Re: [PATCH] sched: Relax a restriction in sched_rt_can_attach()

[Peter Zijlstra]

On Tue, May 05, 2015 at 12:31:12PM -0400, Tejun Heo wrote:
> 
> What I don't want to happen is controllers failing migrations
> willy-nilly for random reasons leaving users baffled, which we've
> actually been doing unfortunately.  Maybe we need to deal with this
> fixed resource arbitration as a separate class and allow them to fail
> migration w/ -EBUSY.

Ah, _that_ was the problem.

Which is something created by this co-mounting of controllers.

You could of course store the ss-id of the failing operation in
task_struct and have a file reporting the name of the ss-id.

That way, there is a simple way to find out which controller failed the
migrate.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/