Andrew Morton wrote:
> Jeff Garzik <jgarzik@pobox.com> wrote:
> 
>>The only really notable changes in -bk3 -> -bk4 are the signal changes, 
>>something in mm/vmscan.c.
>>
> 
> 
> I'd be suspecting the vmscan.c change, but we allegedly fixed that later on.
> Can you try reverting it?  (Can't reproduce the problem here)


Verified -- reverting the vmscan.c changeset (attached) fixed my hang.

This hang is definitely present from -rc3-bk4 through -final, so a fix 
is not presented in mainline.

	Jeff