On (03/11/16 16:30), Minchan Kim wrote:
> Every zspage in a size_class has same number of max objects so
> we could move it to a size_class.
>
> Signed-off-by: Minchan Kim <minchan@xxxxxxxxxx>
> ---
> mm/zsmalloc.c | 29 ++++++++++++++---------------
> 1 file changed, 14 insertions(+), 15 deletions(-)
>
> diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
> index b4fb11831acb..ca663c82c1fc 100644
> --- a/mm/zsmalloc.c
> +++ b/mm/zsmalloc.c
> @@ -32,8 +32,6 @@
> * page->freelist: points to the first free object in zspage.
> * Free objects are linked together using in-place
> * metadata.
> - * page->objects: maximum number of objects we can store in this
> - * zspage (class->zspage_order * PAGE_SIZE / class->size)
> * page->lru: links together first pages of various zspages.
> * Basically forming list of zspages in a fullness group.
> * page->mapping: class index and fullness group of the zspage
> @@ -211,6 +209,7 @@ struct size_class {
> * of ZS_ALIGN.
> */
> int size;
> + int objs_per_zspage;
> unsigned int index;
struct page ->objects "comes for free". now we don't use it, instead
every size_class grows by 4 bytes? is there any reason for this?
-ss
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