remove MARK_USED() macros

From: William Lee Irwin III (wli@holomorphy.com)
Date: Sun Jun 02 2002 - 17:31:44 EST


MARK_USED() only has two call sites within page_alloc.c and does not
effectively serve to clarify the code. This patch removes it in favor
of open-coding the __change_bit() at its call sites.

Against 2.5.19.

Cheers,
Bill

===== mm/page_alloc.c 1.69 vs edited =====
--- 1.69/mm/page_alloc.c Sun Jun 2 15:26:30 2002
+++ edited/mm/page_alloc.c Sun Jun 2 15:28:11 2002
@@ -153,9 +153,6 @@
         current->nr_local_pages++;
 }
 
-#define MARK_USED(index, order, area) \
- __change_bit((index) >> (1+(order)), (area)->map)
-
 static inline struct page * expand (zone_t *zone, struct page *page,
          unsigned long index, int low, int high, free_area_t * area)
 {
@@ -167,7 +164,7 @@
                 high--;
                 size >>= 1;
                 list_add(&(page)->list, &(area)->free_list);
- MARK_USED(index, high, area);
+ __change_bit(index >> (1+high), area->map);
                 index += size;
                 page += size;
         }
@@ -197,7 +194,7 @@
                         list_del(curr);
                         index = page - zone->zone_mem_map;
                         if (curr_order != MAX_ORDER-1)
- MARK_USED(index, curr_order, area);
+ __change_bit(index >> (1+curr_order), area->map);
                         zone->free_pages -= 1UL << order;
 
                         page = expand(zone, page, index, order, curr_order, area);
-
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