27 lines
939 B
Diff
27 lines
939 B
Diff
From: Thomas Gleixner <tglx@linutronix.de>
|
|
Date: Fri, 3 Jul 2009 08:44:34 -0500
|
|
Subject: [PATCH 063/290] mm/scatterlist: Do not disable irqs on RT
|
|
Origin: https://git.kernel.org/cgit/linux/kernel/git/rt/linux-stable-rt.git/commit?id=be6d4affd5215ceaca4642942e1914cb32b9f6e2
|
|
|
|
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 8c3036c37ba0..336162c2813f 100644
|
|
--- a/lib/scatterlist.c
|
|
+++ b/lib/scatterlist.c
|
|
@@ -777,7 +777,7 @@ 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);
|