Re: [RFC] [PATCH] A clean aEvgeniy pproach to writeout throttling

Daniel Phillips
2007-12-11T19:39:16Z

On Tuesday 11 December 2007 05:15, Jens Axboe wrote:
> On Mon, Dec 10 2007, Daniel Phillips wrote:
> > Now about that block writeout deadlock... it doesn't just affect my
> > code, it basically breaks Linux as a storage platform, among other
> > things.
>
> As written in other similar threads in the past in which you also
> participated, I still of the opinion that this is a vm issue and
> should be solved as such.

The problem is solved. The main cornerstone of the solution is
bio throttling, simply because the resources in question are consumed by
bio transactions.

> As to the patch in question "fixing" it in the block layer, it's a
> fairly simple work around and I'm not totally against it. If you get
> rid of the ->bi_throttle stuff and just do sanity checks on the
> count, then we could look at getting some testing done.

Testing is already progressing fine without you, thankyou. If you do
want to participate, welcome, otherwise it is not a problem. Thanks
for picking up that bug yesterday.

Daniel