[PATCH v2 3/6] mm: Print head flags in dump_page

["Matthew Wilcox (Oracle)" <willy@infradead.org>]

Tail page flags contain very little useful information.  Print the head
page's flags instead.  While the flags will contain "head" for tail pages,
this should not be too confusing as the previous line starts with the
word "head:" and so the flags should be interpreted as belonging to
the head page.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
 mm/debug.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/debug.c b/mm/debug.c
index f35c1ae1a7a5..d2ffc926d8f5 100644
--- a/mm/debug.c
+++ b/mm/debug.c
@@ -162,7 +162,7 @@ void __dump_page(struct page *page, const char *reason)
 out_mapping:
 	BUILD_BUG_ON(ARRAY_SIZE(pageflag_names) != __NR_PAGEFLAGS + 1);
 
-	pr_warn("%sflags: %#lx(%pGp)%s\n", type, page->flags, &page->flags,
+	pr_warn("%sflags: %#lx(%pGp)%s\n", type, head->flags, &head->flags,
 		page_cma ? " CMA" : "");
 
 hex_only:
-- 
2.27.0