A userspace process holding a file descriptor to a virtio_blk device can
still invoke block_device_operations after hot unplug. For example, a
program that has /dev/vdb open can call ioctl(HDIO_GETGEO) after hot
unplug to invoke virtblk_getgeo().
Introduce a reference count in struct virtio_blk s
On Tue, Apr 28, 2020 at 03:30:09PM +0100, Stefan Hajnoczi wrote:
> A userspace process holding a file descriptor to a virtio_blk device can
> still invoke block_device_operations after hot unplug. For example, a
> program that has /dev/vdb open can call ioctl(HDIO_GETGEO) after hot
> unplug to inv
On Tue, Apr 28, 2020 at 11:25:07AM -0400, Michael S. Tsirkin wrote:
> On Tue, Apr 28, 2020 at 03:30:09PM +0100, Stefan Hajnoczi wrote:
> > A userspace process holding a file descriptor to a virtio_blk device can
> > still invoke block_device_operations after hot unplug. For example, a
> > program
On Tue, Apr 28, 2020 at 04:57:15PM +0100, Stefan Hajnoczi wrote:
> On Tue, Apr 28, 2020 at 11:25:07AM -0400, Michael S. Tsirkin wrote:
> > On Tue, Apr 28, 2020 at 03:30:09PM +0100, Stefan Hajnoczi wrote:
> > > A userspace process holding a file descriptor to a virtio_blk device can
> > > still invo
