On Wed, Oct 7, 2009 at 11:36 AM, vichy <vichy.kuo@xxxxxxxxx> wrote:
Dear all:
I try to pass the content of file,1G, to kernel driver for operation
and then return the result back to application.
My questions are:
1. The only way I can use is copy_from_user? If so, does it have the
size limitation?
2. I don't want my application pending on the I/O and is there any
smart way to let the application know when driver finishes its job?
appreciate your help,
vichy
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Please read the FAQ at http://kernelnewbies.org/FAQ
This link describes many methods for these kind of use cases:
http://people.ee.ethz.ch/~arkeller/linux/kernel_user_space_howto.html
Regards,
Sandeep.
