[PATCH] device-mapper: dm-raid1 deadlock fix

[Alasdair G Kergon]

Fix a dm-raid1 deadlock: nested spinlocks with _irq.

Signed-Off-By: Alasdair G Kergon <agk@xxxxxxxxxx>
From: Tim Burgess <tim.burgess@xxxxxxxxxx>
--- diff/drivers/md/dm-raid1.c	2005-02-22 14:35:14.000000000 +0000
+++ source/drivers/md/dm-raid1.c	2005-02-22 14:35:01.000000000 +0000
@@ -253,9 +253,9 @@
 	else {
 		__rh_insert(rh, nreg);
 		if (nreg->state == RH_CLEAN) {
-			spin_lock_irq(&rh->region_lock);
+			spin_lock(&rh->region_lock);
 			list_add(&nreg->list, &rh->clean_regions);
-			spin_unlock_irq(&rh->region_lock);
+			spin_unlock(&rh->region_lock);
 		}
 		reg = nreg;
 	}
-
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