Function allocates a string that is supposed to be disposed of by the
caller. That needs to be documented and maybe even the name needs to
reflect that.
Hmmm... A full duplicate of the slab cache? We may have many sparsely
used portions of the per node and per cpu structure as a result.
> + * prevent it from being deleted. If kmem_cache_destroy() is
> + * called for the root cache before we call it for a child cache,
> + * it will be queued for destruction when we finally drop the
> + * reference on the child cache.
> + */
> + if (new) {
> + down_write(&slub_lock);
> + s->refcount++;
> + up_write(&slub_lock);
> + }
Why do you need to increase the refcount? You made a full copy right?
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