Re: [PATCH 2/2] block: fix ioprio_get/set(IOPRIO_WHO_PGRP) vs setuid(2)

[Jens Axboe]

On 8/16/20 5:31 PM, Davidlohr Bueso wrote:
> do_each_pid_thread(PIDTYPE_PGID) can race with a concurrent
> change_pid(PIDTYPE_PGID) that can move the task from one hlist
> to another while iterating. Serialize ioprio_get/set to take
> the tasklist_lock in this case.

LGTM:

Reviewed-by: Jens Axboe <ax...@kernel.dk>

-- 
Jens Axboe