Re: [PATCH] replace SYSV shared memory with shm filesystem

[Christoph Rohland]

Alan Cox <[e-mail]> writes:

> > replaces/reuses the existing SYSV shm code so you now have to
> > mount the fs to be able to use SYSV SHM. But in turn we now have
> > everything in place to implement posix shm. This also obsoletes
> > vm_private_data in vm_area_struct.
> 
> Umm no. It obsoletes vm_private_data for existing merged file
> systems. The stackable file systems still need this field (cryptfs,
> lofs etc)

Hey, that's a pity :-( I liked this cleanup. Do they really need it?

> > Also it is now possible to do e.g. 'rm /dev/shm/*' instead of this
> >terrible 'ipcrm shm xx' :-)
> 
> Nice

Yup :-)

Greetings
		Christoph