Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> 于2022年9月13日周二 21:54写道：
>
> 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
f27ce0e page_alloc: consider highatomic reserve in watermark fast
> > 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?
>
I think these two patches should also be merged.
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
> confused,
>
> greg k-h
