LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Matthew Wilcox <willy@infradead.org>
To: Johannes Weiner <hannes@cmpxchg.org>
Cc: Shakeel Butt <shakeelb@google.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Linux MM <linux-mm@kvack.org>,
	linux-fsdevel <linux-fsdevel@vger.kernel.org>,
	LKML <linux-kernel@vger.kernel.org>,
	Kernel Team <kernel-team@fb.com>
Subject: Re: xarray breaks thrashing detection and cgroup isolation
Date: Fri, 24 May 2019 09:11:46 -0700	[thread overview]
Message-ID: <20190524161146.GC1075@bombadil.infradead.org> (raw)
In-Reply-To: <20190523195933.GA6404@cmpxchg.org>

On Thu, May 23, 2019 at 03:59:33PM -0400, Johannes Weiner wrote:
> My point is that we cannot have random drivers' internal data
> structures charge to and pin cgroups indefinitely just because they
> happen to do the modprobing or otherwise interact with the driver.
> 
> It makes no sense in terms of performance or cgroup semantics.

But according to Roman, you already have that problem with the page
cache.
https://lore.kernel.org/linux-mm/20190522222254.GA5700@castle/T/

So this argument doesn't make sense to me.

  reply	other threads:[~2019-05-24 16:11 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-23 17:43 Johannes Weiner
2019-05-23 18:37 ` Matthew Wilcox
2019-05-23 18:49   ` Shakeel Butt
2019-05-23 19:00     ` Matthew Wilcox
2019-05-23 19:21       ` Johannes Weiner
2019-05-23 19:41         ` Matthew Wilcox
2019-05-23 19:59           ` Johannes Weiner
2019-05-24 16:11             ` Matthew Wilcox [this message]
2019-05-24 17:06               ` Johannes Weiner
2019-05-24 17:18                 ` Shakeel Butt

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=20190524161146.GC1075@bombadil.infradead.org \
    --to=willy@infradead.org \
    --cc=akpm@linux-foundation.org \
    --cc=hannes@cmpxchg.org \
    --cc=kernel-team@fb.com \
    --cc=linux-fsdevel@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=shakeelb@google.com \
    --subject='Re: xarray breaks thrashing detection and cgroup isolation' \
    /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

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).