mm: remove page table members from struct page

The page table members are now split out into their own ptdesc struct.
Remove them from struct page.

Link: https://lkml.kernel.org/r/20230807230513.102486-16-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>

diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index c57e940e60d01021625ffcfebbc2d2460ea59d04..369b7fd35d03f4ebcf038d451f950d37b9f11ef3 100644 (file)
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -141,24 +141,6 @@ struct page {
                struct {        /* Tail pages of compound page */
                        unsigned long compound_head;    /* Bit zero is set */
                };
-               struct {        /* Page table pages */
-                       unsigned long _pt_pad_1;        /* compound_head */
-                       pgtable_t pmd_huge_pte; /* protected by page->ptl */
-                       /*
-                        * A PTE page table page might be freed by use of
-                        * rcu_head: which overlays those two fields above.
-                        */
-                       unsigned long _pt_pad_2;        /* mapping */
-                       union {
-                               struct mm_struct *pt_mm; /* x86 pgds only */
-                               atomic_t pt_frag_refcount; /* powerpc */
-                       };
-#if ALLOC_SPLIT_PTLOCKS
-                       spinlock_t *ptl;
-#else
-                       spinlock_t ptl;
-#endif
-               };
                struct {        /* ZONE_DEVICE pages */
                        /** @pgmap: Points to the hosting device page map. */
                        struct dev_pagemap *pgmap;
@@ -454,10 +436,7 @@ struct ptdesc {
 TABLE_MATCH(flags, __page_flags);
 TABLE_MATCH(compound_head, pt_list);
 TABLE_MATCH(compound_head, _pt_pad_1);
-TABLE_MATCH(pmd_huge_pte, pmd_huge_pte);
 TABLE_MATCH(mapping, __page_mapping);
-TABLE_MATCH(pt_mm, pt_mm);
-TABLE_MATCH(ptl, ptl);
 TABLE_MATCH(rcu_head, pt_rcu_head);
 TABLE_MATCH(page_type, __page_type);
 TABLE_MATCH(_refcount, _refcount);