* D. page->frozen -> frozen state
*
* If a slab is frozen then it is exempt from list management. It is not
- * on any list. The processor that froze the slab is the one who can
- * perform list operations on the page. Other processors may put objects
- * onto the freelist but the processor that froze the slab is the only
- * one that can retrieve the objects from the page's freelist.
+ * on any list except per cpu partial list. The processor that froze the
+ * slab is the one who can perform list operations on the page. Other
+ * processors may put objects onto the freelist but the processor that
+ * froze the slab is the only one that can retrieve the objects from the
+ * page's freelist.
*
* The list_lock protects the partial and full list on each node and
* the partial slab counter. If taken then no new slabs may be added or
return;
lockdep_assert_held(&n->list_lock);
- list_add(&page->lru, &n->full);
+ list_add(&page->slab_list, &n->full);
}
static void remove_full(struct kmem_cache *s, struct kmem_cache_node *n, struct page *page)
return;
lockdep_assert_held(&n->list_lock);
- list_del(&page->lru);
+ list_del(&page->slab_list);
}
/* Tracking of the number of slabs for debugging purposes */
{
n->nr_partial++;
if (tail == DEACTIVATE_TO_TAIL)
- list_add_tail(&page->lru, &n->partial);
+ list_add_tail(&page->slab_list, &n->partial);
else
- list_add(&page->lru, &n->partial);
+ list_add(&page->slab_list, &n->partial);
}
static inline void add_partial(struct kmem_cache_node *n,
struct page *page)
{
lockdep_assert_held(&n->list_lock);
- list_del(&page->lru);
+ list_del(&page->slab_list);
n->nr_partial--;
}
return NULL;
spin_lock(&n->list_lock);
- list_for_each_entry_safe(page, page2, &n->partial, lru) {
+ list_for_each_entry_safe(page, page2, &n->partial, slab_list) {
void *t;
if (!pfmemalloc_match(page, flags))
}
}
} while (read_mems_allowed_retry(cpuset_mems_cookie));
-#endif
+#endif /* CONFIG_NUMA */
return NULL;
}
discard_slab(s, page);
stat(s, FREE_SLAB);
}
-#endif
+#endif /* CONFIG_SLUB_CPU_PARTIAL */
}
/*
local_irq_restore(flags);
}
preempt_enable();
-#endif
+#endif /* CONFIG_SLUB_CPU_PARTIAL */
}
static inline void flush_slab(struct kmem_cache *s, struct kmem_cache_cpu *c)
struct page *page;
spin_lock_irqsave(&n->list_lock, flags);
- list_for_each_entry(page, &n->partial, lru)
+ list_for_each_entry(page, &n->partial, slab_list)
x += get_count(page);
spin_unlock_irqrestore(&n->list_lock, flags);
return x;
}
EXPORT_SYMBOL(kmem_cache_alloc_node_trace);
#endif
-#endif
+#endif /* CONFIG_NUMA */
/*
* Slow path handling. This may still be called frequently since objects
* then add it.
*/
if (!kmem_cache_has_cpu_partial(s) && unlikely(!prior)) {
- if (kmem_cache_debug(s))
- remove_full(s, n, page);
+ remove_full(s, n, page);
add_partial(n, page, DEACTIVATE_TO_TAIL);
stat(s, FREE_ADD_PARTIAL);
}
BUG_ON(irqs_disabled());
spin_lock_irq(&n->list_lock);
- list_for_each_entry_safe(page, h, &n->partial, lru) {
+ list_for_each_entry_safe(page, h, &n->partial, slab_list) {
if (!page->inuse) {
remove_partial(n, page);
- list_add(&page->lru, &discard);
+ list_add(&page->slab_list, &discard);
} else {
list_slab_objects(s, page,
"Objects remaining in %s on __kmem_cache_shutdown()");
}
spin_unlock_irq(&n->list_lock);
- list_for_each_entry_safe(page, h, &discard, lru)
+ list_for_each_entry_safe(page, h, &discard, slab_list)
discard_slab(s, page);
}
return ret;
}
EXPORT_SYMBOL(__kmalloc_node);
-#endif
+#endif /* CONFIG_NUMA */
#ifdef CONFIG_HARDENED_USERCOPY
/*
* Note that concurrent frees may occur while we hold the
* list_lock. page->inuse here is the upper limit.
