[PATCH 0/1] scsi_debug: delay stress fix

[Douglas Gilbert <dgilbert@interlog.com>]

Bart Van Assche reported that when the scsi_debug driver was being
stress tested with fio, changing the delay paremeter via sysfs
caused a cascade of oops-es. The fix presented reads the driver
wide delay values (jiffies or nanoseconds) once and remembers in
the sdebug_defer object which defer method is used and which 
method has been initialized. This simplifies handling when command
aborts occur.

This causes a minor changes in semantic: a SCSI command "in
flight" is no longer impacted by changing the delay option
after it has been scheduled (i.e. while it is waiting for a work
queue or a hr timer to exhaust).

Douglas Gilbert (1):
  scsi_debug: delay fix

 drivers/scsi/scsi_debug.c | 72 ++++++++++++++++++++++++++++++-----------------
 1 file changed, 46 insertions(+), 26 deletions(-)

-- 
2.14.1