+ mm-hwpoison-move-definitions-of-num_poisoned_pages_-to-memory-failurec.patch added to mm-unstable branch

* + mm-hwpoison-move-definitions-of-num_poisoned_pages_-to-memory-failurec.patch added to mm-unstable branch
@ 2022-09-21 18:31 Andrew Morton
  0 siblings, 0 replies; 2+ messages in thread
From: Andrew Morton @ 2022-09-21 18:31 UTC (permalink / raw)
  To: mm-commits, songmuchun, shy828301, osalvador, mike.kravetz,
	linmiaohe, jane.chu, david, naoya.horiguchi, akpm


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@nec.com>
Subject: mm/hwpoison: move definitions of num_poisoned_pages_* to memory-failure.c
Date: Wed, 21 Sep 2022 18:13:57 +0900

These interfaces will be used by drivers/base/core.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/20220921091359.25889-3-naoya.horiguchi@linux.dev
Signed-off-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Jane Chu <jane.chu@oracle.com>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Yang Shi <shy828301@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

--- 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
@@ -3279,11 +3279,16 @@ extern atomic_long_t num_poisoned_pages
 extern int soft_offline_page(unsigned long pfn, int flags);
 #ifdef CONFIG_MEMORY_FAILURE
 extern int __get_huge_page_for_hwpoison(unsigned long pfn, int flags);
+extern void num_poisoned_pages_inc(void);
 #else
 static inline int __get_huge_page_for_hwpoison(unsigned long pfn, int flags)
 {
 	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;
 
+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);
+}
+
 /*
  * Return values:
  *   1:   the page is dissolved (if needed) and taken off from buddy,
_

Patches currently in -mm which might be from naoya.horiguchi@nec.com are

mm-huge_memory-use-pfn_to_online_page-in-split_huge_pages_all.patch
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


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