lkml.org 
[lkml]   [2012]   [Apr]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [Lsf] [RFC] writeback and cgroup
From
Date
On Wed, 2012-04-04 at 11:49 -0700, Tejun Heo wrote:
> > - How to handle NFS.
>
> As said above, maybe through network based bdi pressure propagation,
> Maybe some other special case mechanism. Unsure but I don't think
> this concern should dictate the whole design.

NFS has a custom bdi implementation and implements congestion control
based on the number of outstanding writeback pages.

See fs/nfs/write.c:nfs_{set,end}_page_writeback

All !block based filesystems have their own BDI implementation, I'm not
sure on the congestion implementation of anything other than NFS though.


\
 
 \ /
  Last update: 2012-04-14 13:57    [W:0.118 / U:1.860 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site