linux-kernel - Re: [1/4] DST: Distributed storage documentation.

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Message-ID: <20071210151225.GA17858@2ka.mipt.ru>
Date:	Mon, 10 Dec 2007 18:12:25 +0300
From:	Evgeniy Polyakov <johnpol@....mipt.ru>
To:	Kay Sievers <kay.sievers@...y.org>
Cc:	lkml <linux-kernel@...r.kernel.org>, netdev@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, Greg KH <greg@...ah.com>
Subject: Re: [1/4] DST: Distributed storage documentation.

On Mon, Dec 10, 2007 at 05:50:55PM +0300, Evgeniy Polyakov (johnpol@....mipt.ru) wrote:
> > Further questions:
> > Why do you do your own refcounting instead of using kref?
> 
> That's because I always used atomic operations as a reference counters
> and did not tried krefs :)
> They are the same actually (module tricky arches where smp_mb_* are
> required), so I can replace them in the next release.

Actually not - I have to set reference counter to something other than 1
or +/- 1, and thus will have to call kref_get() in a loop, which is a
very ugly step. Is there kref_set() or somethinglike that? At least not
in 2.6.22 what I'm using for now.

Sigh, I've converted most of the DST already...

-- 
	Evgeniy Polyakov
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