tree e9f5c8a43e61f7a9993fb962f3f4158ec46648c5
parent 7f4a2a97e324e8c826d1d983bc8efb5c59194f02
author Zhen Wei <zwei@novell.com> 1165564097 -0700
committer Mark Fasheh <mark.fasheh@oracle.com> 1167352832 -0800

ocfs2: export heartbeat thread pid via configfs

The patch allows the ocfs2 heartbeat thread to prioritize I/O which may
help cut down on spurious fencing. Most of this will be in the tools -
we can have a pid configfs attribute and let userspace (ocfs2_hb_ctl)
calls the ioprio_set syscall after starting heartbeat, but only cfq
scheduler supports I/O priorities now.

Signed-off-by: Zhen Wei <zwei@novell.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>