Great, work Warner, thanks! Small note, though. The CAM_IOSCHED_NETFLIX
seems like a quite poor name for a kernel option. IMHO there is no good
reason for polluting it with the name of the company that sponsored the
development. I don't think we have any precedents of doing this unless the
option is related to a piece of hardware that the company makes, and it's
not the case here. Apart from "coolness" factor as far as I understand that
_NETFLIX suffix does not give any tangible benefit for anybody reading
kernel config and trying to understand what this option actually does.
CAM_IOSCHED_SSDNG or something would be better IMHO. Just my $0.02.


On Thu, Apr 14, 2016 at 3:42 PM, Warner Losh <> wrote:

> The CAM I/O scheduler has been committed to current. This work is described
> in though the
> default scheduler doesn't change the default (old) behavior.
> One possible issue, however, is that it also enables NCQ Trims on ada SSDs.
> There are a few rogue drives that claim support for this feature, but
> actually implement data corrupt instead of queued trims. The list of known
> rogues is believed to be complete, but some caution is in order.
> Warner
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