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SubjectRe: [RFC] enable FUA support in libata
On 04/13/2012 04:11 AM, Zheng Liu wrote:
> Hi Jeff and list,
>
> Recently I met a problem about FUA support of SATA disk. In my machine,
> it has a SATA disk that supports FUA feature. But after system starts
> up, it displays that the disk cannot support FUA from dmesg.
>
> I notice this commit (c3c013a2). It disables FUA support in all of SATA
> disk. But the commit log is too simple to know why we should disable
> FUA support in libata. Could you please explain it? Thank you.

FUA support in the block layer wanted speed and guarantees that early
FUA drives were simply not providing.





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