+ m68k-mm-motorola-specify-pmd_page-type.patch added to mm-unstable branch

[Andrew Morton <akpm@linux-foundation.org>]

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@gmail.com>
Subject: m68k/mm/motorola: specify pmd_page() type
Date: Thu, 12 Jan 2023 12:39:30 +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/ad6be2821bbd6af10966b3704568ff458b270d9c.1673526881.git.lstoakes@gmail.com
Signed-off-by: Lorenzo Stoakes <lstoakes@gmail.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Joel Fernandes (Google) <joel@joelfernandes.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mike Rapoport (IBM) <rppt@kernel.org>
Cc: William Kucharski <william.kucharski@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 arch/m68k/include/asm/motorola_pgtable.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- 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@gmail.com are

mm-vmalloc-correct-use-of-__gfp_nowarn-mask-in-__vmalloc_area_node.patch
selftest-vm-add-mremap-expand-merge-offset-test.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