diff mbox series

[mm-unstable,v9,15/31] mm: remove page table members from struct page

Message ID 20230807230513.102486-16-vishal.moola@gmail.com
State Not Applicable
Headers show
Series Split ptdesc from struct page | expand

Commit Message

Vishal Moola Aug. 7, 2023, 11:04 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) <vishal.moola@gmail.com>
Acked-by: Mike Rapoport (IBM) <rppt@kernel.org>
---
 include/linux/mm_types.h | 21 ---------------------
 1 file changed, 21 deletions(-)
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Patch

diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index ea34b22b4cbf..f5ba5b0bc836 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;
@@ -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);