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Message-ID: <f75cb32b7c262fe852c53544034f5b6047d29b65.camel@gmx.de>
Date:   Fri, 19 Aug 2022 08:01:42 +0200
From:   Mike Galbraith <efault@....de>
To:     Xie Yongji <xieyongji@...edance.com>, jasowang@...hat.com,
        mst@...hat.com, xiaodong.liu@...el.com, maxime.coquelin@...hat.com,
        stefanha@...hat.com
Cc:     songmuchun@...edance.com,
        virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 3/5] vduse: Support using userspace pages as bounce
 buffer

Greetings,

On Wed, 2022-08-03 at 12:55 +0800, Xie Yongji wrote:
>
> diff --git a/drivers/vdpa/vdpa_user/iova_domain.h b/drivers/vdpa/vdpa_user/iova_domain.h
> index 2722d9b8e21a..4e0e50e7ac15 100644
> --- a/drivers/vdpa/vdpa_user/iova_domain.h
> +++ b/drivers/vdpa/vdpa_user/iova_domain.h
> @@ -14,6 +14,7 @@
>  #include <linux/iova.h>
>  #include <linux/dma-mapping.h>
>  #include <linux/vhost_iotlb.h>
> +#include <linux/rwlock.h>
                   ^^^^^^^^

Erm, that should be spinlock.h.

#ifndef __LINUX_RWLOCK_H
#define __LINUX_RWLOCK_H

#ifndef __LINUX_SPINLOCK_H
# error "please don't include this file directly"
#endif

This belated comment inspired by PREEMPT_RT build meeting the above :)

	-Mike

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