On Thu, Mar 13, 2014 at 12:14 PM, Linus Torvalds
<torva...@linux-foundation.org> wrote:
> Maybe it uses use_mm just to increment the usage count. Which is bogus, and
> it should just "get" it instead, but whatever.
>
> On my phone, so I can't check the details.
Ok, no longer on my phone, and no, it clearly does the reference count with a
atomic_inc(&work->mm->mm_count);
separately. The use_mm/unuse_mm seems entirely specious.
Maybe it has some historical meaning to it.
Linus
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