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Date: Tue, 13 May 2008 05:28:51 -0400
From: Christoph Hellwig <hch@infradead.org>
Subject: Re: [Jfs-discussion] Unneeded kernel threads (xfs, jfs, gfs2)
Message-ID: <20080513092851.GA19879@infradead.org>
References: <4828CAC6.3090402@unixsol.org> <48292742.8090409@sgi.com> <482951C3.60600@unixsol.org> <20080513090311.GZ155679365@sgi.com> <20080513092156.GA26736@infradead.org>
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To: David Chinner <dgc@sgi.com>
Cc: Georgi Chorbadzhiyski <gf@unixsol.org>, cluster-devel@redhat.com, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, jfs-discussion@lists.sourceforge.net, Donald Douwsma <donaldd@sgi.com>, xfs@oss.sgi.com

On Tue, May 13, 2008 at 05:21:56AM -0400, Christoph Hellwig wrote:
> Well, we could refcount the number of active xfs instances and
> start/stop the global threads based on that.  Not really worth my
> time IHMO, but if someone comes up with a clean enough patch it should
> go in.

Actually doing it in the VFS might be even better.  Add ->init and
->exit methods to struct file_system_type and then the filesystems can
move most of module_init/exit into the new methods.