> > i don't think genfs_nolock is bad at all.
> 
> ?? Faking locking is good?

it's good in some cases because
it allows filesystems to choose its own locking strategy.

> Changing how we do locking, however, I can see. I also know that other
> OSs, like Solaris, don't do the external locking we do; all the locking is
> done in the file system. I'm sure there probably is something we can learn 
> from them. However I'm not sure if it's really worth all the churn that 
> would imply.

i meant, "vnode lock removal == transition to fs-internal locking".
sorry for confusing.

YAMAMOTO Takashi