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mm, hwpoison: fix extra put_page() in soft_offline_page()

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When hwpoison_filter() refuses to soft offline a page, the page refcnt
incremented previously by MF_COUNT_INCREASED would have been consumed via
get_hwpoison_page() if ret <= 0.  So the put_ref_page() here will put the
extra one.  Remove it to fix the issue.

Link: https://lkml.kernel.org/r/20220818130016.45313-4-linmiaohe@huawei.com
Fixes: 9113eaf331bf ("mm/memory-failure.c: add hwpoison_filter for soft offline")
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 2022-08-18 21:00:13 +08:00 committed by Andrew Morton
parent 6bbabd041d
commit 12f1dbcf8f
1 changed files with 0 additions and 2 deletions

2
mm/memory-failure.c

@ -2591,8 +2591,6 @@ retry:
if (hwpoison_filter(page)) {
if (ret > 0)
put_page(page);
else
put_ref_page(ref_page);
mutex_unlock(&mf_mutex);
return -EOPNOTSUPP;