SLUB: Move sysfs operations outside of slub_lock (a0e1d1be) · Commits · 戴 / test

mm/slub.c

+15 −13

Original line number	Diff line number	Diff line
		@@ -2192,11 +2192,12 @@ void kmem_cache_destroy(struct kmem_cache *s)
		s->refcount--;
		if (!s->refcount) {
		list_del(&s->list);
		up_write(&slub_lock);
		if (kmem_cache_close(s))
		WARN_ON(1);
		sysfs_slab_remove(s);
		kfree(s);
		}
		} else
		up_write(&slub_lock);
		}
		EXPORT_SYMBOL(kmem_cache_destroy);
		@@ -2679,25 +2680,26 @@ struct kmem_cache kmem_cache_create(const char name, size_t size,
		*/
		s->objsize = max(s->objsize, (int)size);
		s->inuse = max_t(int, s->inuse, ALIGN(size, sizeof(void *)));
		up_write(&slub_lock);
		if (sysfs_slab_alias(s, name))
		goto err;
		} else {
		return s;
		}
		s = kmalloc(kmem_size, GFP_KERNEL);
		if (s && kmem_cache_open(s, GFP_KERNEL, name,
		if (s) {
		if (kmem_cache_open(s, GFP_KERNEL, name,
		size, align, flags, ctor)) {
		if (sysfs_slab_add(s)) {
		kfree(s);
		list_add(&s->list, &slab_caches);
		up_write(&slub_lock);
		if (sysfs_slab_add(s))
		goto err;
		return s;
		}
		list_add(&s->list, &slab_caches);
		} else
		kfree(s);
		}
		up_write(&slub_lock);
		return s;

		err:
		up_write(&slub_lock);
		if (flags & SLAB_PANIC)
		panic("Cannot create slabcache %s\n", name);
		else