Date: Tue, 4 Dec 2007 20:21:47 +0300
From: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
To: Christoph Hellwig <hch@infradead.org>
Cc: Mike Snitzer <snitzer@gmail.com>, lkml <linux-kernel@vger.kernel.org>,
       netdev@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: Re: [0/4] DST: Distributed storage.
Message-ID: <20071204172146.GA21838@2ka.mipt.ru>
References: <aqqqqasdzxczc036@2ka.mipt.ru> <11967790263179@2ka.mipt.ru> <170fa0d20712040725o506a47cayb137993041ec3a63@mail.gmail.com> <20071204165625.GA14995@infradead.org>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20071204165625.GA14995@infradead.org>
User-Agent: Mutt/1.5.9i
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 906
Lines: 20

On Tue, Dec 04, 2007 at 04:56:26PM +0000, Christoph Hellwig (hch@infradead.org) wrote:
> > >  * fixed bug with XFS metadata update (it can provide slab pages to the
> > >         DST, so it is not allowed to transfer them using ->sendpage())
> 
> xfs hasn't been doing that anymore for quite a while.  Block drivers
> don't need hacks for it anymore, epsecially as it's not reliably
> detectable.

I use 2.6.22 and it is there, maybe it was changed later.
Right now it can be detected quite trivially, but can result in a little
more bio startup overhead, I just did not know that it was allowed and
thus did not have a check in the DST.

-- 
	Evgeniy Polyakov
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/