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md: Fix integrity registration error when no devices are capable 

We incorrectly returned -EINVAL when none of the devices in the array
had an integrity profile.  This in turn prevented mdadm from starting
the metadevice.  Fix this so we only return errors on mismatched
profiles and memory allocation failures.

Reported-by: Giacomo Catenazzi <cate@cateee.net>
Reported-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
hifive-unleashed-5.1
Martin K. Petersen 2011-03-28 20:09:12 -04:00 committed by Linus Torvalds
parent 7de8e5737d
commit 89078d572e
1 changed files with 2 additions and 6 deletions
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8
drivers/md/md.c
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@ -1777,12 +1777,6 @@ int md_integrity_register(mddev_t *mddev)
continue;
if (rdev->raid_disk < 0)
continue;
/*
* If at least one rdev is not integrity capable, we can not
* enable data integrity for the md device.
*/
if (!bdev_get_integrity(rdev->bdev))
return -EINVAL;
if (!reference) {
/* Use the first rdev as the reference */
reference = rdev;
@ -1793,6 +1787,8 @@ int md_integrity_register(mddev_t *mddev)
rdev->bdev->bd_disk) < 0)
return -EINVAL;
}
if (!reference || !bdev_get_integrity(reference->bdev))
return 0;
/*
* All component devices are integrity capable and have matching
* profiles, register the common profile for the md device.