lock_kernel() ?

[Armin Schindler]

Hi all,

  I'm writing a driver which uses also kernel_threads
and file operations (/dev and /proc).

I was not able yet to find out why and when to use
[un]lock_kernel()

Can someone please give me a hint where to find some
infos in using lock_kernel() for 2.2 and 2.4.

What exactly is/must be protected by lock_kernel() ?

Thanks,

Armin