linux-kernel - [PATCH v2 3/4] mm/hwpoison: pass pfn to num_poisoned_pages

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Date:   Mon,  5 Sep 2022 15:21:36 +0900
From:   Naoya Horiguchi <naoya.horiguchi@...ux.dev>
To:     linux-mm@...ck.org
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Miaohe Lin <linmiaohe@...wei.com>,
        David Hildenbrand <david@...hat.com>,
        Mike Kravetz <mike.kravetz@...cle.com>,
        Yang Shi <shy828301@...il.com>,
        Oscar Salvador <osalvador@...e.de>,
        Muchun Song <songmuchun@...edance.com>,
        Jane Chu <jane.chu@...cle.com>,
        Naoya Horiguchi <naoya.horiguchi@....com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 3/4] mm/hwpoison: pass pfn to num_poisoned_pages_*()

From: Naoya Horiguchi <naoya.horiguchi@....com>

No functional change.

Signed-off-by: Naoya Horiguchi <naoya.horiguchi@....com>
---
 arch/parisc/kernel/pdt.c |  2 +-
 include/linux/mm.h       |  2 +-
 mm/memory-failure.c      | 16 ++++++++--------
 3 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/arch/parisc/kernel/pdt.c b/arch/parisc/kernel/pdt.c
index fdc880e2575a..80943a00e245 100644
--- a/arch/parisc/kernel/pdt.c
+++ b/arch/parisc/kernel/pdt.c
@@ -231,7 +231,7 @@ void __init pdc_pdt_init(void)
 
 		/* mark memory page bad */
 		memblock_reserve(pdt_entry[i] & PAGE_MASK, PAGE_SIZE);
-		num_poisoned_pages_inc();
+		num_poisoned_pages_inc(addr >> PAGE_SHIFT);
 	}
 }
 
diff --git a/include/linux/mm.h b/include/linux/mm.h
index b81dd600e51a..6316973afd1d 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -3203,7 +3203,7 @@ static inline int __get_huge_page_for_hwpoison(unsigned long pfn, int flags)
 	return 0;
 }
 
-static inline void num_poisoned_pages_inc()
+static inline void num_poisoned_pages_inc(unsigned long pfn)
 {
 }
 #endif
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index b6236c721f54..7dd4e403e634 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -74,17 +74,17 @@ atomic_long_t num_poisoned_pages __read_mostly = ATOMIC_LONG_INIT(0);
 
 static bool hw_memory_failure __read_mostly = false;
 
-static inline void num_poisoned_pages_inc(void)
+static inline void num_poisoned_pages_inc(unsigned long pfn)
 {
 	atomic_long_inc(&num_poisoned_pages);
 }
 
-static inline void num_poisoned_pages_dec(void)
+static inline void num_poisoned_pages_dec(unsigned long pfn)
 {
 	atomic_long_dec(&num_poisoned_pages);
 }
 
-static inline void num_poisoned_pages_sub(long i)
+static inline void num_poisoned_pages_sub(unsigned long pfn, long i)
 {
 	atomic_long_sub(i, &num_poisoned_pages);
 }
@@ -130,7 +130,7 @@ static bool page_handle_poison(struct page *page, bool hugepage_or_freepage, boo
 	if (release)
 		put_page(page);
 	page_ref_inc(page);
-	num_poisoned_pages_inc();
+	num_poisoned_pages_inc(page_to_pfn(page));
 
 	return true;
 }
@@ -1196,7 +1196,7 @@ static void action_result(unsigned long pfn, enum mf_action_page_type type,
 {
 	trace_memory_failure_event(pfn, type, result);
 
-	num_poisoned_pages_inc();
+	num_poisoned_pages_inc(pfn);
 	pr_err("%#lx: recovery action for %s: %s\n",
 		pfn, action_page_types[type], action_name[result]);
 }
@@ -1743,7 +1743,7 @@ static int hugetlb_set_page_hwpoison(struct page *hpage, struct page *page)
 		llist_add(&raw_hwp->node, head);
 		/* the first error event will be counted in action_result(). */
 		if (ret)
-			num_poisoned_pages_inc();
+			num_poisoned_pages_inc(page_to_pfn(page));
 	} else {
 		/*
 		 * Failed to save raw error info.  We no longer trace all
@@ -2408,7 +2408,7 @@ int unpoison_memory(unsigned long pfn)
 unlock_mutex:
 	mutex_unlock(&mf_mutex);
 	if (!ret || freeit) {
-		num_poisoned_pages_sub(count);
+		num_poisoned_pages_sub(pfn, count);
 		unpoison_pr_info("Unpoison: Software-unpoisoned page %#lx\n",
 				 page_to_pfn(p), &unpoison_rs);
 	}
@@ -2625,7 +2625,7 @@ void clear_hwpoisoned_pages(struct page *memmap, int nr_pages)
 
 	for (i = 0; i < nr_pages; i++) {
 		if (PageHWPoison(&memmap[i])) {
-			num_poisoned_pages_dec();
+			num_poisoned_pages_dec(page_to_pfn(&memmap[i]));
 			ClearPageHWPoison(&memmap[i]);
 		}
 	}
-- 
2.25.1