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MD: no integrity register if no gendisk 

Don't attempt md_integrity_register if there is no gendisk struct available.

When MD arrays are built via device-mapper, the gendisk structure is not
available via mddev.

Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
Jonathan Brassow 2011-06-08 15:10:08 +10:00 committed by NeilBrown
parent 59c5f46fbe
commit 629acb6aba
1 changed files with 2 additions and 2 deletions
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4
drivers/md/md.c
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@ -1781,8 +1781,8 @@ int md_integrity_register(mddev_t *mddev)
if (list_empty(&mddev->disks))
return 0; /* nothing to do */
if (blk_get_integrity(mddev->gendisk))
return 0; /* already registered */
if (!mddev->gendisk || blk_get_integrity(mddev->gendisk))
return 0; /* shouldn't register, or already is */
list_for_each_entry(rdev, &mddev->disks, same_set) {
/* skip spares and non-functional disks */
if (test_bit(Faulty, &rdev->flags))