Re: [PATCH 4/5] uprobes: kill copy_vma()->uprobe_mmap()

[Peter Zijlstra]

On Sun, 2012-07-08 at 22:30 +0200, Oleg Nesterov wrote:
> And why this uprobe_mmap() was added? I believe the intent was wrong.
> Note that the caller is going to do move_page_tables(), all registered
> uprobes are already faulted in, we only change the virtual addresses.
> 

I think it was because of the copy_vma + do_munmap. Since do_munmap()
should be doing a put on the uprobe, we need an extra get to balance.

That said, I cannot actually find the uprobe_munmap() from do_munmap(),
but that might be due to lack of wakefulness etc..
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