On Wed, 12 Sep 2007, Mel Gorman wrote:

quoted text
>  /*
> + * This struct contains information about a zone in a zonelist. It is stored
> + * here to avoid dereferences into large structures and lookups of tables
> + */
> +struct zoneref {
> +	struct zone *zone;	/* Pointer to actual zone */
> +	int zone_idx;		/* zone_idx(zoneref->zone) */
> +};


Well the structure is going to be 12 bytes wide. Since pointers have to be 
aligned to 8 bytes we will effectively have to use 16 bytes anyways. There 
is no additional memory use if we would be adding another 4 bytes.

But lets get this merged. We can sort this out later. Too many 
oscillations already.
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