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From e548a9846277b0cf05cd81fc6441d578728d20f3 Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 3 Jul 2009 08:44:34 -0500
Subject: [PATCH 162/191] mm/scatterlist: Do not disable irqs on RT

For -RT it is enough to keep pagefault disabled (which is currently handled by
kmap_atomic()).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
 lib/scatterlist.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/scatterlist.c b/lib/scatterlist.c
index a59778946404..907f59045998 100644
--- a/lib/scatterlist.c
+++ b/lib/scatterlist.c
@@ -892,7 +892,7 @@ void sg_miter_stop(struct sg_mapping_iter *miter)
 			flush_kernel_dcache_page(miter->page);
 
 		if (miter->__flags & SG_MITER_ATOMIC) {
-			WARN_ON_ONCE(preemptible());
+			WARN_ON_ONCE(!pagefault_disabled());
 			kunmap_atomic(miter->addr);
 		} else
 			kunmap(miter->page);
-- 
2.19.1