Index: linux-2.6.18-92.1.10/drivers/md/raid5.c
===================================================================
--- linux-2.6.18-92.1.10.orig/drivers/md/raid5.c	2008-11-10 11:00:51.000000000 +0900
+++ linux-2.6.18-92.1.10/drivers/md/raid5.c	2008-11-10 11:02:38.000000000 +0900
@@ -3251,6 +3251,8 @@
 		handle_stripe(sh, conf->spare_page, NULL);
 		release_stripe(sh);
 
+		cond_resched();
+
 		spin_lock_irq(&conf->device_lock);
 	}
 	PRINTK("%d stripes handled\n", handled);