The patch titled
Subject: mm/hwpoison: move definitions of num_poisoned_pages_* to memory-failure.c
has been added to the -mm mm-unstable branch. Its filename is
mm-hwpoison-move-definitions-of-num_poisoned_pages_-to-memory-failurec.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-hwpoison-move-definitions-of-num_poisoned_pages_-to-memory-failurec.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@xxxxxxx>
Subject: mm/hwpoison: move definitions of num_poisoned_pages_* to memory-failure.c
Date: Mon, 24 Oct 2022 15:20:10 +0900
These interfaces will be used by drivers/base/memory.c by later patch, so
as a preparatory work move them to more common header file visible to the
file.
Link: https://lkml.kernel.org/r/20221024062012.1520887-3-naoya.horiguchi@xxxxxxxxx
Signed-off-by: Naoya Horiguchi <naoya.horiguchi@xxxxxxx>
Reviewed-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Jane Chu <jane.chu@xxxxxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Cc: Muchun Song <songmuchun@xxxxxxxxxxxxx>
Cc: Oscar Salvador <osalvador@xxxxxxx>
Cc: Yang Shi <shy828301@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/parisc/kernel/pdt.c | 3 +--
include/linux/mm.h | 5 +++++
include/linux/swapops.h | 24 ++----------------------
mm/memory-failure.c | 10 ++++++++++
4 files changed, 18 insertions(+), 24 deletions(-)
--- a/arch/parisc/kernel/pdt.c~mm-hwpoison-move-definitions-of-num_poisoned_pages_-to-memory-failurec
+++ a/arch/parisc/kernel/pdt.c
@@ -18,8 +18,7 @@
#include <linux/kthread.h>
#include <linux/initrd.h>
#include <linux/pgtable.h>
-#include <linux/swap.h>
-#include <linux/swapops.h>
+#include <linux/mm.h>
#include <asm/pdc.h>
#include <asm/pdcpat.h>
--- a/include/linux/mm.h~mm-hwpoison-move-definitions-of-num_poisoned_pages_-to-memory-failurec
+++ a/include/linux/mm.h
@@ -3248,12 +3248,17 @@ extern int soft_offline_page(unsigned lo
#ifdef CONFIG_MEMORY_FAILURE
extern int __get_huge_page_for_hwpoison(unsigned long pfn, int flags,
bool *migratable_cleared);
+extern void num_poisoned_pages_inc(void);
#else
static inline int __get_huge_page_for_hwpoison(unsigned long pfn, int flags,
bool *migratable_cleared)
{
return 0;
}
+
+static inline void num_poisoned_pages_inc(void)
+{
+}
#endif
#ifndef arch_memory_failure
--- a/include/linux/swapops.h~mm-hwpoison-move-definitions-of-num_poisoned_pages_-to-memory-failurec
+++ a/include/linux/swapops.h
@@ -581,8 +581,6 @@ static inline int is_pmd_migration_entry
#ifdef CONFIG_MEMORY_FAILURE
-extern atomic_long_t num_poisoned_pages __read_mostly;
-
/*
* Support for hardware poisoned pages
*/
@@ -597,17 +595,7 @@ static inline int is_hwpoison_entry(swp_
return swp_type(entry) == SWP_HWPOISON;
}
-static inline void num_poisoned_pages_inc(void)
-{
- atomic_long_inc(&num_poisoned_pages);
-}
-
-static inline void num_poisoned_pages_sub(long i)
-{
- atomic_long_sub(i, &num_poisoned_pages);
-}
-
-#else /* CONFIG_MEMORY_FAILURE */
+#else
static inline swp_entry_t make_hwpoison_entry(struct page *page)
{
@@ -618,15 +606,7 @@ static inline int is_hwpoison_entry(swp_
{
return 0;
}
-
-static inline void num_poisoned_pages_inc(void)
-{
-}
-
-static inline void num_poisoned_pages_sub(long i)
-{
-}
-#endif /* CONFIG_MEMORY_FAILURE */
+#endif
static inline int non_swap_entry(swp_entry_t entry)
{
--- a/mm/memory-failure.c~mm-hwpoison-move-definitions-of-num_poisoned_pages_-to-memory-failurec
+++ a/mm/memory-failure.c
@@ -74,6 +74,16 @@ atomic_long_t num_poisoned_pages __read_
static bool hw_memory_failure __read_mostly = false;
+inline void num_poisoned_pages_inc(void)
+{
+ atomic_long_inc(&num_poisoned_pages);
+}
+
+static inline void num_poisoned_pages_sub(long i)
+{
+ atomic_long_sub(i, &num_poisoned_pages);
+}
+
/*
* Return values:
* 1: the page is dissolved (if needed) and taken off from buddy,
_
Patches currently in -mm which might be from naoya.horiguchi@xxxxxxx are
mmhwpoisonhugetlbmemory_hotplug-hotremove-memory-section-with-hwpoisoned-hugepage.patch
mm-hwpoison-move-definitions-of-num_poisoned_pages_-to-memory-failurec.patch
mm-hwpoison-pass-pfn-to-num_poisoned_pages_.patch
mm-hwpoison-introduce-per-memory_block-hwpoison-counter.patch
