Re: [patch] x86: some lock annotations for user copy paths
From: Ingo Molnar
Date: Wed Sep 10 2008 - 07:50:59 EST
* Ingo Molnar <mingo@xxxxxxx> wrote:
> but i think it should be a single primitive sprinkled around,
> might_fault(), which would be something like:
>
> > > + might_sleep();
> > > + if (current->mm)
> > > + might_lock_read(¤t->mm->mmap_sem);
>
> that way it's a lot less visually intrusive as well.
in any case i've applied the current patches to tip/core/locking:
c10d38d: x86: some lock annotations for user copy paths
76b189e: lockdep: add might_lock() / might_lock_read()
to see the fallout. The cleanup can be done after that.
( Nick, i've added your Acked-by to 76b189e - let me know if you dont
want that. )
Ingo
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