diff mbox series

[v1,09/18] mm/memory-failure: use folio_mapcount() in hwpoison_user_mappings()

Message ID 20240409192301.907377-10-david@redhat.com (mailing list archive)
State New, archived
Headers show
Series mm: mapcount for large folios + page_mapcount() cleanups | expand

Commit Message

David Hildenbrand April 9, 2024, 7:22 p.m. UTC 
We want to limit the use of page_mapcount() to the places where it is
absolutely necessary. We can only unmap full folios; page_mapped(),
which we check here, is translated to folio_mapped() -- based on
folio_mapcount(). So let's print the folio mapcount instead.

Signed-off-by: David Hildenbrand <david@redhat.com>
---
 mm/memory-failure.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 88359a185c5f..ee2f4b8905ef 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -1628,8 +1628,8 @@  static bool hwpoison_user_mappings(struct page *p, unsigned long pfn,
 
 	unmap_success = !page_mapped(p);
 	if (!unmap_success)
-		pr_err("%#lx: failed to unmap page (mapcount=%d)\n",
-		       pfn, page_mapcount(p));
+		pr_err("%#lx: failed to unmap page (folio mapcount=%d)\n",
+		       pfn, folio_mapcount(page_folio(p)));
 
 	/*
 	 * try_to_unmap() might put mlocked page in lru cache, so call