From 16afa640570f09ecf21c1aac9404030304439bb4 Mon Sep 17 00:00:00 2001 Message-Id: <16afa640570f09ecf21c1aac9404030304439bb4.1601675151.git.zanussi@kernel.org> In-Reply-To: <5b5a156f9808b1acf1205606e03da117214549ea.1601675151.git.zanussi@kernel.org> References: <5b5a156f9808b1acf1205606e03da117214549ea.1601675151.git.zanussi@kernel.org> From: Thomas Gleixner Date: Fri, 3 Jul 2009 08:44:34 -0500 Subject: [PATCH 063/333] mm/scatterlist: Do not disable irqs on RT Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.148-rt64.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 60e7eca2f4be..aad8b9ecd496 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); -- 2.17.1