4GB I/O, cut 5

Hi,

Changes:

- merge 2.4.6-pre1 zone changes for zone-dma32-6
- correct qlogicfc can_dma_32 flag (Arjan van de Ven)

Arjan also reported that the kernel doesn't boot on a machine with 8GB of RAM, I'm suspecting the zone-dma32-6 changes. If someone has access to such a machine, please try it.

There are no bug fixes in this release either - apart from the above problem, no known bugs exists. I'll be donating a virtual beer for the first spotted bug.

The patch can be considered stable, it's received quite a bit of testing on highend hardware. Here's a plug from one such tester:

"Regarding performance of this patch, it is providing us with the highest aggregate throughput for reads of any of the recent kernels for multiple IOs - up to 185MB/s continuous through both controllers :)"

*.kernel.org/pub/linux/kernel/people/axboe/patches/2.4.6-pre1/

Jens Axboe