[PATCH 1 of 8] MD: no integrity register if no gendisk
From: Jonathan Brassow <hidden>
Date: 2011-06-07 22:46:50
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 <redacted> Index: linux-2.6/drivers/md/md.c ===================================================================
--- linux-2.6.orig/drivers/md/md.c
+++ linux-2.6/drivers/md/md.c@@ -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))