The quilt patch titled
Subject: mm: add folio_mc_copy()
has been removed from the -mm tree. Its filename was
mm-add-folio_mc_copy.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: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Subject: mm: add folio_mc_copy()
Date: Wed, 26 Jun 2024 16:53:24 +0800
Add a #MC variant of folio_copy() which uses copy_mc_highpage() to support
#MC handled during folio copy, it will be used in folio migration soon.
Link: https://lkml.kernel.org/r/20240626085328.608006-3-wangkefeng.wang@xxxxxxxxxx
Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Reviewed-by: Jane Chu <jane.chu@xxxxxxxxxx>
Reviewed-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Cc: Alistair Popple <apopple@xxxxxxxxxx>
Cc: Benjamin LaHaise <bcrl@xxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Jérôme Glisse <jglisse@xxxxxxxxxx>
Cc: Jiaqi Yan <jiaqiyan@xxxxxxxxxx>
Cc: Lance Yang <ioworker0@xxxxxxxxx>
Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: Muchun Song <muchun.song@xxxxxxxxx>
Cc: Naoya Horiguchi <nao.horiguchi@xxxxxxxxx>
Cc: Oscar Salvador <osalvador@xxxxxxx>
Cc: Tony Luck <tony.luck@xxxxxxxxx>
Cc: Vishal Moola (Oracle) <vishal.moola@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/mm.h | 1 +
mm/util.c | 17 +++++++++++++++++
2 files changed, 18 insertions(+)
--- a/include/linux/mm.h~mm-add-folio_mc_copy
+++ a/include/linux/mm.h
@@ -1291,6 +1291,7 @@ void put_pages_list(struct list_head *pa
void split_page(struct page *page, unsigned int order);
void folio_copy(struct folio *dst, struct folio *src);
+int folio_mc_copy(struct folio *dst, struct folio *src);
unsigned long nr_free_buffer_pages(void);
--- a/mm/util.c~mm-add-folio_mc_copy
+++ a/mm/util.c
@@ -828,6 +828,23 @@ void folio_copy(struct folio *dst, struc
}
EXPORT_SYMBOL(folio_copy);
+int folio_mc_copy(struct folio *dst, struct folio *src)
+{
+ long nr = folio_nr_pages(src);
+ long i = 0;
+
+ for (;;) {
+ if (copy_mc_highpage(folio_page(dst, i), folio_page(src, i)))
+ return -EHWPOISON;
+ if (++i == nr)
+ break;
+ cond_resched();
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(folio_mc_copy);
+
int sysctl_overcommit_memory __read_mostly = OVERCOMMIT_GUESS;
int sysctl_overcommit_ratio __read_mostly = 50;
unsigned long sysctl_overcommit_kbytes __read_mostly;
_
Patches currently in -mm which might be from wangkefeng.wang@xxxxxxxxxx are
