Re: Another idea for simplifying locking in kernel/module.c

[Max Krasnyansky]

At 12:53 AM 1/7/2003 -0800, Adam J. Richter wrote:
>I wrote:
>>        Here is a way to replace all of the specialized "stop CPU"
>>locking code in kernel/module.c with an rw_semaphore by using
>>down_read_trylock in try_module_get() and down_write when beginning to
>>unload the module.
>>
>>        The following UNTESTED patch, a net deletion of 136 lines,
>
>        I am running that patch now on two computers.  It seems to
>be OK.
>
>        Rusty, I'd be interested in knowing what you think of the
>patch (likewise for other lkml readers).

We have to be able to call try_module_get() from interrupt context.

Max