tree 8eff8e5ba534feb20dae7b143ea42bf0b0c24725
parent 453eac8a9aa417878a38bdfbccafd5f7ce4e8e4e
author Dave Chinner <david@fromorbit.com> 1263210599 +0000
committer Alex Elder <aelder@sgi.com> 1263591174 -0600

xfs: Don't wake xfsbufd when idle

The xfsbufd wakes every xfsbufd_centisecs (once per second by
default) for each filesystem even when the filesystem is idle.  If
the xfsbufd has nothing to do, put it into a long term sleep and
only wake it up when there is work pending (i.e. dirty buffers to
flush soon). This will make laptop power misers happy.

Signed-off-by: Dave Chinner <david@fromorbit.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>