[PATCH] maple_tree: Add dead node check in mas_dup_alloc()

[Boudewijn van der Heide]

> > > Surely this should just be a lockdep assertion that the appropriate
> > > locks are held?
> > >
> > Just to confirm: do you want me to remove the original runtime check entirely
> > and replace it with a lockdep_assert(), or do you want both?
> > If it's only the assertion,

> Please do not include any runtime checks in this change - Just the
> lockdep_assert().

> > that would mean that production builds won't enforce the check, right?
> >
> > For v2, should I add a Fixes: line and Cc: stable,
> > or should i leave it out?

> This does not need to be backported and does not fix anything.  It's an
> attempt to protect the user from shooting their own foot off by using
> the interface incorrectly.

> The fact that no one in the tree uses it incorrectly means that any
> backport would be for the benefit of out-of-tree drivers, which we do
> not support.

Thanks for the help and clarification! I will send v2 with just the assertion,
as suggested.

Thanks,
Boudewijn