
>
> Okay, I'll change it if it makes you happy.

It is to make everybody happy. Especially in code that everyone works
on like mm/ and fs/, you can't just have everybody following their own
slightly different conventions.


> Bear in mind, though, you're 
> dictating instructions that conflict with those other people have dictated.

Can you point me to the posts. Thanks.
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