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-rw-r--r--drivers/xen/xenbus/xenbus_client.c1
-rw-r--r--drivers/xen/xenbus/xenbus_xs.c5
2 files changed, 5 insertions, 1 deletions
diff --git a/drivers/xen/xenbus/xenbus_client.c b/drivers/xen/xenbus/xenbus_client.c
index fd80e318b99c..0a21a12d9c34 100644
--- a/drivers/xen/xenbus/xenbus_client.c
+++ b/drivers/xen/xenbus/xenbus_client.c
@@ -133,6 +133,7 @@ int xenbus_watch_path(struct xenbus_device *dev, const char *path,
int err;
watch->node = path;
+ watch->will_handle = NULL;
watch->callback = callback;
err = register_xenbus_watch(watch);
diff --git a/drivers/xen/xenbus/xenbus_xs.c b/drivers/xen/xenbus/xenbus_xs.c
index 3a06eb699f33..e8bdbd0a1e26 100644
--- a/drivers/xen/xenbus/xenbus_xs.c
+++ b/drivers/xen/xenbus/xenbus_xs.c
@@ -705,7 +705,10 @@ int xs_watch_msg(struct xs_watch_event *event)
spin_lock(&watches_lock);
event->handle = find_watch(event->token);
- if (event->handle != NULL) {
+ if (event->handle != NULL &&
+ (!event->handle->will_handle ||
+ event->handle->will_handle(event->handle,
+ event->path, event->token))) {
spin_lock(&watch_events_lock);
list_add_tail(&event->list, &watch_events);
wake_up(&watch_events_waitq);