[parisc-linux] O_DIRECT on devices

[Matthew Wilcox]

On Thu, Jul 11, 2002 at 09:22:59AM +0100, Patrick Caulfield wrote:
> This works fine on Alpha & Intel but seems very unreliable on parisc for some
> reason. Sometimes it works, sometimes it oopses "do_page_fault() pid=2120
> command='lvm' type=15 address=0x00000001" and sometimes I just get back the
> wrong information (at least LVM thinks its wrong I haven't check in detail just
> what is up with it).

pid 2120 did a NULL pointer dereference ... you should be able to trace
it with the IAOQ, perhaps.  I'm not sure whether anyone's really played
with the O_DIRECT code yet, it could well be buggy on PA.  What you're
seeing sounds like bogus cache behaviour.

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