dm: uevent generate events

This patch adds support for the dm_path_event dm_send_event functions which
create and send udev events.

Signed-off-by: Mike Anderson <andmike@linux.vnet.ibm.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/drivers/md/dm-uevent.h b/drivers/md/dm-uevent.h
index 9d776836489b..2eccc8bd671a 100644
--- a/drivers/md/dm-uevent.h
+++ b/drivers/md/dm-uevent.h
@@ -21,10 +21,19 @@
 #ifndef DM_UEVENT_H
 #define DM_UEVENT_H
 
+enum dm_uevent_type {
+        DM_UEVENT_PATH_FAILED,
+        DM_UEVENT_PATH_REINSTATED,
+};
+
 #ifdef CONFIG_DM_UEVENT
 
 extern int dm_uevent_init(void);
 extern void dm_uevent_exit(void);
+extern void dm_send_uevents(struct list_head *events, struct kobject *kobj);
+extern void dm_path_uevent(enum dm_uevent_type event_type,
+                           struct dm_target *ti, const char *path,
+                           unsigned nr_valid_paths);
 
 #else
 
@@ -35,6 +44,15 @@ static inline int dm_uevent_init(void)
 static inline void dm_uevent_exit(void)
 {
 }
+static inline void dm_send_uevents(struct list_head *events,
+                                   struct kobject *kobj)
+{
+}
+static inline void dm_path_uevent(enum dm_uevent_type event_type,
+                                  struct dm_target *ti, const char *path,
+                                  unsigned nr_valid_paths)
+{
+}
 
 #endif  /* CONFIG_DM_UEVENT */