On Fri, 20 Apr 2001, Jeremy Fitzhardinge wrote:
> This is a fix for a potential deadlock in autofs4's expire routine.
> It tries to use dput() while holding the dcache_lock. This isn't a
> problem in principle since dput() should only try to take the dcache_lock
> when the counter makes a transition to zero, which can't happen in
> this case. Unfortunately the generic (and only) implementation of
> atomic_dec_and_lock always takes the lock, so deadlocks.
Frankly, I'd rather add dput_locked() in dcache.c. The bug is real and
since autofs4 is not the only place like that... I'll look into that
stuff.
Al
