linux-kernel - Re: [PATCH/RFC] core/nfsd: allow kernel threads to use task

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Message-id: <170121485154.7109.13588704687316181624@noble.neil.brown.name>
Date:   Wed, 29 Nov 2023 10:40:51 +1100
From:   "NeilBrown" <neilb@...e.de>
To:     "Oleg Nesterov" <oleg@...hat.com>
Cc:     "Christian Brauner" <brauner@...nel.org>,
        "Al Viro" <viro@...iv.linux.org.uk>,
        "Jens Axboe" <axboe@...nel.dk>,
        "Chuck Lever" <chuck.lever@...cle.com>,
        "Jeff Layton" <jlayton@...nel.org>,
        "Ingo Molnar" <mingo@...hat.com>,
        "Peter Zijlstra" <peterz@...radead.org>,
        "Juri Lelli" <juri.lelli@...hat.com>,
        "Vincent Guittot" <vincent.guittot@...aro.org>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-nfs@...r.kernel.org
Subject: Re: [PATCH/RFC] core/nfsd: allow kernel threads to use task_work.

On Wed, 29 Nov 2023, Oleg Nesterov wrote:
> Forgot to menstion,
> 
> On 11/28, Oleg Nesterov wrote:
> >
> > but please
> > note irq_thread()->task_work_add(on_exit_work).
> 
> and this means that Neil's and your more patch were wrong ;)

Yes it does - thanks for that!
I guess we need a setting that is focused particularly on fput().
Probably a PF flag is best for that.

Thanks,
NeilBrown


> 
> Oleg.
> 
>