On 03/22/2013 05:54 PM, Jianguo Wu wrote:
zone->wait_table may be allocated from bootmem, it can not be freed.
Cc: Andrew Morton<akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Wen Congyang<wency@xxxxxxxxxxxxxx>
Cc: Tang Chen<tangchen@xxxxxxxxxxxxxx>
Cc: Jiang Liu<jiang.liu@xxxxxxxxxx>
Cc: linux-mm@xxxxxxxxx
Signed-off-by: Jianguo Wu<wujianguo@xxxxxxxxxx>
---
mm/memory_hotplug.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 07b6263..91ed7cd 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1779,7 +1779,11 @@ void try_offline_node(int nid)
for (i = 0; i< MAX_NR_ZONES; i++) {
struct zone *zone = pgdat->node_zones + i;
- if (zone->wait_table)
+ /*
+ * wait_table may be allocated from boot memory,
+ * here only free if it's allocated by vmalloc.
+ */
+ if (is_vmalloc_addr(zone->wait_table))
vfree(zone->wait_table);
Reviewed-by: Tang Chen <tangchen@xxxxxxxxxxxxxx>
FYI, I'm trying add a flag member into memblock to mark memory whose
life cycle is the same as a node. I think maybe this flag could be used
to free this kind of memory from bootmem.
Thanks. :)
}
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