Re: [Kiobuf-io-devel] RFC: Kernel mechanism: Compound event wait
Jeff V. Merkey (email@example.com)
Tue, 6 Feb 2001 19:07:54 -0700
On Wed, Feb 07, 2001 at 02:06:27AM +0100, Ingo Molnar wrote:
> On Tue, 6 Feb 2001, Jeff V. Merkey wrote:
> > > I don't see anything that would break doing this, in fact you can
> > > do this as long as the buffers are all at least a multiple of the
> > > block size. All the drivers I've inspected handle this fine, noone
> > > assumes that rq->bh->b_size is the same in all the buffers attached
> > > to the request. This includes SCSI (scsi_lib.c builds sg tables),
> > > IDE, and the Compaq array + Mylex driver. This mostly leaves the
> > > "old-style" drivers using CURRENT etc, the kernel helpers for these
> > > handle it as well.
> > >
> > > So I would appreciate pointers to these devices that break so we
> > > can inspect them.
> > >
> > > --
> > > Jens Axboe
> > Adaptec drivers had an oops. Also, AIC7XXX also had some oops with it.
> most likely some coding error on your side. buffer-size mismatches should
> show up as filesystem corruption or random DMA scribble, not in-driver
Oops was in my code, but was caused by these drivers. The Adaptec
driver did have an oops that was it's own code address, AIC7XXX
crashed in my code.
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