Re: [Jfs-discussion] Unneeded kernel threads (xfs, jfs, gfs2)

[Christoph Hellwig <hch@xxxxxxxxxxxxx>]

On Tue, May 13, 2008 at 07:03:11PM +1000, David Chinner wrote:
> Sure - XFS will start another three kernel threads per filesystem
> that gets mounted. And for good measure, it cleans them up again
> on unmount. :)
> 
> The other threads are per-cpu workqueue threads that are shared
> across all XFS filesystems in the system and hence are started
> when XFS is initialised rather than when a mount occurs.

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.