*/
- list_for_each_entry_safe(page, t, &n->partial, lru) {
+ list_for_each_entry_safe(page, t, &n->partial, slab_list) {
int free = page->objects - page->inuse;
/* Do not reread page->inuse */
BUG_ON(free <= 0);
if (free == page->objects) {
- list_move(&page->lru, &discard);
+ list_move(&page->slab_list, &discard);
n->nr_partial--;
} else if (free <= SHRINK_PROMOTE_MAX)
- list_move(&page->lru, promote + free - 1);
+ list_move(&page->slab_list, promote + free - 1);
}
/*
spin_unlock_irqrestore(&n->list_lock, flags);
/* Release empty slabs */
- list_for_each_entry_safe(page, t, &discard, lru)
+ list_for_each_entry_safe(page, t, &discard, slab_list)
discard_slab(s, page);
if (slabs_node(s, node))
*/
slab_deactivate_memcg_cache_rcu_sched(s, kmemcg_cache_deact_after_rcu);
}
-#endif
+#endif /* CONFIG_MEMCG */
static int slab_mem_going_offline_callback(void *arg)
{
for_each_kmem_cache_node(s, node, n) {
struct page *p;
- list_for_each_entry(p, &n->partial, lru)
+ list_for_each_entry(p, &n->partial, slab_list)
p->slab_cache = s;
#ifdef CONFIG_SLUB_DEBUG
- list_for_each_entry(p, &n->full, lru)
+ list_for_each_entry(p, &n->full, slab_list)
p->slab_cache = s;
#endif
}
spin_lock_irqsave(&n->list_lock, flags);
- list_for_each_entry(page, &n->partial, lru) {
+ list_for_each_entry(page, &n->partial, slab_list) {
validate_slab_slab(s, page, map);
count++;
}
if (!(s->flags & SLAB_STORE_USER))
goto out;
- list_for_each_entry(page, &n->full, lru) {
+ list_for_each_entry(page, &n->full, slab_list) {
validate_slab_slab(s, page, map);
count++;
}
continue;
spin_lock_irqsave(&n->list_lock, flags);
- list_for_each_entry(page, &n->partial, lru)
+ list_for_each_entry(page, &n->partial, slab_list)
process_slab(&t, s, page, alloc, map);
- list_for_each_entry(page, &n->full, lru)
+ list_for_each_entry(page, &n->full, slab_list)
process_slab(&t, s, page, alloc, map);
spin_unlock_irqrestore(&n->list_lock, flags);
}
len += sprintf(buf, "No data\n");
return len;
}
-#endif
+#endif /* CONFIG_SLUB_DEBUG */
#ifdef SLUB_RESILIENCY_TEST
static void __init resiliency_test(void)
#ifdef CONFIG_SYSFS
static void resiliency_test(void) {};
#endif
-#endif
+#endif /* SLUB_RESILIENCY_TEST */
#ifdef CONFIG_SYSFS
enum slab_stat_type {
STAT_ATTR(CPU_PARTIAL_FREE, cpu_partial_free);
STAT_ATTR(CPU_PARTIAL_NODE, cpu_partial_node);
STAT_ATTR(CPU_PARTIAL_DRAIN, cpu_partial_drain);
-#endif
+#endif /* CONFIG_SLUB_STATS */
static struct attribute *slab_attrs[] = {
&slab_size_attr.attr,
if (buffer)
free_page((unsigned long)buffer);
-#endif
+#endif /* CONFIG_MEMCG */
}
static void kmem_cache_release(struct kobject *k)
projects / linux-2.6-block.git / blobdiff