Re: I request inclusion of SAS Transport Layer and AIC-94xx intothe kernel

[Andrew Patterson]

On Mon, 2005-10-03 at 18:29 +0200, Marcin Dalecki wrote:
> On 2005-10-03, at 15:54, Luben Tuikov wrote:
> 
> > On 09/30/05 19:42, Marcin Dalecki wrote:
> >
> >> On 2005-10-01, at 00:01, Luben Tuikov wrote:
> >>
> >>
> >>> Why should synchronization between Process A and Process B
> >>> reading storage attributes take place in the kernel?
> >>>
> >>> They can synchronize in user space.
> >>>
> >>
> >>
> >> In a mandatory and transparent way? How?
> >
> > Futex, userspace mutex, etc.  All through a user
> > space library interface.
> 
> They give a means of possible synchronization between beneviolent  
> users, but not a mandatory lock on the shared resource.
> 

Nor do they protect against external events, such as disk
insertion/removals, and someone kicking a cable.


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