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Subject[PATCH v3 3/4] mm/hwpoison: pass pfn to num_poisoned_pages_*()
Date
From: Naoya Horiguchi <naoya.horiguchi@nec.com>

No functional change.

Signed-off-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Reviewed-by: Miaohe Lin <linmiaohe@huawei.com>
---
ChangeLog v2 -> v3:
- added declaration of num_poisoned_pages_inc() in #ifdef CONFIG_MEMORY_FAILURE
---
arch/parisc/kernel/pdt.c | 2 +-
include/linux/mm.h | 4 ++--
mm/memory-failure.c | 12 ++++++------
3 files changed, 9 insertions(+), 9 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 80a2d800f272..2bb5d1596041 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -3279,14 +3279,14 @@ extern atomic_long_t num_poisoned_pages __read_mostly;
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);
+extern void num_poisoned_pages_inc(unsigned long pfn);
#else
static inline int __get_huge_page_for_hwpoison(unsigned long pfn, int flags)
{
return 0;
}

-static inline void num_poisoned_pages_inc(void)
+static inline void num_poisoned_pages_inc(unsigned long pfn)
{
}
#endif
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index aa6ce685b863..a069d43bc87f 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -74,12 +74,12 @@ 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_sub(long i)
+static inline void num_poisoned_pages_sub(unsigned long pfn, long i)
{
atomic_long_sub(i, &num_poisoned_pages);
}
@@ -125,7 +125,7 @@ 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;
}
@@ -1194,7 +1194,7 @@ 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]);
}
@@ -1741,7 +1741,7 @@ 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
@@ -2414,7 +2414,7 @@ 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);
}
--
2.25.1
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