Re: [PATCH v1] zram: add size class equals check into recompression

[Sergey Senozhatsky <senozhatsky@chromium.org>]

On (22/10/25 09:49), Aleksey Romanov wrote:
> On Tue, Oct 25, 2022 at 11:04:40AM +0900, Sergey Senozhatsky wrote:
> > On (22/10/25 10:53), Sergey Senozhatsky wrote:
> > > > +unsigned int zs_get_class_size(struct zs_pool *pool, unsigned int size)
> > > > +{
> > > > +	struct size_class *class = pool->size_class[get_size_class_index(size)];
> > > > +
> > > > +	return class->size;
> > > > +}
> > > > +EXPORT_SYMBOL_GPL(zs_get_class_size);

I wonder if we want to return class->index instead of class->size?

Something like this (a sketch)

  Return: the index of the zsmalloc &size_class that hold objects of the
  provided size.

unsigned int zs_lookup_class_index(struct zs_pool *pool, unsigned int size)
{
        struct size_class *class = pool->size_class[get_size_class_index(size)];

        return class->index;
}