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yaml
---
r: 330439
b: refs/heads/master
c: db265ec
h: refs/heads/master
i:
  330437: 4fe0581
  330435: 35f00a0
  330431: f966565
v: v3
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Christoph Lameter authored and Pekka Enberg committed Sep 5, 2012
1 parent d08c893 commit 14d75e7
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Showing 3 changed files with 24 additions and 29 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 12c3667fb780e20360ad0bde32dfb3591ef609ad
refs/heads/master: db265eca77000c5dafc5608975afe8dafb2a02d5
30 changes: 21 additions & 9 deletions trunk/mm/slab_common.c
Original file line number Diff line number Diff line change
Expand Up @@ -100,6 +100,7 @@ struct kmem_cache *kmem_cache_create(const char *name, size_t size, size_t align
{
struct kmem_cache *s = NULL;
int err = 0;
char *n;

get_online_cpus();
mutex_lock(&slab_mutex);
Expand All @@ -108,16 +109,26 @@ struct kmem_cache *kmem_cache_create(const char *name, size_t size, size_t align
goto out_locked;


s = __kmem_cache_create(name, size, align, flags, ctor);
if (!s)
err = -ENOSYS; /* Until __kmem_cache_create returns code */
n = kstrdup(name, GFP_KERNEL);
if (!n) {
err = -ENOMEM;
goto out_locked;
}

s = __kmem_cache_create(n, size, align, flags, ctor);

if (s) {
/*
* Check if the slab has actually been created and if it was a
* real instatiation. Aliases do not belong on the list
*/
if (s->refcount == 1)
list_add(&s->list, &slab_caches);

/*
* Check if the slab has actually been created and if it was a
* real instatiation. Aliases do not belong on the list
*/
if (s && s->refcount == 1)
list_add(&s->list, &slab_caches);
} else {
kfree(n);
err = -ENOSYS; /* Until __kmem_cache_create returns code */
}

out_locked:
mutex_unlock(&slab_mutex);
Expand Down Expand Up @@ -153,6 +164,7 @@ void kmem_cache_destroy(struct kmem_cache *s)
if (s->flags & SLAB_DESTROY_BY_RCU)
rcu_barrier();

kfree(s->name);
kmem_cache_free(kmem_cache, s);
} else {
list_add(&s->list, &slab_caches);
Expand Down
21 changes: 2 additions & 19 deletions trunk/mm/slub.c
Original file line number Diff line number Diff line change
Expand Up @@ -210,10 +210,7 @@ static void sysfs_slab_remove(struct kmem_cache *);
static inline int sysfs_slab_add(struct kmem_cache *s) { return 0; }
static inline int sysfs_slab_alias(struct kmem_cache *s, const char *p)
{ return 0; }
static inline void sysfs_slab_remove(struct kmem_cache *s)
{
kfree(s->name);
}
static inline void sysfs_slab_remove(struct kmem_cache *s) { }

#endif

Expand Down Expand Up @@ -3929,7 +3926,6 @@ struct kmem_cache *__kmem_cache_create(const char *name, size_t size,
size_t align, unsigned long flags, void (*ctor)(void *))
{
struct kmem_cache *s;
char *n;

s = find_mergeable(size, align, flags, name, ctor);
if (s) {
Expand All @@ -3948,13 +3944,9 @@ struct kmem_cache *__kmem_cache_create(const char *name, size_t size,
return s;
}

n = kstrdup(name, GFP_KERNEL);
if (!n)
return NULL;

s = kmem_cache_alloc(kmem_cache, GFP_KERNEL);
if (s) {
if (kmem_cache_open(s, n,
if (kmem_cache_open(s, name,
size, align, flags, ctor)) {
int r;

Expand All @@ -3969,7 +3961,6 @@ struct kmem_cache *__kmem_cache_create(const char *name, size_t size,
}
kmem_cache_free(kmem_cache, s);
}
kfree(n);
return NULL;
}

Expand Down Expand Up @@ -5200,21 +5191,13 @@ static ssize_t slab_attr_store(struct kobject *kobj,
return err;
}

static void kmem_cache_release(struct kobject *kobj)
{
struct kmem_cache *s = to_slab(kobj);

kfree(s->name);
}

static const struct sysfs_ops slab_sysfs_ops = {
.show = slab_attr_show,
.store = slab_attr_store,
};

static struct kobj_type slab_ktype = {
.sysfs_ops = &slab_sysfs_ops,
.release = kmem_cache_release
};

static int uevent_filter(struct kset *kset, struct kobject *kobj)
Expand Down

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