From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: [LSF/MM TOPIC][ATTEND] Improving async io, specifically io_submit latencies Date: Fri, 1 Mar 2013 08:31:21 -0800 Message-ID: <20130301163121.GB2481@mtj.dyndns.org> References: <512FB91B.80102@suse.de> <20130228210318.GA3762@google.com> <20130301162038.GA2481@mtj.dyndns.org> Mime-Version: 1.0 Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=x-received:sender:date:from:to:cc:subject:message-id:references :mime-version:content-type:content-disposition:in-reply-to :user-agent; bh=tOqZJC7AutsiALH8+8O/X+6/4okrJNGcbVDHoEWK3Y0=; b=D1b1fK7Kz6mXXZLguN5QR8JdD8gd4mu+JEappffuSSgLoQQ8qUA6DABCARTrdjDp0d rKQ1Uq1pbWsWy88tUx3SGKFG1U4XD+pJ7D4cNgDLaxjL6HBjnxQ5GFbIek39id9ajdI8 UJmFOvCYrVTZvxrr40BEFKB20B41kl5NZhqme6+F+jJEE0pr3uAwlJFoZ4y2w9g98ayX Cbd0tYxpvMBNtE7Jmpak18Tfm+mjRO5O6xJg4JTaNvuJij2ap8UZdcyt5+AlO4/uhe+W iQf+RcC2EY6YO3HmZ+8/QV8TJeL5k8q/JBKHUBdt7eubWqHwfoGATsTEs1K0d7afJUuk fBdw== Content-Disposition: inline In-Reply-To: <20130301162038.GA2481@mtj.dyndns.org> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Jeff Moyer Cc: Kent Overstreet , Ankit Jain , lsf-pc@lists.linux-foundation.org, linux-fsdevel@vger.kernel.org, Jan Kara , Zach Brown , tytso@mit.edu, Jens Axboe , Li Zefan , cgroups@vger.kernel.org On Fri, Mar 01, 2013 at 08:20:38AM -0800, Tejun Heo wrote: > One obstacle there is we currently don't have a way to say "this > workqueue belongs to this cgroup" as there is no "this" cgroup defined > (awesome design). That part is being rectified but for the time being > we can probably say "this workqueue belongs to the same cgroups as > %current" which should be enough for aio contexts, I think. Or maybe we should just add current->wq which always matches cgroup associations of the task? -- tejun