tree 2b9e0d69cedefea5b8f127245e0ff37db4fe01dd
parent c4b646ff80f558010ee486421ee1b718db1a3193
author Yong Wang <yong.y.wang@intel.com> 1335438946 +0530
committer Krishna Vanka <kvanka@codeaurora.org> 1342415922 +0530

bdi: use deferable timer for sync_supers task

sync_supers task currently wakes up periodically for superblock
writeback. This hurts power on battery driven devices. This patch
turns this housekeeping timer into a deferable timer so that it
does not fire when system is really idle.

CRs-Fixed: 353700
Change-Id: Idc7953b5d0580546808bc5832291ca570837ee7f
Signed-off-by: Yong Wang <yong.y.wang@intel.com>
Signed-off-by: Xia Wu <xia.wu@intel.com>
Signed-off-by: Krishna Vanka <kvanka@codeaurora.org>