From: Greg KH <gregkh@linuxfoundation.org>
To: yong w <yongw.pur@gmail.com>
Cc: jaewon31.kim@samsung.com, linux-kernel@vger.kernel.org,
mhocko@kernel.org, stable@vger.kernel.org,
wang.yong12@zte.com.cn, Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Andrew Morton <akpm@linux-foundation.org>,
Johannes Weiner <hannes@cmpxchg.org>,
Minchan Kim <minchan@kernel.org>,
Mel Gorman <mgorman@techsingularity.net>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [PATCH v2 stable-4.19 1/3] mm/page_alloc: use ac->high_zoneidx for classzone_idx
Date: Mon, 26 Sep 2022 08:46:15 +0200 [thread overview]
Message-ID: <YzFKtxt0iZODL211@kroah.com> (raw)
In-Reply-To: <CAOH5QeBiSEe03KNge9voJ-HjKbNLDoeY2PfKC7HE7F6z-92d7A@mail.gmail.com>
On Sun, Sep 25, 2022 at 10:32:32PM +0800, yong w wrote:
> Greg KH <gregkh@linuxfoundation.org> 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 <iamjoonsoo.kim@lge.com>
> > >
> > > [ 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
> merged.
>
> 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.
You will have to move off of 4.19 soon anyway, so why delay the change?
thanks,
greg k-h
next prev parent reply other threads:[~2022-09-26 6:46 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-13 13:09 [PATCH v4] page_alloc: consider highatomic reserve in watermark fast yong
2022-09-13 13:54 ` Greg KH
2022-09-14 0:46 ` yong w
2022-09-16 9:40 ` Greg KH
2022-09-16 17:05 ` [PATCH stable-4.19 0/3] page_alloc: consider highatomic reserve in watermark fast backports to 4.19 wangyong
2022-09-16 17:05 ` [PATCH 1/3] mm/page_alloc: use ac->high_zoneidx for classzone_idx wangyong
2022-09-16 17:09 ` kernel test robot
2022-09-16 17:05 ` [PATCH 2/3] page_alloc: consider highatomic reserve in watermark fast wangyong
2022-09-16 17:05 ` [PATCH 3/3] page_alloc: fix invalid watermark check on a negative value wangyong
2022-09-20 17:41 ` [PATCH stable-4.19 0/3] page_alloc: consider highatomic reserve in watermark fast backports to 4.19 Greg KH
2022-09-25 10:35 ` [PATCH v2 " wangyong
2022-09-25 10:35 ` [PATCH v2 stable-4.19 1/3] mm/page_alloc: use ac->high_zoneidx for classzone_idx wangyong
2022-09-25 10:36 ` kernel test robot
2022-09-25 11:00 ` Greg KH
2022-09-25 14:32 ` yong w
2022-09-26 6:46 ` Greg KH [this message]
2022-09-25 10:35 ` [PATCH v2 stable-4.19 2/3] page_alloc: consider highatomic reserve in watermark fast wangyong
2022-09-25 10:35 ` [PATCH v2 stable-4.19 3/3] page_alloc: fix invalid watermark check on a negative value wangyong
2022-10-02 15:37 ` [PATCH v2 stable-4.19 0/3] page_alloc: consider highatomic reserve in watermark fast backports to 4.19 Greg KH
[not found] ` <CAOH5QeB2EqpqQd6fw-P199w8K8-3QNv_t-u_Wn1BLnfaSscmCg@mail.gmail.com>
2022-10-07 16:41 ` Greg KH
2022-10-10 15:47 ` yong w
2022-10-10 15:58 ` Greg KH
2022-09-18 1:41 ` [PATCH v4] page_alloc: consider highatomic reserve in watermark fast Jaewon Kim
2022-09-19 13:21 ` yong w
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