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-rw-r--r--include/sysemu/block-backend.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h
index 096c17f..7462228 100644
--- a/include/sysemu/block-backend.h
+++ b/include/sysemu/block-backend.h
@@ -58,6 +58,14 @@ typedef struct BlockDevOps {
* Runs when the size changed (e.g. monitor command block_resize)
*/
void (*resize_cb)(void *opaque);
+ /*
+ * Runs when the backend receives a drain request.
+ */
+ void (*drained_begin)(void *opaque);
+ /*
+ * Runs when the backend's last drain request ends.
+ */
+ void (*drained_end)(void *opaque);
} BlockDevOps;
/* This struct is embedded in (the private) BlockBackend struct and contains