extremely tiny race window in raid1

 From raid1.c in 2.6.8.1:

         * inc refcount on their rdev.  Record them by setting
         * bios[x] to bio
         */
-       disks = conf->raid_disks;
        spin_lock_irq(&conf->device_lock);
+       disks = conf->raid_disks;
        for (i = 0;  i < disks; i++) {
                if (conf->mirrors[i].rdev &&
                    !conf->mirrors[i].rdev->faulty) {

(there are plenty of other places where small things like that happen,
and normally I say "shucks, he'll spot it and correct it, and it's no
biggie anyway", but my conscience is getting at me to report at least
some of them).


Peter