Re: [PATCH] mm/mempolicy: support MPOL_MF_STRICT for huge page mapping

["Li Xinhai" <lixinhai.lxh@gmail.com>]

On 2020-02-13 at 07:50 Mike Kravetz wrote:
>On 2/11/20 9:25 PM, Li Xinhai wrote:
>> On 2020-02-12 at 11:21 HORIGUCHI NAOYA(堀口　直也) wrote:
>>> On Mon, Feb 10, 2020 at 09:19:48AM -0800, Mike Kravetz wrote:
>>>> On 1/30/20 5:33 PM, Li Xinhai wrote:
>>> ...
>>>>>
>>>>> Signed-off-by: Li Xinhai <lixinhai.lxh@gmail.com>
>>>>> Cc: Michal Hocko <mhocko@suse.com>
>>>>> Cc: Mike Kravetz <mike.kravetz@oracle.com>
>>>>> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
>>>>> Cc: linux-man <linux-man@vger.kernel.org>
>>>>
>>>> Hello Naoya,
>>>>
>>>> Do you have any thoughts on this?  In previous discussions you suggested this
>>>> approach of removing the special casing for hugetlb pages.  The code looks
>>>> good to me and patch is fine with commmit message modification.  Just wanted
>>>> to get your opinion.
>>>
>>> Hi Mike, Xinhai,
>>>
>>> The suggested change looks good to me, too.
>>>
>>> Thanks,
>>> Naoya Horiguchi
>>
>> Naoya, thanks for inspecting the change!
>
>Can you please send V2 of patch with an updated commit message.
>
>I would like the section that which lists the impact to "users using
>MPOL_MF_STRICT alone" to say something like this:
>If MPOL_MF_STRICT alone was previously used, hugetlb pages not following the
>memory policy would not cause an EIO error.  After this change, hugetlb pages
>are treated like all other pages.  If  MPOL_MF_STRICT alone is used and hugetlb
>pages do not follow memory policy an EIO error will be returned.
>--
>Mike Kravetz 

I will send a new patch, thanks.