BUG: zero-copy mode of vloopback module on Linux kernel >2.6.32

the vloopback module can be initialized to work in zero-copy mode. When client has issued an ioctl pusher will receive a SIGIO signal.

Right now, when client issues an ioctl, the SIGIO is sent but never arrives because vloopback stores the wrong pusher PID.

The solution is quite easy: change vloopback.c:489: loops[nr]->pid = find_pid_ns(current->pid,0); to: loops[nr]->pid = find_vpid(current->pid);

This has been tested on >2.6.31 and is working well.

Paste in your error messages, config settings, terminal window output etc in this text field.

Environment

Motion version:	3.2.12
ffmpeg version:
Shared libraries:	ffmpeg, mysql, postgresql
Server OS:

-- RaulFajardo - 02 May 2011

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