Re: [PATCH v13] vhost: Reintroduces support of kthread API and adds mode selection

[Markus Elfring]

> This patch reintroduces kthread mode for vhost workers and provides
> configuration to select between kthread and task worker.
…

Is there a need to reconsider the relevance once more for the presented
cover letter?


…
> +++ b/drivers/vhost/vhost.c
…
> +static int vhost_attach_task_to_cgroups(struct vhost_worker *worker)
> +{
…
> +	vhost_worker_queue(worker, &attach.work);
> +
> +	mutex_lock(&worker->mutex);
…
> +	worker->attachment_cnt = saved_cnt;
> +
> +	mutex_unlock(&worker->mutex);
…

Under which circumstances would you become interested to apply a statement
like “guard(mutex)(&worker->mutex);”?
https://elixir.bootlin.com/linux/v6.16-rc6/source/include/linux/mutex.h#L225

Regards,
Markus