[PATCH] x86: Deprecate useless bug

Remove the "temporary debugging check" which has managed to live for quite
some time, and is clearly unneeded.  The mm can never be live at this point,
so clearly checking the LDT in the mm->context is redundant as well.

Signed-off-by: Zachary Amsden <zach@vmware.com>
Cc: "Seth, Rohit" <rohit.seth@intel.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/i386/kernel/process.c

@@ -402,17 +402,7 @@ void flush_thread(void)
 
 void release_thread(struct task_struct *dead_task)
 {
-	if (dead_task->mm) {
-		// temporary debugging check
-		if (dead_task->mm->context.size) {
-			printk("WARNING: dead process %8s still has LDT? <%p/%d>\n",
-					dead_task->comm,
-					dead_task->mm->context.ldt,
-					dead_task->mm->context.size);
-			BUG();
-		}
-	}
-
+	BUG_ON(dead_task->mm);
 	release_vm86_irqs(dead_task);
 }