From: Tejun Heo <tj@kernel.org>
To: Vivek Goyal <vgoyal@redhat.com>
Cc: Jeff Moyer <jmoyer@redhat.com>,
axboe@kernel.dk, ctalbott@google.com, rni@google.com,
linux-kernel@vger.kernel.org, cgroups@vger.kernel.org,
containers@lists.linux-foundation.org, fengguang.wu@intel.com,
hughd@google.com, akpm@linux-foundation.org,
"Daniel P. Berrange" <berrange@redhat.com>
Subject: Re: [PATCH 11/11] blkcg: implement per-blkg request allocation
Date: Fri, 27 Apr 2012 10:25:19 -0700 [thread overview]
Message-ID: <20120427172519.GB26595@google.com> (raw)
In-Reply-To: <20120427172110.GM10579@redhat.com>
Hello,
On Fri, Apr 27, 2012 at 01:21:10PM -0400, Vivek Goyal wrote:
> For non-priviliged users, something along the lines of per session
> cpu autogroup might make sense. But even then if some IO is submitted
> from that autoblkgroup, kernel can't claim that memory till IO is
> completed.
>
> So per cgroup number of request will probably be a problem even if
> kenrel managed those completely.
My point was that trying to solve all the policy decisions in kernel
proper is not a very good idea.
> So are you planning to put a patch in kernel to disallow cgroup creation
> for non-priviliged users?
No, I'm not gonna break the current users. It's just not the
direction I want to take cgroup towards and the current breakages will
remain broken.
Thanks.
--
tejun
next prev parent reply other threads:[~2012-04-27 17:25 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-26 21:59 [PATCHSET] block: implement per-blkg request allocation Tejun Heo
2012-04-26 21:59 ` [PATCH 01/11] blkcg: fix blkg_alloc() failure path Tejun Heo
2012-04-27 14:26 ` Vivek Goyal
2012-04-27 14:27 ` Tejun Heo
2012-04-26 21:59 ` [PATCH 02/11] blkcg: __blkg_lookup_create() doesn't have to fail on radix tree preload failure Tejun Heo
2012-04-27 14:42 ` Vivek Goyal
2012-04-27 14:47 ` Tejun Heo
2012-04-27 21:18 ` [PATCH UPDATED 02/11] blkcg: __blkg_lookup_create() doesn't need radix preload Tejun Heo
2012-04-26 21:59 ` [PATCH 03/11] blkcg: make root blkcg allocation use %GFP_KERNEL Tejun Heo
2012-04-27 21:19 ` [PATCH UPDATED " Tejun Heo
2012-04-26 21:59 ` [PATCH 04/11] mempool: add @gfp_mask to mempool_create_node() Tejun Heo
2012-04-26 21:59 ` [PATCH 05/11] block: drop custom queue draining used by scsi_transport_{iscsi|fc} Tejun Heo
2012-05-02 4:55 ` Mike Christie
2012-04-26 21:59 ` [PATCH 06/11] block: refactor get_request[_wait]() Tejun Heo
2012-04-26 21:59 ` [PATCH 07/11] block: allocate io_context upfront Tejun Heo
2012-04-26 21:59 ` [PATCH 08/11] blkcg: inline bio_blkcg() and friends Tejun Heo
2012-04-26 21:59 ` [PATCH 09/11] block: add q->nr_rqs[] and move q->rq.elvpriv to q->nr_rqs_elvpriv Tejun Heo
2012-04-26 21:59 ` [PATCH 10/11] block: prepare for multiple request_lists Tejun Heo
2012-04-26 21:59 ` [PATCH 11/11] blkcg: implement per-blkg request allocation Tejun Heo
2012-04-27 14:54 ` Jeff Moyer
2012-04-27 15:02 ` Tejun Heo
2012-04-27 15:40 ` Vivek Goyal
2012-04-27 15:45 ` Tejun Heo
2012-04-27 15:48 ` Vivek Goyal
2012-04-27 15:51 ` Tejun Heo
2012-04-27 15:56 ` Vivek Goyal
2012-04-27 16:19 ` Vivek Goyal
2012-04-27 16:20 ` Tejun Heo
2012-04-27 17:21 ` Vivek Goyal
2012-04-27 17:25 ` Tejun Heo [this message]
2012-04-27 19:46 ` Vivek Goyal
2012-04-27 20:15 ` Tejun Heo
2012-04-27 20:21 ` Vivek Goyal
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=20120427172519.GB26595@google.com \
--to=tj@kernel.org \
--cc=akpm@linux-foundation.org \
--cc=axboe@kernel.dk \
--cc=berrange@redhat.com \
--cc=cgroups@vger.kernel.org \
--cc=containers@lists.linux-foundation.org \
--cc=ctalbott@google.com \
--cc=fengguang.wu@intel.com \
--cc=hughd@google.com \
--cc=jmoyer@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=rni@google.com \
--cc=vgoyal@redhat.com \
/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