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Diffstat (limited to '')
| -rw-r--r-- | debian/patches-rt/0063-mm-scatterlist-Do-not-disable-irqs-on-RT.patch | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/debian/patches-rt/0063-mm-scatterlist-Do-not-disable-irqs-on-RT.patch b/debian/patches-rt/0063-mm-scatterlist-Do-not-disable-irqs-on-RT.patch new file mode 100644 index 000000000..368da63b4 --- /dev/null +++ b/debian/patches-rt/0063-mm-scatterlist-Do-not-disable-irqs-on-RT.patch @@ -0,0 +1,30 @@ +From 48680d53abae6cad7df7eb850fb2acb81da70ef8 Mon Sep 17 00:00:00 2001 +From: Thomas Gleixner <tglx@linutronix.de> +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 <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 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 + |