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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:38 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:38 +0000
commit08b74a000942a380fe028845f92cd3a0dee827d5 (patch)
treeaa78b4e12607c3e1fcce8d5cc42df4330792f118 /debian/patches-rt/0063-mm-scatterlist-Do-not-disable-irqs-on-RT.patch
parentAdding upstream version 4.19.249. (diff)
downloadlinux-08b74a000942a380fe028845f92cd3a0dee827d5.tar.xz
linux-08b74a000942a380fe028845f92cd3a0dee827d5.zip
Adding debian version 4.19.249-2.debian/4.19.249-2debian
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--debian/patches-rt/0063-mm-scatterlist-Do-not-disable-irqs-on-RT.patch30
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
+