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Date:   Thu, 18 Jun 2020 09:43:05 +0800
From:   Yafang Shao <>
To:     Chris Down <>
Cc:     Naresh Kamboju <>,
        Michal Hocko <>,
        Anders Roxell <>,
        "Linux F2FS DEV, Mailing List" 
        linux-ext4 <>,
        linux-block <>,
        Andrew Morton <>,
        open list <>,
        Linux-Next Mailing List <>,
        linux-mm <>, Arnd Bergmann <>,
        Andreas Dilger <>,
        Jaegeuk Kim <>,
        "Theodore Ts'o" <>, Chao Yu <>,
        Hugh Dickins <>,
        Andrea Arcangeli <>,
        Matthew Wilcox <>,
        Chao Yu <>,,
        Johannes Weiner <>,
        Roman Gushchin <>, Cgroups <>
Subject: Re: mm: mkfs.ext4 invoked oom-killer on i386 - pagecache_get_page

On Thu, Jun 18, 2020 at 5:09 AM Chris Down <> wrote:
> Naresh Kamboju writes:
> >After this patch applied the reported issue got fixed.
> Great! Thank you Naresh and Michal for helping to get to the bottom of this :-)
> I'll send out a new version tomorrow with the fixes applied and both of you
> credited in the changelog for the detection and fix.

As we have already found that the usage around memory.{emin, elow} has
many limitations, I think memory.{emin, elow} should be used for
memcg-tree internally only, that means they can only be used to
calculate the protection of a memcg in a specified memcg-tree but
should not be exposed to other MM parts.


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