diff options
Diffstat (limited to 'include/block/block_int.h')
| -rw-r--r-- | include/block/block_int.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/block/block_int.h b/include/block/block_int.h index 327e478a73..1b811db8ec 100644 --- a/include/block/block_int.h +++ b/include/block/block_int.h @@ -605,6 +605,13 @@ struct BdrvChildRole { void (*drained_begin)(BdrvChild *child); void (*drained_end)(BdrvChild *child); + /* + * Returns whether the parent has pending requests for the child. This + * callback is polled after .drained_begin() has been called until all + * activity on the child has stopped. + */ + bool (*drained_poll)(BdrvChild *child); + /* Notifies the parent that the child has been activated/inactivated (e.g. * when migration is completing) and it can start/stop requesting * permissions and doing I/O on it. */ |