# Linux SCSI generic enhancements

Nick Lamb (njl98r@ecs.soton.ac.uk)
Wed, 31 Mar 1999 00:02:42 +0100 (BST)

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I've just noticed (those who download-compile-reboot-repeat have presumably
seen this some time ago) that the Alan Cox -ac versions of the Linux kernel
now include the enhanced SG driver described at
http://www.netwinder.org/~dougg/
BTW When I looked Douglas had a much better grasp of SCSI than of HTML :(

In theory this should buy SANE (via its nicely unified SCSI infrastructure)
a better chance of talking to the scanner at all on heavily loaded machines
(where the old sg driver was likely to protest ENOMEM) especially with PCI
Even better, there is no SG_BIG_BUFFER stupidity (!)

I suspect that for some people this might improve performance too (I have
no bone to pick about SANE SCSI performance, since for me it already beats
existing Windows software)

The new driver is mostly compatible with the old 2.0.x (and before) driver
and will presumably merge into Linus' 2.2.x in the next few months. So
would anyone who currently has ENOMEM troubles like to try it, and report
back if it helps? I guess the easiest way to try it is to grab 2.2.5-ac1
from Alan Cox's site.

Nick.

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