Adding debian version 5.10.209-2.debian/5.10.209-2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 50 insertions, 0 deletions

diff --git a/debian/patches-rt/0204-mm-slub-Make-object_map_lock-a-raw_spinlock_t.patch b/debian/patches-rt/0204-mm-slub-Make-object_map_lock-a-raw_spinlock_t.patch
new file mode 100644
index 000000000..28c14ea49
--- /dev/null
+++ b/debian/patches-rt/0204-mm-slub-Make-object_map_lock-a-raw_spinlock_t.patch
@@ -0,0 +1,50 @@
+From d2d45bd13ad6112afefb224d46501b76473196eb Mon Sep 17 00:00:00 2001
+From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+Date: Thu, 16 Jul 2020 18:47:50 +0200
+Subject: [PATCH 204/323] mm/slub: Make object_map_lock a raw_spinlock_t
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.10/older/patches-5.10.204-rt100.tar.xz
+
+The variable object_map is protected by object_map_lock. The lock is always
+acquired in debug code and within already atomic context
+
+Make object_map_lock a raw_spinlock_t.
+
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+---
+ mm/slub.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/mm/slub.c b/mm/slub.c
+index 57c598dd7454..ac2ddf6a4220 100644
+--- a/mm/slub.c
++++ b/mm/slub.c
+@@ -435,7 +435,7 @@ static inline bool cmpxchg_double_slab(struct kmem_cache *s, struct page *page,
+ 
+ #ifdef CONFIG_SLUB_DEBUG
+ static unsigned long object_map[BITS_TO_LONGS(MAX_OBJS_PER_PAGE)];
+-static DEFINE_SPINLOCK(object_map_lock);
++static DEFINE_RAW_SPINLOCK(object_map_lock);
+ 
+ /*
+  * Determine a map of object in use on a page.
+@@ -451,7 +451,7 @@ static unsigned long *get_map(struct kmem_cache *s, struct page *page)
+ 
+ 	VM_BUG_ON(!irqs_disabled());
+ 
+-	spin_lock(&object_map_lock);
++	raw_spin_lock(&object_map_lock);
+ 
+ 	bitmap_zero(object_map, page->objects);
+ 
+@@ -464,7 +464,7 @@ static unsigned long *get_map(struct kmem_cache *s, struct page *page)
+ static void put_map(unsigned long *map) __releases(&object_map_lock)
+ {
+ 	VM_BUG_ON(map != object_map);
+-	spin_unlock(&object_map_lock);
++	raw_spin_unlock(&object_map_lock);
+ }
+ 
+ static inline unsigned int size_from_object(struct kmem_cache *s)
+-- 
+2.43.0
+