RE: [RFC] genalloc:add an gen_pool_alloc_align func to genalloc

[Zhao Qiang]

> -----Original Message-----
> From: Wood Scott-B07421
> Sent: Friday, July 10, 2015 6:20 AM
> To: Zhao Qiang-B45475
> Cc: lauraa@xxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; linuxppc-
> dev@xxxxxxxxxxxxxxxx; akpm@xxxxxxxxxxxxxxxxxxxx; olof@xxxxxxxxx;
> catalin.marinas@xxxxxxx; Xie Xiaobo-R63061
> Subject: Re: [RFC] genalloc:add an gen_pool_alloc_align func to genalloc
> 
> On Thu, 2015-07-09 at 15:47 +0800, Zhao Qiang wrote:
> > @@ -541,13 +562,14 @@ EXPORT_SYMBOL(gen_pool_first_fit_order_align);
> >   * which we can allocate the memory.
> >   */
> >  unsigned long gen_pool_best_fit(unsigned long *map, unsigned long size,
> > -             unsigned long start, unsigned int nr, void *data)
> > +                             unsigned long start, unsigned int nr,
> > +                             void *data, unsigned long align_mask)
> >  {
> >       unsigned long start_bit = size;
> >       unsigned long len = size + 1;
> >       unsigned long index;
> >
> > -     index = bitmap_find_next_zero_area(map, size, start, nr, 0);
> > +     index = bitmap_find_next_zero_area(map, size, start, nr,
> align_mask);
> >
> >       while (index < size) {
> >               int next_bit = find_next_bit(map, size, index + nr);
> 
> What about the other call to bitmap_find_next_zero_area()?

All others will pass the align_mask to bitmap_find_next_zero_area.

> 
> -Scott