linux-kernel - Re: [PATCH v5 0/4] virtio-fs: shared file system for virtual machines

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Date:   Wed, 11 Sep 2019 10:52:47 -0400
From:   Vivek Goyal <vgoyal@...hat.com>
To:     Miklos Szeredi <mszeredi@...hat.com>
Cc:     virtualization@...ts.linux-foundation.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Stefan Hajnoczi <stefanha@...hat.com>,
        "Dr. David Alan Gilbert" <dgilbert@...hat.com>
Subject: Re: [PATCH v5 0/4] virtio-fs: shared file system for virtual machines

On Tue, Sep 10, 2019 at 05:12:02PM +0200, Miklos Szeredi wrote:
> Git tree for this version is available here:
> 
> git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse.git#virtiofs-v5
> 
> Only post patches that actually add virtiofs (virtiofs-v5-base..virtiofs-v5).
> 
> I've folded the series from Vivek and fixed a couple of TODO comments
> myself.  AFAICS two issues remain that need to be resolved in the short
> term, one way or the other: freeze/restore and full virtqueue.

Hi Miklos,

We are already handling full virtqueue by waiting a bit and retrying.
I think TODO in virtio_fs_enqueue_req() is stale. Caller already
handles virtqueue full situation by retrying.

Havind said that, this could be improved by using some sort of wait
queue or completion privimitve.

Thanks
Vivek