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

daemon@ATHENA.MIT.EDU (tzeruch@ceddec.com)
Thu Jun 5 18:07:28 1997

Date: 	Thu, 5 Jun 1997 17:34:51 -0400
From: tzeruch@ceddec.com
To: linux-scsi@vger.rutgers.edu, linux-kernel@vger.rutgers.edu
In-Reply-To: <Pine.BSI.3.96.970603112706.15325A-100000@navi.net>

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?



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