md: clean up irregularity with raid autodetect
When a raid1 array is stopped, all components currently get added to the list
for auto-detection. However we should really only add components that were
found by autodetection in the first place. So add a flag to record that
information, and use it.
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/md/md.c b/drivers/md/md.c
index b375de5..a71241c 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -1503,7 +1503,8 @@
free_disk_sb(rdev);
list_del_init(&rdev->same_set);
#ifndef MODULE
- md_autodetect_dev(rdev->bdev->bd_dev);
+ if (test_bit(AutoDetected, &rdev->flags))
+ md_autodetect_dev(rdev->bdev->bd_dev);
#endif
unlock_rdev(rdev);
kobject_put(&rdev->kobj);
@@ -6025,6 +6026,7 @@
MD_BUG();
continue;
}
+ set_bit(AutoDetected, &rdev->flags);
list_add(&rdev->same_set, &pending_raid_disks);
i_passed++;
}
diff --git a/include/linux/raid/md_k.h b/include/linux/raid/md_k.h
index 85a068b..7bb6d1a 100644
--- a/include/linux/raid/md_k.h
+++ b/include/linux/raid/md_k.h
@@ -83,6 +83,7 @@
#define BarriersNotsupp 5 /* BIO_RW_BARRIER is not supported */
#define AllReserved 6 /* If whole device is reserved for
* one array */
+#define AutoDetected 7 /* added by auto-detect */
int desc_nr; /* descriptor index in the superblock */
int raid_disk; /* role of device in array */
