diff options
| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2020-07-16 18:47:50 +0200 |
|---|---|---|
| committer | Vlastimil Babka <vbabka@suse.cz> | 2021-09-04 10:16:45 +0200 |
| commit | 94ef0304e2b8dc942f46c74a13841d6b61f61d2f (patch) | |
| tree | b72ca84c9330077c80c404405209f0fef80a4fe4 /mm/slub.c | |
| parent | 5a836bf6b09f99ead1b69457ff39ab3011ece57b (diff) | |
| download | lwn-94ef0304e2b8dc942f46c74a13841d6b61f61d2f.tar.gz lwn-94ef0304e2b8dc942f46c74a13841d6b61f61d2f.zip | |
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.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Diffstat (limited to 'mm/slub.c')
| -rw-r--r-- | mm/slub.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/mm/slub.c b/mm/slub.c index b7f8b9d34e46..76e56ce55d21 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -452,7 +452,7 @@ 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); 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 kmem_cache *s, struct page *page) { 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 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) |