mm/vmscan.c: minor cleanup for kswapd

	bool pgdat_is_balanced = false;

	int i;

	int end_zone = 0;	/* Inclusive.  0 = ZONE_DMA */

	unsigned long total_scanned;

	struct reclaim_state *reclaim_state = current->reclaim_state;

	unsigned long nr_soft_reclaimed;

	unsigned long nr_soft_scanned;

		.gfp_mask = sc.gfp_mask,

	};

loop_again:

	total_scanned = 0;

	sc.priority = DEF_PRIORITY;

	sc.nr_reclaimed = 0;

	sc.may_writepage = !laptop_mode;

							order, sc.gfp_mask,

							&nr_soft_scanned);

			sc.nr_reclaimed += nr_soft_reclaimed;

			total_scanned += nr_soft_scanned;

			/*

			 * We put equal pressure on every zone, unless

				reclaim_state->reclaimed_slab = 0;

				nr_slab = shrink_slab(&shrink, sc.nr_scanned, lru_pages);

				sc.nr_reclaimed += reclaim_state->reclaimed_slab;

				total_scanned += sc.nr_scanned;

				if (nr_slab == 0 && !zone_reclaimable(zone))

					zone->all_unreclaimable = 1;