linux-kernel - Re: [PATCH 0/2] Don't show PF_IO

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Message-ID: <20210325204430.GE28349@redhat.com>
Date:   Thu, 25 Mar 2021 21:44:30 +0100
From:   Oleg Nesterov <oleg@...hat.com>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     "Eric W. Biederman" <ebiederm@...ssion.com>,
        Jens Axboe <axboe@...nel.dk>,
        io-uring <io-uring@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Stefan Metzmacher <metze@...ba.org>
Subject: Re: [PATCH 0/2] Don't show PF_IO_WORKER in /proc/<pid>/task/

On 03/25, Linus Torvalds wrote:
>
> The whole "signals are very special for IO threads" thing has caused
> so many problems, that maybe the solution is simply to _not_ make them
> special?

Or may be IO threads should not abuse CLONE_THREAD?

Why does create_io_thread() abuse CLONE_THREAD ?

One reason (I think) is that this implies SIGKILL when the process exits/execs,
anything else?

Oleg.