* splice_read() for device drivers?
@ 2009-04-19 16:09 Leon Woestenberg
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From: Leon Woestenberg @ 2009-04-19 16:09 UTC (permalink / raw)
To: linux-kernel
Hello,
I have a device driver for data acquisition that currently exposes a
character device. The device driver performs DMA transfers directly
into/from user space on read/write().
If I want the driver to support splicing, must I implement
splice_read/write() ops? Can I make them directly DMA into the splice
pipe buffer pages?
I found no current implementation of splice_read/write(), except for
filesystem drivers.
Is there a write-up on this or a reference implementation? Any work in
progress for LDD4 or such?
Regards,
--
Leon
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