Tejun Heo wrote:
SCSI always uses the smallest command it can use, so we're safe. Most other commands are issued directly from the userland and it's their responsibility not to feed disallowed commands to a device (or we need more advanced filter). Anyways, this has never been guaranteed because the limit is host wide. So, I'm for setting it to 16. Jeff, what do you think?
Like I just noted in another email, the limit is really on the /device/ side. In theory the user could plug in a 16-byte ATAPI device and a 12-byte ATAPI device to the same host.
We should be able to safely raise the limit to 16-byte for most host controllers. Note I said "most". The bitch will be figuring out which host controllers do not like 16-byte CDBs.
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