balloon: Disassociate handlers from balloon device on unplug
When a balloon device gets unplugged, allow the balloon handlers to be
freed.
Reported-by: Shaolong Hu <shu@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/balloon.c b/balloon.c
index f56fdc1..a2133db 100644
--- a/balloon.c
+++ b/balloon.c
@@ -52,6 +52,16 @@
return 0;
}
+void qemu_remove_balloon_handler(void *opaque)
+{
+ if (balloon_opaque != opaque) {
+ return;
+ }
+ balloon_event_fn = NULL;
+ balloon_stat_fn = NULL;
+ balloon_opaque = NULL;
+}
+
static int qemu_balloon(ram_addr_t target)
{
if (!balloon_event_fn) {
