The comment describing the usage of zone_table[] assumes the existence
of an unsigned char page->zone field from the original implementation
of page->zone size reduction. This patch corrects the comment to
accurately describe the lookup mechanism used by page_zone() and also
to mention explicitly the sole user of the table, page_zone().
Against 2.5.19.
Cheers,
Bill
===== mm/page_alloc.c 1.64 vs edited =====
--- 1.64/mm/page_alloc.c Sun Jun 2 14:51:50 2002
+++ edited/mm/page_alloc.c Sun Jun 2 14:55:49 2002
@@ -31,7 +31,10 @@
LIST_HEAD(inactive_list);
pg_data_t *pgdat_list;
-/* Used to look up the address of the struct zone encoded in page->zone */
+/*
+ * Used by page_zone() to look up the address of the struct zone whose
+ * id is encoded in the upper bits of page->flags
+ */
zone_t *zone_table[MAX_NR_ZONES*MAX_NR_NODES];
EXPORT_SYMBOL(zone_table);
-
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This archive was generated by hypermail 2b29 : Fri Jun 07 2002 - 22:00:13 EST