On 8/12/15 7:24 AM, Andrew Morton wrote:
On Mon, 10 Aug 2015 19:28:21 +0800 Wanpeng Li <wanpeng.li@xxxxxxxxxxx> wrote:
Introduce put_hwpoison_page to put refcount for memory
error handling.
...
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -922,6 +922,27 @@ int get_hwpoison_page(struct page *page)
}
EXPORT_SYMBOL_GPL(get_hwpoison_page);
+/**
+ * put_hwpoison_page() - Put refcount for memory error handling:
+ * @page: raw error page (hit by memory error)
+ */
+void put_hwpoison_page(struct page *page)
+{
+ struct page *head = compound_head(page);
+
+ if (PageHuge(head)) {
+ put_page(head);
+ return;
+ }
+
+ if (PageTransHuge(head))
+ if (page != head)
+ put_page(head);
+
+ put_page(page);
+}
+EXPORT_SYMBOL_GPL(put_hwpoison_page);
I don't believe the export is needed?
Indeed, thanks for your fix. :-)
Regards,
Wanpeng Li
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