locking in a device driver

Dinesh Nair dinesh at alphaque.com
Wed Nov 2 12:55:47 PST 2005

On 11/03/05 04:27 M. Warner Losh said the following:
> that this is the case: sleep in an ioctl, and the entire process hangs
> until the ioctl returns.

which is probably what's happening in my case. i've got 4 threads spun off, 
and one thread reads what the other writes and vice versa. after writing, a 
thread goes off into an ioctl or a read where a tsleep() is executed. this 
would block the reader thread as well if libc_r were to be used, as is what 
i am using.

Regards,                           /\_/\   "All dogs go to heaven."
dinesh at alphaque.com                (0 0)    http://www.alphaque.com/
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