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Subject: RE: [PATCH v4] page_alloc: consider highatomic reserve in watermark
 fast
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Sender: Jaewon Kim <jaewon31.kim@samsung.com>
From:   Jaewon Kim <jaewon31.kim@samsung.com>
To:     Greg KH <gregkh@linuxfoundation.org>, yong w <yongw.pur@gmail.com>
CC:     Jaewon Kim <jaewon31.kim@samsung.com>,
        "mhocko@kernel.org" <mhocko@kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "stable@vger.kernel.org" <stable@vger.kernel.org>,
        "wang.yong12@zte.com.cn" <wang.yong12@zte.com.cn>,
        YongTaek Lee <ytk.lee@samsung.com>
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Date:   Sun, 18 Sep 2022 10:41:40 +0900
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>On Wed, Sep 14, 2022 at 08:46:15AM +0800, yong w wrote:
>> Greg KH <gregkh@linuxfoundation.org> =E4=BA=8E2022=E5=B9=B49=E6=9C=8813=
=E6=97=A5=E5=91=A8=E4=BA=8C 21:54?=E9=81=93=EF=BC=9A
>>=20
>> >
>> > On Tue, Sep 13, 2022 at 09:09:47PM +0800, yong wrote:
>> > > Hello,
>> > > This patch is required to be patched in linux-5.4.y and linux-4.19.y=
.
>> >
>> > What is "this patch"?  There is no context here :(
>> >
>> Sorry, I forgot to quote the original patch. the patch is as follows
>>=20
>>     f27ce0e page_alloc: consider highatomic reserve in watermark fast
>>=20
>> > > In addition to that, the following two patches are somewhat related:
>> > >
>> > >       3334a45 mm/page_alloc: use ac->high_zoneidx for classzone_idx
>> > >       9282012 page_alloc: fix invalid watermark check on a negative =
value
>> >
>> > In what way?  What should be done here by us?
>> >
>>=20
>> I think these two patches should also be merged.
>>=20
>>     The classzone_idx  parameter is used in the zone_watermark_fast
>> functionzone, and 3334a45 use ac->high_zoneidx for classzone_idx.
>>     "9282012 page_alloc: fix invalid watermark check on a negative
>> value"  fix f27ce0e introduced issues
>
>Ok, I need an ack by all the developers involved in those commits, as
>well as the subsystem maintainer so that I know it's ok to take them.
>
>Can you provide a series of backported and tested patches so that they
>are easy to review?
>
>thanks,
>
>greg k-h

Hello I didn't know my Act is needed to merge it.

Acked-by: Jaewon Kim <jaewon31.kim@samsung.com>

I don't understand well why the commit f27ce0e has dependency on 3334a45, t=
hough.

Thank you
Jaewon Kim