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Subject: Re: [PATCH v2] mm/swapfile: unuse_pte can map random data if swap
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To: Alistair Popple <apopple@nvidia.com>
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References: <20220416030549.60559-1-linmiaohe@huawei.com>
 <87tuapk9n7.fsf@nvdebian.thelocal> <87r15tjy76.fsf@nvdebian.thelocal>
From: Miaohe Lin <linmiaohe@huawei.com>
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Date: Tue, 19 Apr 2022 19:26:43 +0800
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On 2022/4/19 15:53, Alistair Popple wrote:
> Also in madvise_free_pte_range() you could just remove the swap entry as it's no
> longer needed.
> 

This swap entry will be removed in madvise_dontneed_single_vma().
And in madvise_free_pte_range(), we may need to keep it as same as
hwpoison entry. Or am I supposed to remove it even if hwpoison entry
is reused later?

Thanks!

> Alistair Popple <apopple@nvidia.com> writes:
> 
>> Miaohe Lin <linmiaohe@huawei.com> writes:
>>
...