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>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/raid/md_k.h b/include/linux/raid/md_k.h
index 85a068bab625..7bb6d1abf71e 100644
--- a/include/linux/raid/md_k.h
+++ b/include/linux/raid/md_k.h
@@ -83,6 +83,7 @@ struct mdk_rdev_s
 #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 */