On Thu, Nov 28, 2013 at 6:07 PM, Al Viro <viro@xxxxxxxxxxxxxxxxxx> wrote:
> Thus the
> comment about unbalanced dput() somewhere; the question is _where_ had
> that dput() been.
Clearing the LOOKUP_RCU bit is what I was looking at, because doing
that without doing the proper successful lockref_get_not_dead() ends
up being equivalent to missing a dget(), not an extra dput(). Which
was why I was looking at unlazy_walk() -> terminate_walk().
But I really don't see anything wrong. That was the only really
obvious sequence where you changed things. Everything else seems to be
a pretty 1:1 conversion.
Linus
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