Re: [PATCH] block: restore the old set_task_ioprio() behaviour wrt PF_EXITING

[Christoph Hellwig <hch@xxxxxx>]

>  		task_lock(task);
>  		if (task->flags & PF_EXITING) {
> -			err = -ESRCH;
>  			kmem_cache_free(iocontext_cachep, ioc);
>  			goto out;

Please add a commnt here why we are not returning an error, otherwise
this is just getting "fixed" over and over again.