---

yaml --- r: 2823 b: refs/heads/master c: b7c84c6 h: refs/heads/master i: 2821: 567d804 2819: 1359877 2815: 17249d3 v: v3
git-mirror · Jun 23, 2005 · f2fad69 · f2fad69
1 parent b9f509f
commit f2fad69
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Showing 2 changed files with 10 additions and 3 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: a4936044001694f033fe4ea94d6034d51a6b465c
+refs/heads/master: b7c84c6ada2be942eca6722edb2cfaad412cd5de
diff --git a/trunk/mm/page_alloc.c b/trunk/mm/page_alloc.c
@@ -1742,10 +1742,17 @@ inline void setup_pageset(struct per_cpu_pageset *p, unsigned long batch)
  * with interrupts disabled.
  *
  * Some NUMA counter updates may also be caught by the boot pagesets.
- * These will be discarded when bootup is complete.
+ *
+ * The boot_pagesets must be kept even after bootup is complete for
+ * unused processors and/or zones. They do play a role for bootstrapping
+ * hotplugged processors.
+ *
+ * zoneinfo_show() and maybe other functions do
+ * not check if the processor is online before following the pageset pointer.
+ * Other parts of the kernel may not check if the zone is available.
  */
 static struct per_cpu_pageset
-	boot_pageset[NR_CPUS] __initdata;
+	boot_pageset[NR_CPUS];
 
 /*
  * Dynamically allocate memory for the