Hi,

Here is V2 of RFC patches for adding a notification queue to
vhost-user-fs device to send notifications from host to guest.
It also has patches to support remote posix locks which make use of this
newly introduced notification queue.

I have taken care of most of the comments from last iteration. Still one
major TODO item is to be able to interrupt/stop blocked thrads for locks
when guest reboots. 

Patches are also available here.

https://github.com/rhvgoyal/qemu/commits/blocking-locks-v2

Associated kernel changes are available here.

https://github.com/rhvgoyal/linux/commits/blocking-locks-v2

Thanks
Vivek

Vivek Goyal (5):
  virtiofsd: Get rid of unused fields in fv_QueueInfo
  virtiofsd: Release file locks using F_UNLCK
  virtiofd: Create a notification queue
  virtiofsd: Specify size of notification buffer using config space
  virtiofsd: Implement blocking posix locks

 contrib/virtiofsd/fuse_i.h                 |   1 +
 contrib/virtiofsd/fuse_kernel.h            |   7 +
 contrib/virtiofsd/fuse_lowlevel.c          |  23 ++-
 contrib/virtiofsd/fuse_lowlevel.h          |  25 +++
 contrib/virtiofsd/fuse_virtio.c            | 208 +++++++++++++++++----
 contrib/virtiofsd/passthrough_ll.c         |  80 ++++++--
 hw/virtio/vhost-user-fs-pci.c              |   2 +-
 hw/virtio/vhost-user-fs.c                  |  63 ++++++-
 include/hw/virtio/vhost-user-fs.h          |   3 +
 include/standard-headers/linux/virtio_fs.h |   5 +
 10 files changed, 354 insertions(+), 63 deletions(-)

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2.20.1