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mm, hwpoison: use num_poisoned_pages_sub() to decrease num_poisoned_pages

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Use num_poisoned_pages_sub() to combine multiple atomic ops into one. Also
num_poisoned_pages_dec() can be killed as there's no caller now.

Link: https://lkml.kernel.org/r/20220830123604.25763-4-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Miaohe Lin
2022-08-30 20:36:01 +08:00
committed by Andrew Morton
parent da29499124
commit 21c9e90ab9
2 changed files with 4 additions and 7 deletions
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5
include/linux/swapops.h
View File

@@ -485,11 +485,6 @@ static inline void num_poisoned_pages_inc(void)
atomic_long_inc(&num_poisoned_pages);
}
static inline void num_poisoned_pages_dec(void)
{
atomic_long_dec(&num_poisoned_pages);
}
static inline void num_poisoned_pages_sub(long i)
{
atomic_long_sub(i, &num_poisoned_pages);

6
mm/memory-failure.c
View File

@@ -2602,7 +2602,7 @@ retry:
void clear_hwpoisoned_pages(struct page *memmap, int nr_pages)
{
int i;
int i, total = 0;
/*
* A further optimization is to have per section refcounted
@@ -2615,8 +2615,10 @@ 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();
total++;
ClearPageHWPoison(&memmap[i]);
}
}
if (total)
num_poisoned_pages_sub(total);
}