dm ioctl: introduce flag indicating uevent was generated
Set a new DM_UEVENT_GENERATED_FLAG when returning from ioctls to
indicate that a uevent was actually generated. This tells the userspace
caller that it may need to wait for the event to be processed.
Signed-off-by: Peter Rajnoha <prajnoha@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
diff --git a/include/linux/dm-ioctl.h b/include/linux/dm-ioctl.h
index aa95508..2c445e1 100644
--- a/include/linux/dm-ioctl.h
+++ b/include/linux/dm-ioctl.h
@@ -266,9 +266,9 @@
#define DM_DEV_SET_GEOMETRY _IOWR(DM_IOCTL, DM_DEV_SET_GEOMETRY_CMD, struct dm_ioctl)
#define DM_VERSION_MAJOR 4
-#define DM_VERSION_MINOR 16
+#define DM_VERSION_MINOR 17
#define DM_VERSION_PATCHLEVEL 0
-#define DM_VERSION_EXTRA "-ioctl (2009-11-05)"
+#define DM_VERSION_EXTRA "-ioctl (2010-03-05)"
/* Status bits */
#define DM_READONLY_FLAG (1 << 0) /* In/Out */
@@ -316,4 +316,9 @@
*/
#define DM_QUERY_INACTIVE_TABLE_FLAG (1 << 12) /* In */
+/*
+ * If set, a uevent was generated for which the caller may need to wait.
+ */
+#define DM_UEVENT_GENERATED_FLAG (1 << 13) /* Out */
+
#endif /* _LINUX_DM_IOCTL_H */