On Wed, Apr 05, 2017 at 03:52:49PM +0200, Michal Hocko wrote:
My code doesn't do that though. So I guess I have to sanitize. Does
this help? Please drop the "mm, memory_hotplug: get rid of zone/node
shrinking" patch.
---
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index acf2b5eb5ecb..2c5613d19eb6 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -750,6 +750,15 @@ int __ref online_pages(unsigned long pfn, unsigned long nr_pages, int online_typ
int ret;
struct memory_notify arg;
+ do {
+ if (pfn_valid(pfn))
+ break;
+ pfn++;
+ } while (--nr_pages > 0);
+
+ if (!nr_pages)
+ return -EINVAL;
+
nid = pfn_to_nid(pfn);
if (!allow_online_pfn_range(nid, pfn, nr_pages, online_type))
return -EINVAL;
Sorry, no change. Back to the oops in find_biggest_section_pfn().
--
Reza Arbab
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