J. Bruce Fields <bfields@xxxxxxxxxxxx> wrote:
> > + if (!afs_lock_manager) {
> > + afs_lock_manager = create_singlethread_workqueue("kafs_lockd");
> > + if (!afs_lock_manager)
> > + return -ENOMEM;
> > + }
> > + return 0;
>
> Doesn't this need some locking?
Oops. Yes. It used to be inside the lock_kernel() section, but has since
escaped.
> Do you allow upgrades and downgrades? (Just curious.)
AFS does not, as far as I know. Upgrades are dangerous anyway as you can get
deadlock quite easily.
> > + /* if we've already got a readlock on the server and no waiting
> > + * writelocks, then we might be able to instantly grant another
>
> Is that comment correct? (You don't really test for "waiting
> writelocks", do you?)
Locally, yes. 'if (list_empty(&vnode->pending_locks))' covers it quite
handily. I can't do anything about checking the server.
David
-
To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
