Does the SG interface use the buffer cache (therefore for RAW devices)

tzeruch@ceddec.com
Thu, 5 Jun 1997 17:34:51 -0400

I remember seeing a long thread about raw devices, but I know that I can
read audio CDs, and they don't have a 2^N buffer size, and that they use
the /dev/sg[a-g] interface.

I was wondering if sending reads and writes via this interface would
avoid the internal caches and thus allow raw devices via a back-door?