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Date: Thu, 28 May 2020 17:03:10 +0200 From: Michal Hocko <mhocko@...nel.org> To: Naresh Kamboju <naresh.kamboju@...aro.org> Cc: Yafang Shao <laoar.shao@...il.com>, Chris Down <chris@...isdown.name>, Anders Roxell <anders.roxell@...aro.org>, "Linux F2FS DEV, Mailing List" <linux-f2fs-devel@...ts.sourceforge.net>, linux-ext4 <linux-ext4@...r.kernel.org>, linux-block <linux-block@...r.kernel.org>, Andrew Morton <akpm@...ux-foundation.org>, open list <linux-kernel@...r.kernel.org>, Linux-Next Mailing List <linux-next@...r.kernel.org>, linux-mm <linux-mm@...ck.org>, Arnd Bergmann <arnd@...db.de>, Andreas Dilger <adilger.kernel@...ger.ca>, Jaegeuk Kim <jaegeuk@...nel.org>, Theodore Ts'o <tytso@....edu>, Chao Yu <chao@...nel.org>, Hugh Dickins <hughd@...gle.com>, Andrea Arcangeli <aarcange@...hat.com>, Matthew Wilcox <willy@...radead.org>, Chao Yu <yuchao0@...wei.com>, lkft-triage@...ts.linaro.org, Johannes Weiner <hannes@...xchg.org>, Roman Gushchin <guro@...com>, Cgroups <cgroups@...r.kernel.org> Subject: Re: mm: mkfs.ext4 invoked oom-killer on i386 - pagecache_get_page On Fri 22-05-20 02:23:09, Naresh Kamboju wrote: > My apology ! > As per the test results history this problem started happening from > Bad : next-20200430 (still reproducible on next-20200519) > Good : next-20200429 > > The git tree / tag used for testing is from linux next-20200430 tag and reverted > following three patches and oom-killer problem fixed. > > Revert "mm, memcg: avoid stale protection values when cgroup is above > protection" > Revert "mm, memcg: decouple e{low,min} state mutations from protectinn checks" > Revert "mm-memcg-decouple-elowmin-state-mutations-from-protection-checks-fix" The discussion has fragmented and I got lost TBH. In http://lkml.kernel.org/r/CA+G9fYuDWGZx50UpD+WcsDeHX9vi3hpksvBAWbMgRZadb0Pkww@mail.gmail.com you have said that none of the added tracing output has triggered. Does this still hold? Because I still have a hard time to understand how those three patches could have the observed effects. -- Michal Hocko SUSE Labs
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