Re: [PATCH] Export mm_update_next_owner function for vhost-net

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Subject: Re: [PATCH] Export mm_update_next_owner function for vhost-net
From: "Michael S. Tsirkin" <mst@xxxxxxxxxx>
Date: Mon, 17 Dec 2018 20:41:36 -0500
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>, Jason Wang <jasowang@xxxxxxxxxx>, gchen <guominchen@xxxxxxxxxxx>, kvm@xxxxxxxxxxxxxxx, virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx, netdev@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Sudip Mukherjee <sudipm.mukherjee@xxxxxxxxx>, "Luis R. Rodriguez" <mcgrof@xxxxxxxxxx>, Dominik Brodowski <linux@xxxxxxxxxxxxxxxxxxxx>
In-reply-to: <CAEEwsfQ9ARxJCZxy5bY70Aa0HYqwto-gROxT8fvrduNn0MVf=A@mail.gmail.com>
References: <1544676445-14897-1-git-send-email-gchen.guomin@gmail.com> <20181217113254.GA6971@infradead.org> <CAEEwsfQ9ARxJCZxy5bY70Aa0HYqwto-gROxT8fvrduNn0MVf=A@mail.gmail.com>

On Tue, Dec 18, 2018 at 09:39:16AM +0800, gchen chen wrote:
> Yes, I think so. 
> and i think the point is that unuse_mm() can't directly set tsk->mm=NULL.

So why can't unuse_mm call mm_update_next_owner?

-- 
MST

References:
- [PATCH] Export mm_update_next_owner function for vhost-net
  - From: gchen . guomin
- Re: [PATCH] Export mm_update_next_owner function for vhost-net
  - From: Christoph Hellwig

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