[merged] mm-slub-make-object_map_lock-a-raw_spinlock_t.patch removed from -mm tree

[merged] mm-slub-make-object_map_lock-a-raw_spinlock_t.patch removed from -mm tree

[akpm]

The patch titled
     Subject: mm: slub: make object_map_lock a raw_spinlock_t
has been removed from the -mm tree.  Its filename was
     mm-slub-make-object_map_lock-a-raw_spinlock_t.patch

This patch was dropped because it was merged into mainline or a subsystem tree

------------------------------------------------------
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Subject: mm: slub: make object_map_lock a raw_spinlock_t

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.

Link: https://lkml.kernel.org/r/20210904105003.11688-30-vbabka@suse.cz
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Christoph Lameter <cl@linux.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Jann Horn <jannh@google.com>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Qian Cai <quic_qiancai@quicinc.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/slub.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/mm/slub.c~mm-slub-make-object_map_lock-a-raw_spinlock_t
+++ a/mm/slub.c
@@ -452,7 +452,7 @@ static inline bool cmpxchg_double_slab(s
 
 #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);
 
 static void __fill_map(unsigned long *obj_map, struct kmem_cache *s,
 		       struct page *page)
@@ -497,7 +497,7 @@ static unsigned long *get_map(struct kme
 {
 	VM_BUG_ON(!irqs_disabled());
 
-	spin_lock(&object_map_lock);
+	raw_spin_lock(&object_map_lock);
 
 	__fill_map(object_map, s, page);
 
@@ -507,7 +507,7 @@ static unsigned long *get_map(struct kme
 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)
_

Patches currently in -mm which might be from bigeasy@linutronix.de are