staging: lustre: remove back_to_sleep()

When 'back_to_sleep()' is passed as the 'timeout' function,
the effect is to wait indefinitely for the event, polling
once after the timeout.
If LWI_ON_SIGNAL_NOOP is given, then after the timeout
we allow fatal signals to interrupt the wait.

Make this more obvious in both places "back_to_sleep()" is
used but using two explicit sleeps.

The code in ptlrpcd_add_req() looks odd - why not just have one
wait_event_idle()?  However I believe this is a faithful
transformation of the existing code.

Reviewed-by: James Simmons <[email protected]>
Signed-off-by: NeilBrown <[email protected]>
Reviewed-by: Patrick Farrell <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

0 files changed, 0 insertions, 0 deletions