On Tue, Jun 28, 2005 at 07:25:29AM +0900, YAMAMOTO Takashi wrote:
> > what lock protects ip->i_flag?  it's current the VOP_LOCK(),
> > but we can't acquire that lock in VOP_GETPAGES() due to
> > lock-ordering constraints.
> > 
> > -Chuck
> 
> i_flag is protected by kernel_lock.
> VOP_LOCK is not always held eg. when GOP_ALLOC -> ffs_balloc updates i_flag.

ok, I busted that when I did the UBC stuff then.
it was not my intent to protect anything with the global lock.
it would be good for us to avoid making this situation worse by
adding more usages that are protected only by the global lock.

-Chuck