[PATCH] A code cleanup change

[PATCH] A code cleanup change

[Rajagopal Ananthanarayanan]

A simple change to get rid of a few magic numbers.
Not included in the patch, one could also use a simple array
for the triplet page_{min,low,high} with the same PAGE_{MIN,LOW,HIGH} index
definitions. The switch in __alloc_pages_limit will be
gone; other places will have to be modified, but
won't incur any extra cost.

Patch against test9-pre7:

==================
--- ./mm/page_alloc.c.orig      Tue Sep 26 13:55:48 2000
+++ ./mm/page_alloc.c   Tue Sep 26 13:56:41 2000
@@ -258,13 +258,13 @@
                 */
                switch (limit) {
                        default:
-                       case 0:
+                       case PAGES_MIN:
                                water_mark = z->pages_min;
                                break;
-                       case 1:
+                       case PAGES_LOW:
                                water_mark = z->pages_low;
                                break;
-                       case 2:
+                       case PAGES_HIGH:
                                water_mark = z->pages_high;
                }
 
=====================
-- 
--------------------------------------------------------------------------
Rajagopal Ananthanarayanan ("ananth")
Member Technical Staff, SGI.
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