[Linux-cluster] Re: GFS, what's remaining

[Andrew Morton]

David Teigland <teigland at redhat.com> wrote:
>
> On Mon, Sep 05, 2005 at 01:54:08AM -0700, Andrew Morton wrote:
> > David Teigland <teigland at redhat.com> wrote:
> > >
> > >  We export our full dlm API through read/write/poll on a misc device.
> > >
> > 
> > inotify did that for a while, but we ended up going with a straight syscall
> > interface.
> > 
> > How fat is the dlm interface?   ie: how many syscalls would it take?
> 
> Four functions:
>   create_lockspace()
>   release_lockspace()
>   lock()
>   unlock()

Neat.  I'd be inclined to make them syscalls then.  I don't suppose anyone
is likely to object if we reserve those slots.