Re: [RFC][PATCH 2/7] UBC: core (structures, API)

[Kirill Korotaev]

> > +struct user_beancounter
> > +{
> > +	atomic_t		ub_refcount;
>
>
> Why not use a struct kref here instead of rolling your own reference
> counting logic?

We need more complex decrement/locking scheme than krefs
provide. e.g. in __put_beancounter() we need
atomic_dec_and_lock_irqsave() semantics for performance optimizations.

Kirill

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