Re: 2.6.19-rc3 system freezes when ripping with cdparanoia at ioctl(SG_IO)

[Monty Montgomery]

On 11/9/06, Jeff Garzik <jgarzik@xxxxxxxxx> wrote:

> Mapping 'bidirectional' is a bit difficult.

SGIO_TO_FROM_DEVICE is *not* bdirectional!

> From the header that defines it:

#define SG_DXFER_TO_FROM_DEV -4 /* treated like SG_DXFER_FROM_DEV with the
                                  additional property than during indirect
                                  IO the user buffer is copied into the
                                  kernel buffers before the transfer */

That's pretty darned clear.  TO_FROM_DEVICE is a straight-up read.
Why the continuing confusion of what this mode is for?

> Given that there are stupid apps/libs out there in the field with this
> behavior, even if the apps are fixed I think we are stuck with the
> stupidities.

*ahem*

Monty
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