+ mm-convert-pmd_ptlock_init-to-use-ptdescs.patch added to mm-unstable branch

+ mm-convert-pmd_ptlock_init-to-use-ptdescs.patch added to mm-unstable branch

[Andrew Morton]

The patch titled
     Subject: mm: convert pmd_ptlock_init() to use ptdescs
has been added to the -mm mm-unstable branch.  Its filename is
     mm-convert-pmd_ptlock_init-to-use-ptdescs.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-convert-pmd_ptlock_init-to-use-ptdescs.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: "Vishal Moola (Oracle)" <vishal.moola@gmail.com>
Subject: mm: convert pmd_ptlock_init() to use ptdescs
Date: Mon, 31 Jul 2023 10:03:08 -0700

This removes some direct accesses to struct page, working towards
splitting out struct ptdesc from struct page.

Link: https://lkml.kernel.org/r/20230731170332.69404-8-vishal.moola@gmail.com
Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Acked-by: Mike Rapoport (IBM) <rppt@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Claudio Imbrenda <imbrenda@linux.ibm.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Guo Ren <guoren@kernel.org>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Palmer Dabbelt <palmer@rivosinc.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 include/linux/mm.h |   10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

--- a/include/linux/mm.h~mm-convert-pmd_ptlock_init-to-use-ptdescs
+++ a/include/linux/mm.h
@@ -2987,12 +2987,12 @@ static inline spinlock_t *pmd_lockptr(st
 	return ptlock_ptr(pmd_ptdesc(pmd));
 }
 
-static inline bool pmd_ptlock_init(struct page *page)
+static inline bool pmd_ptlock_init(struct ptdesc *ptdesc)
 {
 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
-	page->pmd_huge_pte = NULL;
+	ptdesc->pmd_huge_pte = NULL;
 #endif
-	return ptlock_init(page);
+	return ptlock_init(ptdesc_page(ptdesc));
 }
 
 static inline void pmd_ptlock_free(struct page *page)
@@ -3012,7 +3012,7 @@ static inline spinlock_t *pmd_lockptr(st
 	return &mm->page_table_lock;
 }
 
-static inline bool pmd_ptlock_init(struct page *page) { return true; }
+static inline bool pmd_ptlock_init(struct ptdesc *ptdesc) { return true; }
 static inline void pmd_ptlock_free(struct page *page) {}
 
 #define pmd_huge_pte(mm, pmd) ((mm)->pmd_huge_pte)
@@ -3028,7 +3028,7 @@ static inline spinlock_t *pmd_lock(struc
 
 static inline bool pgtable_pmd_page_ctor(struct page *page)
 {
-	if (!pmd_ptlock_init(page))
+	if (!pmd_ptlock_init(page_ptdesc(page)))
 		return false;
 	__SetPageTable(page);
 	inc_lruvec_page_state(page, NR_PAGETABLE);
_

Patches currently in -mm which might be from vishal.moola@gmail.com are

mm-add-page_type_op-folio-functions.patch
pgtable-create-struct-ptdesc.patch
mm-add-utility-functions-for-ptdesc.patch
mm-convert-pmd_pgtable_page-callers-to-use-pmd_ptdesc.patch
mm-convert-ptlock_alloc-to-use-ptdescs.patch
mm-convert-ptlock_ptr-to-use-ptdescs.patch
mm-convert-pmd_ptlock_init-to-use-ptdescs.patch
mm-convert-ptlock_init-to-use-ptdescs.patch
mm-convert-pmd_ptlock_free-to-use-ptdescs.patch
mm-convert-ptlock_free-to-use-ptdescs.patch
mm-create-ptdesc-equivalents-for-pgtable_ptepmd_page_ctordtor.patch
powerpc-convert-various-functions-to-use-ptdescs.patch
x86-convert-various-functions-to-use-ptdescs.patch
s390-convert-various-pgalloc-functions-to-use-ptdescs.patch
mm-remove-page-table-members-from-struct-page.patch
pgalloc-convert-various-functions-to-use-ptdescs.patch
arm-convert-various-functions-to-use-ptdescs.patch
arm64-convert-various-functions-to-use-ptdescs.patch
csky-convert-__pte_free_tlb-to-use-ptdescs.patch
hexagon-convert-__pte_free_tlb-to-use-ptdescs.patch
loongarch-convert-various-functions-to-use-ptdescs.patch
m68k-convert-various-functions-to-use-ptdescs.patch
mips-convert-various-functions-to-use-ptdescs.patch
nios2-convert-__pte_free_tlb-to-use-ptdescs.patch
openrisc-convert-__pte_free_tlb-to-use-ptdescs.patch
riscv-convert-alloc_pmd-pte_late-to-use-ptdescs.patch
sh-convert-pte_free_tlb-to-use-ptdescs.patch
sparc64-convert-various-functions-to-use-ptdescs.patch
sparc-convert-pgtable_pte_page_ctor-dtor-to-ptdesc-equivalents.patch
um-convert-pmd-pte_free_tlb-to-use-ptdescs.patch
mm-remove-pgtable_pmd-pte_page_ctor-dtor-wrappers.patch