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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>
hifive-unleashed-5.1
NeilBrown 2008-03-04 14:29:31 -08:00 committed by Linus Torvalds
parent a1801f858e
commit d0fae18f1b
2 changed files with 4 additions and 1 deletions
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4
drivers/md/md.c
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@ -1503,7 +1503,8 @@ static void export_rdev(mdk_rdev_t * rdev)
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 @@ static void autostart_arrays(int part)
MD_BUG();
continue;
}
set_bit(AutoDetected, &rdev->flags);
list_add(&rdev->same_set, &pending_raid_disks);
i_passed++;
}

1
include/linux/raid/md_k.h
View File

@ -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 */