Re: [PATCH 3/3] mm: remove page_mapped()

[Andrew Morton]

On Mon, 27 Apr 2026 13:43:16 +0200 "David Hildenbrand (Arm)" <david@xxxxxxxxxx> wrote:

> Let's replace the last user of page_mapped() by folio_mapped() so we
> can get rid of page_mapped().
> 
> Replace the remaining occurrences of page_mapped() in rmap documentation
> by folio_mapped().

This broke Breno's "mm/memory-failure: add panic option for
unrecoverable pages"
(https://lore.kernel.org/20260424-ecc_panic-v5-2-a35f4b50425c@xxxxxxxxxx),
which added a new page_mapped() call.  I made the below adjustment to
Breno's patch:

--- a/mm/memory-failure.c~mm-memory-failure-add-panic-option-for-unrecoverable-pages-fix
+++ a/mm/memory-failure.c
@@ -1353,7 +1353,7 @@ static bool panic_on_unrecoverable_mf(un
 		cpu_relax();
 		return page_count(p) == 0 &&
 		       !PageLRU(p) &&
-		       !page_mapped(p) &&
+		       !folio_mapped(page_folio(p)) &&
 		       !page_folio(p)->mapping &&
 		       !is_free_buddy_page(p);
 	default:
_