On Sun, Aug 23, 2015 at 10:17:51AM +0200, Ingo Molnar wrote:
> +static u64 vmap_info_gen;
> +static u64 vmap_info_cache_gen;
> +void get_vmalloc_info(struct vmalloc_info *vmi)
> +{
> + u64 gen = READ_ONCE(vmap_info_gen);
> +
> + /*
> + * If the generation counter of the cache matches that of
> + * the vmalloc generation counter then return the cache:
> + */
> + if (READ_ONCE(vmap_info_cache_gen) == gen) {
Why are those things u64? It has the obvious down-side that you still
get split loads on 32bit machines.
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxx. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>