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SubjectRe: IDE Floppy support for IOMEGA Zip Drive broken in 3.16 -> 3.17 transition
Hi Sergio,

On Tue, Aug 18, 2015 at 09:44:28AM +0200, Sergio Callegari wrote:
> Hi,
>
> I have bisected the issue down to
>
> [045065d8a300a37218c548e9aa7becd581c6a0e8] [SCSI] fix qemu boot hang problem
>
> Bisecting has been a painful job due to the fact that the bug may show only
> many hours after the system boot.
>
> The commit above in fact is not the culprit, but a fix to an issue that was
> hiding the real bug on my system. See
>
> http://marc.info/?l=linux-kernel&m=143973820612978&w=2
>
> The real issue is with sata host lock and seems to be biting a few other
> people as well
>
> https://bbs.archlinux.org/viewtopic.php?id=189324
>
> A patch fixing the issue was sent to the LKML back in Nov 2014 by Christoph
> Hellwig (who is reading in CC)
>
> https://lkml.org/lkml/2014/11/20/581
>
> I have tested the patch and it works for me.
>
> What is expected to happen now?

As mentioned in that thread we need more input from the libata people
on what kind of race this is papering over.


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