> I am referring to the buffer cache on the disks. There will be a need to
> flush/force write completion of data to the disk before power down if I
> enable the intelligent write-caching in the hardware.
If you do this then you won't be able to use IDE for journalling fs's. Before
we can do cachable re-ordered writes on the device itself we have to
implement store barrier points in the disk request queues so that the kernel
can stop the drive re-ordering when it is not safe too
> Do if something exists, what do I need look for or hook to issue flush
> cache during a halt/reboot event?
Read the DAC960 driver for one
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