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Message-ID: <20230516134002.GB28890@redhat.com>
Date:   Tue, 16 May 2023 15:40:03 +0200
From:   Oleg Nesterov <oleg@...hat.com>
To:     Mike Christie <michael.christie@...cle.com>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Christian Brauner <brauner@...nel.org>,
        Thorsten Leemhuis <linux@...mhuis.info>,
        nicolas.dichtel@...nd.com,
        Linux kernel regressions list <regressions@...ts.linux.dev>,
        hch@...radead.org, stefanha@...hat.com, jasowang@...hat.com,
        mst@...hat.com, sgarzare@...hat.com,
        virtualization@...ts.linux-foundation.org, ebiederm@...ssion.com,
        konrad.wilk@...cle.com, linux-kernel@...r.kernel.org,
        Jens Axboe <axboe@...nel.dk>
Subject: Re: [PATCH v11 8/8] vhost: use vhost_tasks for worker threads

On 05/15, Mike Christie wrote:
>
> --- a/kernel/vhost_task.c
> +++ b/kernel/vhost_task.c
> @@ -75,13 +75,13 @@ struct vhost_task *vhost_task_create(int (*fn)(void *), void *arg,
>  				     const char *name)
>  {
>  	struct kernel_clone_args args = {
> -		.flags		= CLONE_FS | CLONE_UNTRACED | CLONE_VM,
> +		.flags		= CLONE_FS | CLONE_UNTRACED | CLONE_VM |
> +				  CLONE_THREAD | CLONE_SIGHAND,

I am looking at 6/8 on https://lore.kernel.org/lkml/ ...

with this change kernel_wait4() in vhost_task_stop() won't work?

Oleg.

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