The initial idea comes from Cong Wang. We're running out of memory
while calling function show_free_areas(). So it would be unsafe
to allocate more memory from either stack or heap. The patche adds
more comments to address that.
Signed-off-by: Gavin Shan <shangw@xxxxxxxxxxxxxxxxxx>
---
mm/page_alloc.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 4403009..280c13b 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2762,6 +2762,9 @@ out:
* memory on each free list with the exception of the first item on the list.
* Suppresses nodes that are not allowed by current's cpuset if
* SHOW_MEM_FILTER_NODES is passed.
+ *
+ * We're running out of memory while calling the function. So don't allocate
+ * more memory from either stack or heap.
*/
void show_free_areas(unsigned int filter)
{
--
1.7.9.5
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