How to prevent a module from unloading when in used

[Chetan Nanda]

On Mon, Jul 21, 2014 at 9:52 AM, Greg KH <greg at kroah.com> wrote:

> On Mon, Jul 21, 2014 at 09:09:02AM +0530, Chetan Nanda wrote:
> > I try to debug the hang when unloading of driver. I am using kernel v3.10
> > and it hangs in 'wait_for_zero_refcount'.
> > I checked that this function has been removed in kernel 3.13.
> > But I am not able to find the patch for this change.
> >
> > Is there an easy way to find the patch which cause removal of wait from
> > module unloading in v3.13.
>
> You have the full git tree, it should be very easy to find, you don't
> need help from me.
>
> Hi Greg,

Thanks for your mail,

I have found a thread with the discussion and a patch for removing the
wait_for_zero_refcount from module unloading, But not able to find this
patch being merged on v3.13. (have checked all patches between 3.12 and
3.13)
http://www.gossamer-threads.com/lists/linux/kernel/1783584?do=post_view_threaded#1783584

Thanks,
Chetan Nanda


> good luck,
>
> greg k-h
>
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