[ofa-general] Re: [PATCH 4/4] [RFC] IPoIB/cm: Add connected mode support for devices without SRQs

[Roland Dreier]

 > I think I have a clue as to what this could be. I suspect this problem is 
 > not related to IB at all. While experimenting with various things, my 
 > make crashed the system indicating a bug in cache_alloc_refill() 
 > called by __kmalloc(). The stack trace had ext3 routines in it.
 > 
 > I am guessing this may be a manifestation of the assorted things in the
 > git tree that I pulled. However, the 2.6.23 (and 2.6.23.1) tar balls from
 > kernel.org do not have the napi stuff in it. Should I go ahead and patch the
 > napi stuff to the 2.6.23.1 tree and try again?

You could try that, although it sounds pretty painful to come up with
the right set of NAPI changes.  Another thing to try would be to pull
my for-2.6.25 branch, which has slightly updated non-srq changes in it
(I fixed a couple of minor things0 and is also updated to Linus's
latest tree.

If you are seeing instability with that tree then it is definitely
worth tracking down, since those are bugs that need to be fixed for
2.6.24 whether they are IB-related or not.

Out of curiousity, are you using SLAB or SLUB?  I see that the system
I've been doing most of my testing on is using SLAB, maybe I'll try
switching to SLUB.

 - R.