Re: [PATCH] zsmalloc: consider ZS_ALMOST_FULL as migrate source

[Sergey Senozhatsky]

On (07/10/15 10:32), Minchan Kim wrote:
>  static struct page *isolate_source_page(struct size_class *class)
>  {
>  	struct page *page;
> +	int i;
> +	bool found = false;
>  

why use 'bool found'? just return `page', which will be either NULL
or !NULL?

	-ss

> -	page = class->fullness_list[ZS_ALMOST_EMPTY];
> -	if (page)
> -		remove_zspage(page, class, ZS_ALMOST_EMPTY);
> +	for (i = ZS_ALMOST_EMPTY; i >= ZS_ALMOST_FULL; i--) {
> +		page = class->fullness_list[i];
> +		if (!page)
> +			continue;
>  
> -	return page;
> +		remove_zspage(page, class, i);
> +		found = true;
> +		break;
> +	}
> +
> +	return found ? page : NULL;
>  }

	-ss
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