> > It's a little strange that we do not check super immediately after 
> > allocation.
> > How about this:
> > 
> >  static int discover_arenas(struct btt *btt)
> >  {
> >         int ret = 0;
> >         struct arena_info *arena;
> > -       struct btt_sb *super;
> >         size_t remaining = btt->rawsize;
> >         u64 cur_nlba = 0;
> >         size_t cur_off = 0;
> >         int num_arenas = 0;
> >  
> > -       super = kzalloc(sizeof(*super), GFP_KERNEL);
> > +       struct btt_sb *super __free(kfree) = 
> > +               kzalloc(sizeof(*super), GFP_KERNEL);
> >         if (!super)
> >                 return -ENOMEM;
> >  
> >         while (remaining) {
> >  
> 
> That's fine by me

I will resend a new patch soon, thanks!

Regards,
Dinghao

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