[mm-unstable,v8,15/31] mm: Remove page table members from struct page

Commit Message

Vishal Moola July 31, 2023, 5:03 p.m. UTC

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

Signed-off-by: Vishal Moola (Oracle) <[e-mail]>
Acked-by: Mike Rapoport (IBM) <[e-mail]>
---
 include/linux/mm_types.h | 18 ------------------
 include/linux/pgtable.h  |  3 ---
 2 files changed, 21 deletions(-)

Patch

diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index da538ff68953..aae6af098031 100644
--- 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;
diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h
index 250fdeba68f3..1a984c300d45 100644
--- a/include/linux/pgtable.h
+++ b/include/linux/pgtable.h
@@ -1051,10 +1051,7 @@  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);