RE: 2.2.16 Alpha: "Fix SMP rescheduling with lock held"

["Greg Lindahl" <glindahl hpti com>]

OK, so I finally got a node to hang:

sched.c:30 spinlock stuck in pbs_mom at fffffc000032cd64(1) owner
a.out.system14. at fffffc000032cd64(0) sched.c:30
sched.c:30 spinlock stuck in pbs_mom at fffffc000032cd64(1) owner
a.out.system14. at fffffc000032cd64(0) sched.c:30
sched.c:30 spinlock stuck in pbs_mom at fffffc000032cd64(1) owner
a.out.system14. at fffffc000032cd64(0) sched.c:30

This is printed once every few minutes on the console of the hung system.
There are two copies of a.out.system14. running.

The kernel is the RedHat-compiled 2.2.14-6.0smp.

My question is: is this bug fixed by the 2.2.16 patch to alpha/smp.c ? I
suppose I should try it, but it's nice to understand these things well
enough to know...

-- g