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SubjectRe: Any SMP people out there with SCSI CD ROMs?


On Wed, 10 Jun 1998, Keith Owens wrote:
>
> CD recorder on ASUS dual P166, pure SCSI. Which version of 105,
> vanilla, ac1, ac2? What symptoms? I'll take a look tonight.

It will happen with all versions, the ac patches don't touch the SCSI
subsystem.

The symptoms are a very noticeable and complete hard lockup, it appears.
Which is extremely easy to believe if something is leaving the
io_request_lock locked (or tries to get it recursively). That would
certainly lock the machine completely.

Which is why I asked for somebody who felt comfortable about spinlocks.
Any help is appreciated, even just reports of how to reliably make this
happen (for all I know it may be limited to just one specific driver), but
let's be careful out there..

Linus


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