linux-f2fs-devel.lists.sourceforge.net archive mirror
 help / color / mirror / Atom feed
From: Michal Hocko <mhocko@kernel.org>
To: Naresh Kamboju <naresh.kamboju@linaro.org>,
	Chris Down <chris@chrisdown.name>
Cc: lkft-triage@lists.linaro.org, linux-mm <linux-mm@kvack.org>,
	Yafang Shao <laoar.shao@gmail.com>,
	Andreas Dilger <adilger.kernel@dilger.ca>,
	Jaegeuk Kim <jaegeuk@kernel.org>,
	Andrea Arcangeli <aarcange@redhat.com>,
	Anders Roxell <anders.roxell@linaro.org>,
	Hugh Dickins <hughd@google.com>,
	Matthew Wilcox <willy@infradead.org>,
	Linux-Next Mailing List <linux-next@vger.kernel.org>,
	linux-ext4 <linux-ext4@vger.kernel.org>,
	Arnd Bergmann <arnd@arndb.de>,
	linux-block <linux-block@vger.kernel.org>,
	cgroups@vger.kernel.org, Theodore Ts'o <tytso@mit.edu>,
	open list <linux-kernel@vger.kernel.org>,
	"Linux F2FS DEV,
	Mailing List" <linux-f2fs-devel@lists.sourceforge.net>,
	Johannes Weiner <hannes@cmpxchg.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Roman Gushchin <guro@fb.com>
Subject: Re: [f2fs-dev] mm: mkfs.ext4 invoked oom-killer on i386 - pagecache_get_page
Date: Thu, 21 May 2020 11:55:15 +0200	[thread overview]
Message-ID: <20200521095515.GK6462@dhcp22.suse.cz> (raw)
In-Reply-To: <20200520190906.GA558281@chrisdown.name>

On Wed 20-05-20 20:09:06, Chris Down wrote:
> Hi Naresh,
> 
> Naresh Kamboju writes:
> > As a part of investigation on this issue LKFT teammate Anders Roxell
> > git bisected the problem and found bad commit(s) which caused this problem.
> > 
> > The following two patches have been reverted on next-20200519 and retested the
> > reproducible steps and confirmed the test case mkfs -t ext4 got PASS.
> > ( invoked oom-killer is gone now)
> > 
> > Revert "mm, memcg: avoid stale protection values when cgroup is above
> > protection"
> >    This reverts commit 23a53e1c02006120f89383270d46cbd040a70bc6.
> > 
> > Revert "mm, memcg: decouple e{low,min} state mutations from protection
> > checks"
> >    This reverts commit 7b88906ab7399b58bb088c28befe50bcce076d82.
> 
> Thanks Anders and Naresh for tracking this down and reverting.
> 
> I'll take a look tomorrow. I don't see anything immediately obviously wrong
> in either of those commits from a (very) cursory glance, but they should
> only be taking effect if protections are set.

Agreed. If memory.{low,min} is not used then the patch should be
effectively a nop. Btw. do you see the problem when booting with
cgroup_disable=memory kernel command line parameter?

I suspect that something might be initialized for memcg incorrectly and
the patch just makes it more visible for some reason.
-- 
Michal Hocko
SUSE Labs


_______________________________________________
Linux-f2fs-devel mailing list
Linux-f2fs-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel

  parent reply	other threads:[~2020-05-21  9:55 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-01 12:38 [f2fs-dev] mm: mkfs.ext4 invoked oom-killer on i386 - pagecache_get_page Naresh Kamboju
2020-05-01 20:58 ` Andrew Morton
2020-05-18 14:10   ` Naresh Kamboju
2020-05-19  7:52     ` Michal Hocko
2020-05-19  8:11       ` Arnd Bergmann
2020-05-19  8:45         ` Michal Hocko
2020-05-20 11:56           ` Naresh Kamboju
2020-05-20 17:59             ` Naresh Kamboju
2020-05-20 19:09               ` Chris Down
2020-05-21  9:22                 ` Naresh Kamboju
2020-05-21  9:35                   ` Arnd Bergmann
2020-05-21  9:55                 ` Michal Hocko [this message]
2020-05-21 10:41                   ` Naresh Kamboju
2020-05-21 10:58                     ` Michal Hocko
2020-05-21 12:24                       ` Hugh Dickins via Linux-f2fs-devel
2020-05-21 12:44                         ` Michal Hocko
2020-05-21 19:17                           ` Johannes Weiner
2020-05-21 20:06                             ` Hugh Dickins via Linux-f2fs-devel
2020-05-21 21:58                               ` Johannes Weiner
2020-05-21 23:35                                 ` Hugh Dickins via Linux-f2fs-devel
2020-05-28 14:59                                 ` Michal Hocko
2020-05-21 16:34                   ` Michal Hocko
2020-05-21 19:00                     ` Naresh Kamboju
2020-05-21 20:53                       ` Naresh Kamboju
2020-05-28 15:03                         ` Michal Hocko
2020-05-28 16:17                           ` Naresh Kamboju
2020-05-28 16:41                             ` Chris Down
2020-05-29  1:50                               ` Yafang Shao
2020-05-29  1:56                                 ` Chris Down
2020-05-29  9:49                                   ` Michal Hocko
2020-06-11  9:55                                     ` Michal Hocko
2020-06-12  9:43                                       ` Naresh Kamboju
2020-06-12 12:09                                         ` Michal Hocko
2020-06-17 13:37                     ` Naresh Kamboju
2020-06-17 13:57                       ` Chris Down
2020-06-17 14:11                         ` Michal Hocko
2020-06-17 15:53                           ` Naresh Kamboju
2020-06-17 16:06                             ` Michal Hocko
2020-06-17 20:13                               ` Naresh Kamboju
2020-06-17 21:09                                 ` Chris Down
2020-06-18  1:43                                   ` Yafang Shao
2020-06-18 12:37                                     ` Chris Down
2020-06-18 12:41                                       ` Michal Hocko
2020-06-18 12:49                                         ` Chris Down
2020-06-18 14:59                                       ` Yafang Shao
2020-06-17 13:59                       ` Michal Hocko
2020-06-17 14:08                         ` Chris Down
2020-05-21  2:39               ` Yafang Shao
2020-05-21  8:58                 ` Naresh Kamboju
2020-05-21  9:47                   ` Yafang Shao

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200521095515.GK6462@dhcp22.suse.cz \
    --to=mhocko@kernel.org \
    --cc=aarcange@redhat.com \
    --cc=adilger.kernel@dilger.ca \
    --cc=akpm@linux-foundation.org \
    --cc=anders.roxell@linaro.org \
    --cc=arnd@arndb.de \
    --cc=cgroups@vger.kernel.org \
    --cc=chris@chrisdown.name \
    --cc=guro@fb.com \
    --cc=hannes@cmpxchg.org \
    --cc=hughd@google.com \
    --cc=jaegeuk@kernel.org \
    --cc=laoar.shao@gmail.com \
    --cc=linux-block@vger.kernel.org \
    --cc=linux-ext4@vger.kernel.org \
    --cc=linux-f2fs-devel@lists.sourceforge.net \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=linux-next@vger.kernel.org \
    --cc=lkft-triage@lists.linaro.org \
    --cc=naresh.kamboju@linaro.org \
    --cc=tytso@mit.edu \
    --cc=willy@infradead.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).