From c9f2946fbec88d4baa3a6d47eb3a8e6b08b05cd9 Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@sunset.davemloft.net>
Date: Sun, 30 Apr 2006 22:54:27 -0700
Subject: [PATCH] [SPARC64]: Disable preemption during flush_tlb_pending().

A context switch will force a call to flush_tlb_pending() (via
switch_to()), so if we test tlb_nr to be non-zero, then sleep, it
would become zero and later back at the original context we'll pass
zero down into the TLB flushing code which should never see a nr
argument of zero.

Signed-off-by: David S. Miller <davem@davemloft.net>
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