+ mmhwpoisonhugetlbmemory_hotplug-hotremove-memory-section-with-hwpoisoned-hugepage-v8.patch added to mm-unstable branch

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

The patch titled
     Subject: mmhwpoisonhugetlbmemory_hotplug-hotremove-memory-section-with-hwpoisoned-hugepage-v8
has been added to the -mm mm-unstable branch.  Its filename is
     mmhwpoisonhugetlbmemory_hotplug-hotremove-memory-section-with-hwpoisoned-hugepage-v8.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mmhwpoisonhugetlbmemory_hotplug-hotremove-memory-section-with-hwpoisoned-hugepage-v8.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: Naoya Horiguchi <naoya.horiguchi@linux.dev>
Subject: mmhwpoisonhugetlbmemory_hotplug-hotremove-memory-section-with-hwpoisoned-hugepage-v8
Date: Tue, 25 Oct 2022 14:35:59 +0900

remove TestClearHPageMigratable and reduce to test and clear separately

Link: https://lkml.kernel.org/r/20221025053559.GA2104800@ik1-406-35019.vs.sakura.ne.jp
Signed-off-by: Naoya Horiguchi <naoya.horiguchi@linux.dev>
Reviewed-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Cc: David Hildenbrand <david@redhat.com>
Cc: Jane Chu <jane.chu@oracle.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: Yang Shi <shy828301@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---


--- a/include/linux/hugetlb.h~mmhwpoisonhugetlbmemory_hotplug-hotremove-memory-section-with-hwpoisoned-hugepage-v8
+++ a/include/linux/hugetlb.h
@@ -623,10 +623,6 @@ void folio_clear_hugetlb_##flname(struct
 	}							\
 static inline void ClearHPage##uname(struct page *page)		\
 	{ clear_bit(HPG_##flname, &(page->private)); }
-
-#define TESTCLEARHPAGEFLAG(uname, flname)			\
-static inline int TestClearHPage##uname(struct page *page)	\
-	{ return test_and_clear_bit(HPG_##flname, &(page->private)); }
 #else
 #define TESTHPAGEFLAG(uname, flname)				\
 static inline bool						\
@@ -648,10 +644,6 @@ folio_clear_hugetlb_##flname(struct foli
 	{ }							\
 static inline void ClearHPage##uname(struct page *page)		\
 	{ }
-
-#define TESTCLEARHPAGEFLAG(uname, flname)			\
-static inline int TestClearHPage##uname(struct page *page)	\
-	{ return 0; }
 #endif
 
 #define HPAGEFLAG(uname, flname)				\
@@ -664,7 +656,6 @@ static inline int TestClearHPage##uname(
  */
 HPAGEFLAG(RestoreReserve, restore_reserve)
 HPAGEFLAG(Migratable, migratable)
-	TESTCLEARHPAGEFLAG(Migratable, migratable)
 HPAGEFLAG(Temporary, temporary)
 HPAGEFLAG(Freed, freed)
 HPAGEFLAG(VmemmapOptimized, vmemmap_optimized)
--- a/mm/memory-failure.c~mmhwpoisonhugetlbmemory_hotplug-hotremove-memory-section-with-hwpoisoned-hugepage-v8
+++ a/mm/memory-failure.c
@@ -1823,8 +1823,10 @@ int __get_huge_page_for_hwpoison(unsigne
 	 * Clearing HPageMigratable for hwpoisoned hugepages to prevent them
 	 * from being migrated by memory hotremove.
 	 */
-	if (count_increased)
-		*migratable_cleared = TestClearHPageMigratable(head);
+	if (count_increased && HPageMigratable(head)) {
+		ClearHPageMigratable(head);
+		*migratable_cleared = true;
+	}
 
 	return ret;
 out:
_

Patches currently in -mm which might be from naoya.horiguchi@linux.dev are

mmhwpoisonhugetlbmemory_hotplug-hotremove-memory-section-with-hwpoisoned-hugepage-v8.patch