fcntl F_SETLKW64 failing on Solaris

[Anton Blanchard]

> Just a warning - using --with-spinlocks can be very dangerous. If a smbd
> process abends holding a spinlock, all the smbd's will have to be restarted
> and the tdb cleared to remove it.
> 
> The same won't happen with fcntl tdb's.
> 
> Just a little touch of paranoia.... :-).

But samba never SEGVs Jeremy :) Yes there is no way out if something
dies with a spinlock. But if a process dies inside a critical region its
probably better to start from scratch, who knows what ugly things have
happened to the tdb by that stage.

Anton