[PATCH 28/28] mm: remove the hugetlb field from struct page

["Matthew Wilcox (Oracle)" <willy@infradead.org>]

From: Sidhartha Kumar <sidhartha.kumar@oracle.com>

commit dad6a5eb5556(mm,hugetlb: use folio fields in second tail page)
added a transitional hugetlb field to struct page and struct folio to make
room for another int in the first tail of a compound page. Hugetlb folio
conversions have changed all page users of this field to use the fields
within the folio so struct page no longer needs this hugetlb specific
field.

Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
 include/linux/mm_types.h | 12 ------------
 1 file changed, 12 deletions(-)

diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index c464205cf7ea..9932a4cd5b42 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -141,14 +141,6 @@ struct page {
 		struct {	/* Tail pages of compound page */
 			unsigned long compound_head;	/* Bit zero is set */
 		};
-		struct {	/* Second tail page of hugetlb page */
-			unsigned long _hugetlb_pad_1;	/* compound_head */
-			void *hugetlb_subpool;
-			void *hugetlb_cgroup;
-			void *hugetlb_cgroup_rsvd;
-			void *hugetlb_hwpoison;
-			/* No more space on 32-bit: use third tail if more */
-		};
 		struct {	/* Page table pages */
 			unsigned long _pt_pad_1;	/* compound_head */
 			pgtable_t pmd_huge_pte; /* protected by page->ptl */
@@ -399,10 +391,6 @@ FOLIO_MATCH(compound_head, _head_1);
 			offsetof(struct page, pg) + 2 * sizeof(struct page))
 FOLIO_MATCH(flags, _flags_2);
 FOLIO_MATCH(compound_head, _head_2);
-FOLIO_MATCH(hugetlb_subpool, _hugetlb_subpool);
-FOLIO_MATCH(hugetlb_cgroup, _hugetlb_cgroup);
-FOLIO_MATCH(hugetlb_cgroup_rsvd, _hugetlb_cgroup_rsvd);
-FOLIO_MATCH(hugetlb_hwpoison, _hugetlb_hwpoison);
 #undef FOLIO_MATCH
 
 /*
-- 
2.35.1