+ mm-hugetlb-convert-move_hugetlb_state-to-folios.patch added to mm-unstable branch

[Andrew Morton <akpm@linux-foundation.org>]

The patch titled
     Subject: mm/hugetlb: convert move_hugetlb_state() to folios
has been added to the -mm mm-unstable branch.  Its filename is
     mm-hugetlb-convert-move_hugetlb_state-to-folios.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-hugetlb-convert-move_hugetlb_state-to-folios.patch

This patch will later appear in the mm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Subject: mm/hugetlb: convert move_hugetlb_state() to folios
Date: Thu, 13 Oct 2022 20:13:03 -0700

Clean up unmap_and_move_huge_page() by converting move_hugetlb_state() to
take in folios.

Link: https://lkml.kernel.org/r/20221014031303.231740-10-sidhartha.kumar@oracle.com
Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Bui Quang Minh <minhquangbui99@gmail.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Mina Almasry <almasrymina@google.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 include/linux/hugetlb.h |    6 +++---
 mm/hugetlb.c            |   22 ++++++++++++----------
 mm/migrate.c            |    2 +-
 3 files changed, 16 insertions(+), 14 deletions(-)

--- a/include/linux/hugetlb.h~mm-hugetlb-convert-move_hugetlb_state-to-folios
+++ a/include/linux/hugetlb.h
@@ -186,7 +186,7 @@ int isolate_hugetlb(struct page *page, s
 int get_hwpoison_huge_page(struct page *page, bool *hugetlb);
 int get_huge_page_for_hwpoison(unsigned long pfn, int flags);
 void putback_active_hugepage(struct page *page);
-void move_hugetlb_state(struct page *oldpage, struct page *newpage, int reason);
+void move_hugetlb_state(struct folio *old_folio, struct folio *new_folio, int reason);
 void free_huge_page(struct page *page);
 void hugetlb_fix_reserve_counts(struct inode *inode);
 extern struct mutex *hugetlb_fault_mutex_table;
@@ -405,8 +405,8 @@ static inline void putback_active_hugepa
 {
 }
 
-static inline void move_hugetlb_state(struct page *oldpage,
-					struct page *newpage, int reason)
+static inline void move_hugetlb_state(struct folio *old_folio,
+					struct folio *new_folio, int reason)
 {
 }
 
--- a/mm/hugetlb.c~mm-hugetlb-convert-move_hugetlb_state-to-folios
+++ a/mm/hugetlb.c
@@ -7313,15 +7313,15 @@ void putback_active_hugepage(struct page
 	put_page(page);
 }
 
-void move_hugetlb_state(struct page *oldpage, struct page *newpage, int reason)
+void move_hugetlb_state(struct folio *old_folio, struct folio *new_folio, int reason)
 {
-	struct hstate *h = page_hstate(oldpage);
+	struct hstate *h = folio_hstate(old_folio);
 
-	hugetlb_cgroup_migrate(page_folio(oldpage), page_folio(newpage));
-	set_page_owner_migrate_reason(newpage, reason);
+	hugetlb_cgroup_migrate(old_folio, new_folio);
+	set_page_owner_migrate_reason(&new_folio->page, reason);
 
 	/*
-	 * transfer temporary state of the new huge page. This is
+	 * transfer temporary state of the new hugetlb folio. This is
 	 * reverse to other transitions because the newpage is going to
 	 * be final while the old one will be freed so it takes over
 	 * the temporary status.
@@ -7330,12 +7330,14 @@ void move_hugetlb_state(struct page *old
 	 * here as well otherwise the global surplus count will not match
 	 * the per-node's.
 	 */
-	if (HPageTemporary(newpage)) {
-		int old_nid = page_to_nid(oldpage);
-		int new_nid = page_to_nid(newpage);
+	if (folio_test_hugetlb_temporary(new_folio)) {
+		int old_nid = folio_nid(old_folio);
+		int new_nid = folio_nid(new_folio);
+
+
+		folio_set_hugetlb_temporary(old_folio);
+		folio_clear_hugetlb_temporary(new_folio);
 
-		SetHPageTemporary(oldpage);
-		ClearHPageTemporary(newpage);
 
 		/*
 		 * There is no need to transfer the per-node surplus state
--- a/mm/migrate.c~mm-hugetlb-convert-move_hugetlb_state-to-folios
+++ a/mm/migrate.c
@@ -1348,7 +1348,7 @@ put_anon:
 		put_anon_vma(anon_vma);
 
 	if (rc == MIGRATEPAGE_SUCCESS) {
-		move_hugetlb_state(hpage, new_hpage, reason);
+		move_hugetlb_state(src, dst, reason);
 		put_new_page = NULL;
 	}
 
_

Patches currently in -mm which might be from sidhartha.kumar@oracle.com are

mm-hugetlb_cgroup-convert-__set_hugetlb_cgroup-to-folios.patch
mm-hugetlb_cgroup-convert-hugetlb_cgroup_from_page-to-folios.patch
mm-hugetlb_cgroup-convert-set_hugetlb_cgroup-to-folios.patch
mm-hugetlb_cgroup-convert-hugetlb_cgroup_migrate-to-folios.patch
mm-hugetlb-convert-isolate_or_dissolve_huge_page-to-folios.patch
mm-hugetlb-convert-free_huge_page-to-folios.patch
mm-hugetlb_cgroup-convert-hugetlb_cgroup_uncharge_page-to-folios.patch
mm-hugeltb_cgroup-convert-hugetlb_cgroup_commit_charge-to-folios.patch
mm-hugetlb-convert-move_hugetlb_state-to-folios.patch