1 files changed, 4 insertions, 1 deletions

diff --git a/mm/debug.c b/mm/debug.c
index 03c9a13f9f6a..f05b2d5d6481 100644
--- a/mm/debug.c
+++ b/mm/debug.c
@@ -79,9 +79,12 @@ static void dump_flags(unsigned long flags,
 void dump_page_badflags(struct page *page, const char *reason,
                 unsigned long badflags)
 {
-        pr_emerg("page:%p count:%d mapcount:%d mapping:%p index:%#lx\n",
+        pr_emerg("page:%p count:%d mapcount:%d mapping:%p index:%#lx",
                   page, atomic_read(&page->_count), page_mapcount(page),
                   page->mapping, page->index);
+        if (PageCompound(page))
+                pr_cont(" compound_mapcount: %d", compound_mapcount(page));
+        pr_cont("\n");
         BUILD_BUG_ON(ARRAY_SIZE(pageflag_names) != __NR_PAGEFLAGS);
         dump_flags(page->flags, pageflag_names, ARRAY_SIZE(pageflag_names));
         if (reason)