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SubjectRe: [PATCH v2 stable-4.19 1/3] mm/page_alloc: use ac->high_zoneidx for classzone_idx
Greg KH <> 于2022年9月25日周日 19:00写道:
> On Sun, Sep 25, 2022 at 03:35:27AM -0700, wangyong wrote:
> > From: Joonsoo Kim <>
> >
> > [ backport of commit 3334a45eb9e2bb040c880ef65e1d72357a0a008b ]
> This is from 5.8. What about the 5.4.y kernel? Why would someone
> upgrading from 4.19.y to 5.4.y suffer a regression here?
I encountered this problem on 4.19, but I haven't encountered it on 5.4.
However, this should be a common problem, so 5.4 may also need to be

Hello, Joonsoo, what do you think?

> And why wouldn't someone who has this issue just not use 5.10.y instead?
> What prevents someone from moving off of 4.19.y at this point in time?
This is a solution, but upgrading the kernel version requires time and overhead,
so use the patch is the most effective way, if there is.

> thanks,
> greg k-h

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