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Date: Wed, 4 Apr 2012 11:56:05 -0700
From: Tejun Heo <tj@...nel.org>
To: Steve French <smfrench@...il.com>
Cc: Vivek Goyal <vgoyal@...hat.com>, ctalbott@...gle.com,
rni@...gle.com, andrea@...terlinux.com,
containers@...ts.linux-foundation.org,
linux-kernel@...r.kernel.org, lsf@...ts.linux-foundation.org,
linux-mm@...ck.org, jmoyer@...hat.com, lizefan@...wei.com,
linux-fsdevel@...r.kernel.org, cgroups@...r.kernel.org
Subject: Re: [Lsf] [RFC] writeback and cgroup
On Wed, Apr 04, 2012 at 10:36:04AM -0500, Steve French wrote:
> > How do you take care of thorottling IO to NFS case in this model? Current
> > throttling logic is tied to block device and in case of NFS, there is no
> > block device.
>
> Similarly smb2 gets congestion info (number of "credits") returned from
> the server on every response - but not sure why congestion
> control is tied to the block device when this would create
> problems for network file systems
I hope the previous replies answered this. It's about writeback
getting pressure from bdi and isn't restricted to block devices.
Thanks.
--
tejun
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