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