summaryrefslogtreecommitdiffstats
path: root/mm/slub.c
diff options
context:
space:
mode:
Diffstat (limited to 'mm/slub.c')
-rw-r--r--mm/slub.c30
1 files changed, 18 insertions, 12 deletions
diff --git a/mm/slub.c b/mm/slub.c
index c83fe96f5e42..e131084e87a3 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1069,13 +1069,13 @@ bad:
return 0;
}
-static noinline int free_debug_processing(struct kmem_cache *s,
- struct page *page, void *object, unsigned long addr)
+static noinline struct kmem_cache_node *free_debug_processing(
+ struct kmem_cache *s, struct page *page, void *object,
+ unsigned long addr, unsigned long *flags)
{
- unsigned long flags;
- int rc = 0;
+ struct kmem_cache_node *n = get_node(s, page_to_nid(page));
- local_irq_save(flags);
+ spin_lock_irqsave(&n->list_lock, *flags);
slab_lock(page);
if (!check_slab(s, page))
@@ -1113,15 +1113,19 @@ static noinline int free_debug_processing(struct kmem_cache *s,
set_track(s, object, TRACK_FREE, addr);
trace(s, page, object, 0);
init_object(s, object, SLUB_RED_INACTIVE);
- rc = 1;
out:
slab_unlock(page);
- local_irq_restore(flags);
- return rc;
+ /*
+ * Keep node_lock to preserve integrity
+ * until the object is actually freed
+ */
+ return n;
fail:
+ slab_unlock(page);
+ spin_unlock_irqrestore(&n->list_lock, *flags);
slab_fix(s, "Object at 0x%p not freed", object);
- goto out;
+ return NULL;
}
static int __init setup_slub_debug(char *str)
@@ -1214,8 +1218,9 @@ static inline void setup_object_debug(struct kmem_cache *s,
static inline int alloc_debug_processing(struct kmem_cache *s,
struct page *page, void *object, unsigned long addr) { return 0; }
-static inline int free_debug_processing(struct kmem_cache *s,
- struct page *page, void *object, unsigned long addr) { return 0; }
+static inline struct kmem_cache_node *free_debug_processing(
+ struct kmem_cache *s, struct page *page, void *object,
+ unsigned long addr, unsigned long *flags) { return NULL; }
static inline int slab_pad_check(struct kmem_cache *s, struct page *page)
{ return 1; }
@@ -2452,7 +2457,8 @@ static void __slab_free(struct kmem_cache *s, struct page *page,
stat(s, FREE_SLOWPATH);
- if (kmem_cache_debug(s) && !free_debug_processing(s, page, x, addr))
+ if (kmem_cache_debug(s) &&
+ !(n = free_debug_processing(s, page, x, addr, &flags)))
return;
do {