Re: SG_BIG_BUFF question/enhancement

Rik van Riel (
Fri, 15 May 1998 02:52:14 +0200 (MET DST)

On Thu, 14 May 1998, Simon Burley wrote:

> I originally posted this to the linux-scsi list, but had no response.
> Has anyone yet put SG_BIG_BUFF above 32K?

Not that I know of, but maybe some bozo actually tried :-)

> I'm (trying) to write a film recorder driver, and due to the limited
> intelligence of the device, it needs all print data in one lump after
> the SCSI command. Realistically, I need to get SG_BIG_BUFF to around
> 128MB.

This _is_ going to be a problem. The run-time allocator can't
do larger allocs than 128kB, and even these are troublesome :(

You might want to look in the bigphysarea patch however, and
there's a link to a page from an Italian guy (Alessando ??)
on my homepage... (2:51AM so I won't check:-)

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