The quilt patch titled
Subject: mm: remove 'First tail page' members from struct page
has been removed from the -mm tree. Its filename was
mm-remove-first-tail-page-members-from-struct-page.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Subject: mm: remove 'First tail page' members from struct page
Date: Wed, 11 Jan 2023 14:29:08 +0000
All former users now use the folio equivalents, so remove them from the
definition of struct page.
Link: https://lkml.kernel.org/r/20230111142915.1001531-23-willy@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- a/include/linux/mm_types.h~mm-remove-first-tail-page-members-from-struct-page
+++ a/include/linux/mm_types.h
@@ -140,16 +140,6 @@ struct page {
};
struct { /* Tail pages of compound page */
unsigned long compound_head; /* Bit zero is set */
-
- /* First tail page only */
- unsigned char compound_dtor;
- unsigned char compound_order;
- atomic_t compound_mapcount;
- atomic_t subpages_mapcount;
- atomic_t compound_pincount;
-#ifdef CONFIG_64BIT
- unsigned int compound_nr; /* 1 << compound_order */
-#endif
};
struct { /* Second tail page of transparent huge page */
unsigned long _compound_pad_1; /* compound_head */
@@ -401,14 +391,6 @@ FOLIO_MATCH(memcg_data, memcg_data);
offsetof(struct page, pg) + sizeof(struct page))
FOLIO_MATCH(flags, _flags_1);
FOLIO_MATCH(compound_head, _head_1);
-FOLIO_MATCH(compound_dtor, _folio_dtor);
-FOLIO_MATCH(compound_order, _folio_order);
-FOLIO_MATCH(compound_mapcount, _entire_mapcount);
-FOLIO_MATCH(subpages_mapcount, _nr_pages_mapped);
-FOLIO_MATCH(compound_pincount, _pincount);
-#ifdef CONFIG_64BIT
-FOLIO_MATCH(compound_nr, _folio_nr_pages);
-#endif
#undef FOLIO_MATCH
#define FOLIO_MATCH(pg, fl) \
static_assert(offsetof(struct folio, fl) == \
--- a/kernel/crash_core.c~mm-remove-first-tail-page-members-from-struct-page
+++ a/kernel/crash_core.c
@@ -455,8 +455,8 @@ static int __init crash_save_vmcoreinfo_
VMCOREINFO_OFFSET(page, lru);
VMCOREINFO_OFFSET(page, _mapcount);
VMCOREINFO_OFFSET(page, private);
- VMCOREINFO_OFFSET(page, compound_dtor);
- VMCOREINFO_OFFSET(page, compound_order);
+ VMCOREINFO_OFFSET(folio, _folio_dtor);
+ VMCOREINFO_OFFSET(folio, _folio_order);
VMCOREINFO_OFFSET(page, compound_head);
VMCOREINFO_OFFSET(pglist_data, node_zones);
VMCOREINFO_OFFSET(pglist_data, nr_zones);
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxx are
