linux-kernel - How to avoid data copies in a driver ?

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Message-ID: <38b2ab8a0805141254i2437a0ccq130b914748f53db0@mail.gmail.com>
Date:	Wed, 14 May 2008 21:54:03 +0200
From:	"Francis Moreau" <francis.moro@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: How to avoid data copies in a driver ?

Hello,

I'd like to optimize my driver, which receives data through a fifo and gives
them to a user space application. In turns this application moves this data
into a file.

To avoid several useless copies, I'd like the application to pass to the driver
a  file descriptor (?) to  the driver and then the driver can directly move the
received data to that file.

Could anybody give me some example of such scheme ?

Thanks,
-- 
Francis
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