From: Jens Axboe <axboe@kernel.dk>
To: Peter Zijlstra <peterz@infradead.org>, Oleg Nesterov <oleg@redhat.com>
Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] block: Fix sys_ioprio_set(.which=IOPRIO_WHO_PGRP) task iteration
Date: Thu, 8 Apr 2021 13:44:23 -0600 [thread overview]
Message-ID: <e8579a4e-2456-a89b-b750-892d265ba053@kernel.dk> (raw)
In-Reply-To: <YG7Q5C4Rb5dx5GFx@hirez.programming.kicks-ass.net>
On 4/8/21 3:46 AM, Peter Zijlstra wrote:
>
> do_each_pid_thread() { } while_each_pid_thread() is a double loop and
> thus break doesn't work as expected. Also, it should be used under
> tasklist_lock because otherwise we can race against change_pid() for
> PGID/SID.
Applied, thanks.
--
Jens Axboe
next prev parent reply other threads:[~2021-04-08 19:44 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-08 9:46 Peter Zijlstra
2021-04-08 19:44 ` Jens Axboe [this message]
2021-04-09 10:08 ` Oleg Nesterov
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