On Mon, 22 Apr 2002, Jacques A. Vidrine wrote:

> On Mon, Apr 22, 2002 at 06:25:17PM +1000, Bruce Evans wrote:
> > I use the same patch.  Locking here is essentially equivalent to calling
> > panic() here (except it gives a more confusing panic message :-).
> :-)  That's a bit of an overstatement; my testing didn't catch it.  I

Yes; I forgot to write the clause about it only being equivalent to a
panic if certain options (mainly INVARIANTS) are configured.

> do see that falloc does lock the file descriptor table too, though ---
> I wonder how it ever worked.

INVARIANTS causes a check of an assertion that non-recursive locks
like fd_mtx aren't actually misused recursively.  The check causes more
panics than the misuse since the misuse is rarely fatal.  I may be
missing something since I rarely use INVARIANTS and haven't checked
that it causes the panic deterministically.


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