taskSoftware Patents examples - Tasks: task #222, Withdrawl of Open Source NDS...

 
 

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task #222: Withdrawl of Open Source NDS Project/NTFS/M2FS forLinux

Submitted by:  Hugo Gayosso <hgayosso>
Submitted on:  -  
 
Category:  Patent Database Should Start On:  Wed 06 Jun 2001 04:00:00 AM UTC
Should be Finished on:  Sun 10 Jun 2001 04:00:00 AM UTC Priority:  5 - Normal
Status:  None Privacy:  Public
Percent Complete:  Any Assigned to:  Alessandro Rubini <rubini>
Open/Closed:  Open Effort:  0.00

Thu 07 Jun 2001 03:56:55 AM UTC, comment #1:

From: Richard Stallman <rms@gnu.org>
Subject: Patent covering sendfile
To: -email is unavailable-
Date: Wed, 10 Jan 2001 17:39:29 -0700 (MST)
Reply-to: -email is unavailable-

> I know little about it. I believe that Microsoft have a patent on the idea
> behind the sendfile() system call - sending a large amount of data from a
> file without continuous context switches to userspace for read() then
> write().
>
> Can you point me at someone who knows more about this?

Not really, but the patent in question is:
http://www.delphion.com/details?pn=US05845280__

I looked at the patent and it really does cover the sendfile
system call.

It seems unlikely that nobody did this before 1995. I suspect that
similar ideas can be found in the past. But I don't remember
one specifically.

Hugo Gayosso <hgayosso>
Project Administrator

 

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