Re: [PATCH v2] mm/zsmalloc: simplify zs_max_alloc_size handling

From: Minchan Kim
Date: Sun Jul 02 2017 - 22:14:07 EST

On Fri, Jun 30, 2017 at 01:48:59PM +0200, Jerome Marchand wrote:
> Commit 40f9fb8cffc6 ("mm/zsmalloc: support allocating obj with size of
> ZS_MAX_ALLOC_SIZE") fixes a size calculation error that prevented
> zsmalloc to allocate an object of the maximal size
> (ZS_MAX_ALLOC_SIZE). I think however the fix is unneededly
> complicated.
> This patch replaces the dynamic calculation of zs_size_classes at init
> time by a compile time calculation that uses the DIV_ROUND_UP() macro
> already used in get_size_class_index().
> Signed-off-by: Jerome Marchand <jmarchan@xxxxxxxxxx>
Acked-by: Minchan Kim <minchan@xxxxxxxxxx>