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Message-ID: <20060829115044.GA26794@infradead.org>
Date: Tue, 29 Aug 2006 12:50:44 +0100
From: Christoph Hellwig <hch@...radead.org>
To: Cedric Le Goater <clg@...ibm.com>
Cc: Christoph Hellwig <hch@...radead.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Neil Brown <neilb@...e.de>, nfs@...ts.sourceforge.net
Subject: Re: [NFS] kthread: update lockd to use kthread
On Fri, Aug 25, 2006 at 07:07:59PM +0200, Cedric Le Goater wrote:
> This kernel thread is a sub thread of the lockd thread. It's a bit more
> simple and does not require as much modification. It still depends on the
> way its parent is killed and it will require some more work when the sunrpc
> thread are fixed.
Yes, the whole sunrpc/nfs thread situation is rather difficult.
> The SIGKILL used to terminate the threads is a challenge ... it propagates
> to sub threads. Some other stuff that bother me in using the kthread api in
> sunrpc : nfs_callback_down() uses a wait on a completion with a timeout.
> This is not possible with the kthread but might not be really useful. dunno.
The usage look buggy to me because we can't guarantee thread exit. But
I really don't even understand the requirements for those threads yet,
I wish someone could write up a coherent description.
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