linux-kernel - Re: [PATCH 00/18] virtiofs: Fix various races and cleanups round 1

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Message-ID: <20190906103613.GH5900@stefanha-x1.localdomain>
Date:   Fri, 6 Sep 2019 11:36:13 +0100
From:   Stefan Hajnoczi <stefanha@...hat.com>
To:     Miklos Szeredi <miklos@...redi.hu>
Cc:     Vivek Goyal <vgoyal@...hat.com>, linux-fsdevel@...r.kernel.org,
        virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org, virtio-fs@...hat.com,
        "Dr. David Alan Gilbert" <dgilbert@...hat.com>,
        "Michael S. Tsirkin" <mst@...hat.com>
Subject: Re: [PATCH 00/18] virtiofs: Fix various races and cleanups round 1

On Fri, Sep 06, 2019 at 10:15:14AM +0200, Miklos Szeredi wrote:
> On Thu, Sep 5, 2019 at 9:49 PM Vivek Goyal <vgoyal@...hat.com> wrote:
> >
> > Hi,
> >
> > Michael Tsirkin pointed out issues w.r.t various locking related TODO
> > items and races w.r.t device removal.
> >
> > In this first round of cleanups, I have taken care of most pressing
> > issues.
> >
> > These patches apply on top of following.
> >
> > git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse.git#virtiofs-v4
> >
> > I have tested these patches with mount/umount and device removal using
> > qemu monitor. For example.
> 
> Is device removal mandatory?  Can't this be made a non-removable
> device?  Is there a good reason why removing the virtio-fs device
> makes sense?

Hot plugging and unplugging virtio PCI adapters is common.  I'd very
much like removal to work from the beginning.

Stefan

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