Re: [PATCH 3/4] writeback: replace custom worker poolimplementation with unbound workqueue

From: Jan Kara
Date: Thu Mar 21 2013 - 07:33:01 EST

On Wed 20-03-13 22:07:18, Tejun Heo wrote:
> Hello, Dave.
> On Thu, Mar 21, 2013 at 12:57:21PM +1100, Dave Chinner wrote:
> > When you have a system that has 50+ active filesystems (pretty
> > common in the distributed storage environments were every disk has
> > it's own filesystem), knowing which filesystem(s) are getting stuck
> > in writeback from the sysrq-w or hangcheck output is pretty damn
> > important....
> Hmm... I guess, then, what we can do is adding a worker description
> which is printed out with task dump. ie. A work function can call
> work_set_desc(fmt, arg....). It won't be expensive and can be
> implemented relatively easily. Does that sound good enough?
Yeah, that sounds good! Thanks!

Jan Kara <jack@xxxxxxx>
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