linux-kernel - Re: Re: [PATCH] mm: hugetlbfs: add hwcrp_hugepages to record memory failure on hugetlbfs

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Message-ID: <20210608022450.2044-1-wangbin224@huawei.com>
Date:   Tue, 8 Jun 2021 10:24:50 +0800
From:   wangbin <wangbin224@...wei.com>
To:     <mike.kravetz@...cle.com>
CC:     <akpm@...ux-foundation.org>, <linux-kernel@...r.kernel.org>,
        <linux-mm@...ck.org>, <nao.horiguchi@...il.com>,
        <wangbin224@...wei.com>, <wuxu.wu@...wei.com>
Subject: Re: Re: [PATCH] mm: hugetlbfs: add hwcrp_hugepages to record memory failure on hugetlbfs

> What specific problem are you trying to solve?  Are trying to see how
> many huge pages were hit by memory errors?

Yes, I'd like to know how many huge pages are not available because of
the memory errors. Just like HardwareCorrupted in the /proc/meminfo.
But the HardwareCorrupted only adds one page size when a huge page is
hit by memory errors, and mixes with normal pages. So I think we should
add a new counts to track the memory errors on hugetlbfs. 
--
Bin Wang