Subject: mm: bounce: Use local_irq_save_nort
From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 09 Jan 2013 10:33:09 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.6/older/patches-4.6.2-rt5.tar.xz

kmap_atomic() is preemptible on RT.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
 block/bounce.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/block/bounce.c
+++ b/block/bounce.c
@@ -55,11 +55,11 @@ static void bounce_copy_vec(struct bio_v
 	unsigned long flags;
 	unsigned char *vto;
 
-	local_irq_save(flags);
+	local_irq_save_nort(flags);
 	vto = kmap_atomic(to->bv_page);
 	memcpy(vto + to->bv_offset, vfrom, to->bv_len);
 	kunmap_atomic(vto);
-	local_irq_restore(flags);
+	local_irq_restore_nort(flags);
 }
 
 #else /* CONFIG_HIGHMEM */
