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mm: memory-failure: don't account hwpoison_filter() filtered pages 

mf_generic_kill_procs() will return -EOPNOTSUPP when hwpoison_filter()
filtered dax page.  In that case, action_result() isn't expected to be
called to update mf_stats.  This will results in inaccurate but benign
memory failure handling statistics.

Link: https://lkml.kernel.org/r/20230711055016.2286677-4-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 2023-07-11 13:50:11 +08:00 committed by Andrew Morton
parent 92a025a790
commit 80ee7cb271
1 changed files with 2 additions and 1 deletions
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3
mm/memory-failure.c
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@ -2098,7 +2098,8 @@ static int memory_failure_dev_pagemap(unsigned long pfn, int flags,
out:
/* drop pgmap ref acquired in caller */
put_dev_pagemap(pgmap);
action_result(pfn, MF_MSG_DAX, rc ? MF_FAILED : MF_RECOVERED);
if (rc != -EOPNOTSUPP)
action_result(pfn, MF_MSG_DAX, rc ? MF_FAILED : MF_RECOVERED);
return rc;
}