From 48680d53abae6cad7df7eb850fb2acb81da70ef8 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 3 Jul 2009 08:44:34 -0500 Subject: [PATCH 063/347] mm/scatterlist: Do not disable irqs on RT Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.246-rt110.tar.xz For -RT it is enough to keep pagefault disabled (which is currently handled by kmap_atomic()). Signed-off-by: Thomas Gleixner --- lib/scatterlist.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/scatterlist.c b/lib/scatterlist.c index 3b859201f84c..093c3aa3d895 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); -- 2.36.1