From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Michael S. Tsirkin" <mst@redhat.com>
Subject: Re: [PATCH] Export mm_update_next_owner function for vhost-net
Date: Mon, 17 Dec 2018 20:41:36 -0500
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References: <1544676445-14897-1-git-send-email-gchen.guomin@gmail.com>
 <20181217113254.GA6971@infradead.org>
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Cc: Christoph Hellwig <hch@infradead.org>,
        Jason Wang <jasowang@redhat.com>,
        gchen <guominchen@tencent.com>, kvm@vger.kernel.org,
        virtualization@lists.linux-foundation.org, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org,
        "Eric W. Biederman" <ebiederm@xmission.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Sudip Mukherjee <sudipm.mukherjee@gmail.com>,
        "Luis R. Rodriguez" <mcgrof@kernel.org>,
        Dominik Brodowski <linux@dominikbrodowski.net>
To: gchen chen <gchen.guomin@gmail.com>
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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