Re: [virtio-dev] [PATCH v2 0/2] virtio-fs: add notification queue

[Stefan Hajnoczi <stefanha@redhat.com>]

On Mon, Feb 15, 2021 at 09:54:08AM +0000, Stefan Hajnoczi wrote:
> v2:
>  * Document empty virtqueue behavior for FUSE_NOTIFY_LOCK messages
> 
> This patch series adds the notification queue to the VIRTIO specification.
> This new virtqueue carries device->driver FUSE notify messages.  They are
> currently unused but will be necessary for file locking, which can block for an
> unbounded amount of time and therefore needs a asynchronous completion event
> instead of a request/response buffer that consumes space in the request
> virtqueue until the operation completes.
> 
> Patch 1 corrects an oversight I noticed: the file system device was not added
> to the Conformance chapter.
> 
> Stefan Hajnoczi (2):
>   virtio-fs: add file system device to Conformance chapter
>   virtio-fs: add notification queue
> 
>  conformance.tex | 23 ++++++++++++++++
>  virtio-fs.tex   | 71 ++++++++++++++++++++++++++++++++++++++++++-------
>  2 files changed, 84 insertions(+), 10 deletions(-)

Reminder to anyone who needs the virtio-fs notification queue: please
review this series.

Stefan

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