linux-kernel - Re: [PATCH 1/4] erofs: fix setting up pcluster for temporary pages

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Message-ID: <20201104011130.GA982972@xiangao.remote.csb>
Date:   Wed, 4 Nov 2020 09:11:30 +0800
From:   Gao Xiang <hsiangkao@...hat.com>
To:     Chao Yu <yuchao0@...wei.com>
Cc:     Gao Xiang <hsiangkao@....com>, linux-erofs@...ts.ozlabs.org,
        Chao Yu <chao@...nel.org>, LKML <linux-kernel@...r.kernel.org>,
        stable@...r.kernel.org
Subject: Re: [PATCH 1/4] erofs: fix setting up pcluster for temporary pages

On Wed, Nov 04, 2020 at 09:05:56AM +0800, Chao Yu wrote:
> On 2020/10/22 22:57, Gao Xiang wrote:
> > From: Gao Xiang <hsiangkao@...hat.com>
> > 
> > pcluster should be only set up for all managed pages instead of
> > temporary pages. Since it currently uses page->mapping to identify,
> > the impact is minor for now.
> > 
> > Fixes: 5ddcee1f3a1c ("erofs: get rid of __stagingpage_alloc helper")
> > Cc: <stable@...r.kernel.org> # 5.5+
> > Signed-off-by: Gao Xiang <hsiangkao@...hat.com>
> 
> Reviewed-by: Chao Yu <yuchao0@...wei.com>

Thanks, I've also added a note to the commit message like this,
"
[ Update: Vladimir reported the kernel log becomes polluted
  because PAGE_FLAGS_CHECK_AT_FREE flag(s) set if the page
  allocation debug option is enabled. ]
"
Will apply all of this to -fixes branch.

Thanks,
Gao Xiang

> 
> Thanks,
>