Re: [PATCH] mm/vmscan.c: use DIV_ROUND_UP for calculation of zone's balance_gap and correct comments.

[Rik van Riel]

On 05/19/2014 12:08 AM, Jianyu Zhan wrote:
> Currently, we use (zone->managed_pages + KSWAPD_ZONE_BALANCE_GAP_RATIO-1) /
> KSWAPD_ZONE_BALANCE_GAP_RATIO to avoid a zero gap value. It's better to
> use DIV_ROUND_UP macro for neater code and clear meaning.
> 
> Besides, the gap value is calculated against the per-zone "managed pages",
> not "present pages". This patch also corrects the comment and do some
> rephrasing.
> 
> Signed-off-by: Jianyu Zhan <nasa4836@xxxxxxxxx>

Acked-by: Rik van Riel <riel@xxxxxxxxxx>

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