Re: [PATCH v2 1/3] mm/memory-failure: userspace controls soft-offlining pages

On Mon, Jun 17, 2024 at 4:16 PM Miaohe Lin linmiaohe@huawei.com wrote:

On 2024/6/17 15:51, Oscar Salvador wrote:

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On 2024-06-17 09:31, Miaohe Lin wrote:

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IMHO, it might not be suitable to use EAGAIN. Because it means "Resource temporarily unavailable" and this can be solved by simply retry later without any further actions taken. But I might be wrong.

We usually use 'EOPNOTSUPP' when we fail due to a setting not being set. EPERM is more for a capability matter.

Agreed. Let's use 'EOPNOTSUPP' here ;)

Thanks, Lance

Thanks Oscar. So we should return EOPNOTSUPP here.

Thanks. .