Re: [PATCH 0/3] Synaptics - fix lockdep warnings

[Dmitry Torokhov]

On 9/14/06, Arjan van de Ven <arjan@xxxxxxxxxxxxx> wrote:
> >
> > I think it is - as far as I understand the reason for not tracking
> > every lock individually is just that it is too expensive to do by
> > default.
>
> that is not correct. While it certainly plays a role,
> the other reason is that you can find out "class" level locking rules
> (such as inode->i_mutex comes before <other lock>) for all inodes at a
> time; eg no need to see every inode do this before you can find the
> deadlock.

OK, I can see that. However you must agree that for certain locks we
do want to track them individually, right?

--
Dmitry
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