The patch titled
Subject: m68k/mm/motorola: specify pmd_page() type
has been added to the -mm mm-unstable branch. Its filename is
m68k-mm-motorola-specify-pmd_page-type.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/m68k-mm-motorola-specify-pmd_page-type.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Lorenzo Stoakes <lstoakes@xxxxxxxxx>
Subject: m68k/mm/motorola: specify pmd_page() type
Date: Mon, 26 Dec 2022 08:44:21 +0000
Failing to specify a specific type here breaks anything that relies on the
type being explicitly known, such as page_folio().
Make explicit the type of null pointer returned here.
Link: https://lkml.kernel.org/r/4b59f47ff4cd89ff76a5b6edbef6e8e0b37046f1.1672043615.git.lstoakes@xxxxxxxxx
Signed-off-by: Lorenzo Stoakes <lstoakes@xxxxxxxxx>
Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Cc: Christian Brauner <brauner@xxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Joel Fernandes (Google) <joel@xxxxxxxxxxxxxxxxx>
Cc: Jonathan Corbet <corbet@xxxxxxx>
Cc: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Cc: Mike Rapoport <rppt@xxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Cc: William Kucharski <william.kucharski@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- a/arch/m68k/include/asm/motorola_pgtable.h~m68k-mm-motorola-specify-pmd_page-type
+++ a/arch/m68k/include/asm/motorola_pgtable.h
@@ -124,7 +124,7 @@ static inline void pud_set(pud_t *pudp,
* expects pmd_page() to exists, only to then DCE it all. Provide a dummy to
* make the compiler happy.
*/
-#define pmd_page(pmd) NULL
+#define pmd_page(pmd) ((struct page *)NULL)
#define pud_none(pud) (!pud_val(pud))
_
Patches currently in -mm which might be from lstoakes@xxxxxxxxx are
selftest-vm-add-mremap-expand-merge-offset-test.patch
mm-vmalloc-correct-use-of-__gfp_nowarn-mask-in-__vmalloc_area_node.patch
mm-pagevec-add-folio_batch_reinit.patch
mm-mlock-use-folios-and-a-folio-batch-internally.patch
m68k-mm-motorola-specify-pmd_page-type.patch
mm-mlock-update-the-interface-to-use-folios.patch
documentation-mm-update-references-to-__mlock_page-to-_folio.patch
