On Thu, May 04, 2023 at 03:53:19PM -0400, Stefan Hajnoczi wrote:
> is_external=true suspends fd handlers between aio_disable_external() and
> aio_enable_external(). The block layer's drain operation uses this
> mechanism to prevent new I/O from sneaking in between
> bdrv_drained_begin() and
is_external=true suspends fd handlers between aio_disable_external() and
aio_enable_external(). The block layer's drain operation uses this
mechanism to prevent new I/O from sneaking in between
bdrv_drained_begin() and bdrv_drained_end().
The previous commit converted the xen-block device to use
