Re: [PATCH v3 10/16] zsmalloc: factor page chain functionality out

[Sergey Senozhatsky]

Hello,

On (03/30/16 16:12), Minchan Kim wrote:
> @@ -1421,7 +1434,6 @@ static unsigned long obj_malloc(struct size_class *class,
>  	unsigned long m_offset;
>  	void *vaddr;
>  
> -	handle |= OBJ_ALLOCATED_TAG;

a nitpick, why did you replace this ALLOCATED_TAG assignment
with 2 'handle | OBJ_ALLOCATED_TAG'?

	-ss

>  	obj = get_freeobj(first_page);
>  	objidx_to_page_and_offset(class, first_page, obj,
>  				&m_page, &m_offset);
> @@ -1431,10 +1443,10 @@ static unsigned long obj_malloc(struct size_class *class,
>  	set_freeobj(first_page, link->next >> OBJ_ALLOCATED_TAG);
>  	if (!class->huge)
>  		/* record handle in the header of allocated chunk */
> -		link->handle = handle;
> +		link->handle = handle | OBJ_ALLOCATED_TAG;
>  	else
>  		/* record handle in first_page->private */
> -		set_page_private(first_page, handle);
> +		set_page_private(first_page, handle | OBJ_ALLOCATED_TAG);
>  	kunmap_atomic(vaddr);
>  	mod_zspage_inuse(first_page, 1);
>  	zs_stat_inc(class, OBJ_USED, 1);