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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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