[08/24] dm-raid456: add support for raising events to userspace.

Commit Message

NeilBrown June 1, 2010, 9:56 a.m. UTC

None

Patch

diff --git a/drivers/md/dm-raid456.c b/drivers/md/dm-raid456.c
index 5185a8f..d54f901 100644
--- a/drivers/md/dm-raid456.c
+++ b/drivers/md/dm-raid456.c
@@ -139,6 +139,13 @@  static int dev_parms(struct raid_set *rs, char **argv)
 	return 0;
 }
 
+static void do_table_event(struct work_struct *ws)
+{
+	struct raid_set *rs = container_of(ws, struct raid_set,
+					   md.event_work);
+	dm_table_event(rs->ti->table);
+}
+
 /*
  * Construct a RAID4/5/6 mapping:
  * Args:
@@ -290,6 +297,7 @@  static int raid_ctr(struct dm_target *ti, unsigned argc, char **argv)
 	if (rs->md.raid_disks - in_sync > rt->parity_devs)
 		goto err;
 
+	INIT_WORK(&rs->md.event_work, do_table_event);
 	ti->split_io = rs->md.chunk_sectors;
 	ti->private = rs;
 
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 4eccf4e..da860f7 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -6039,6 +6039,8 @@  void md_error(mddev_t *mddev, mdk_rdev_t *rdev)
 	set_bit(MD_RECOVERY_INTR, &mddev->recovery);
 	set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
 	md_wakeup_thread(mddev->thread);
+	if (mddev->event_work.func)
+		schedule_work(&mddev->event_work);
 	md_new_event_inintr(mddev);
 }
 
diff --git a/drivers/md/md.h b/drivers/md/md.h
index 8e19e86..6318175 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -315,6 +315,7 @@  struct mddev_s
 	struct bio *barrier;
 	atomic_t flush_pending;
 	struct work_struct barrier_work;
+	struct work_struct event_work;
 };