linux-kernel - [patch 1/2] fix call to alloc_bootmem after bootmem has been freed

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Message-ID: <20061115193238.4d23900c@localhost>
Date:	Wed, 15 Nov 2006 19:32:38 +0100
From:	Christian Krafft <krafft@...ibm.com>
To:	Christian Krafft <krafft@...ibm.com>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: [patch 1/2] fix call to alloc_bootmem after bootmem has been freed

In some cases it might happen, that alloc_bootmem is beeing called
after bootmem pages have been freed. This is, because the condition
SYSTEM_BOOTING is still true after bootmem has been freed.

Signed-off-by: Christian Krafft <krafft@...ibm.com>

Index: linux/mm/page_alloc.c
===================================================================
--- linux.orig/mm/page_alloc.c
+++ linux/mm/page_alloc.c
@@ -1931,7 +1931,7 @@ int zone_wait_table_init(struct zone *zo
 	alloc_size = zone->wait_table_hash_nr_entries
 					* sizeof(wait_queue_head_t);
 
- 	if (system_state == SYSTEM_BOOTING) {
+	if (!slab_is_available()) {
 		zone->wait_table = (wait_queue_head_t *)
 			alloc_bootmem_node(pgdat, alloc_size);
 	} else {
-
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