On Thu, Sep 28, 2006 at 09:47:27PM +0200, Mattia Dongili wrote:
> On Thu, Sep 28, 2006 at 08:14:32PM +0200, Petter Reinholdtsen wrote:
> > To make some writable tmpfs available to those in need of such system,
> > and to avoid using /dev/shm/ which is reserved for the shm-functions,
> > I just uploaded sysvinit version 2.86.ds1-26. It will mount a tmpfs
> > on /lib/init/rw/ that can be used instead. If /lib/init/rw/.ramfs
> > exist, that mount point is a tmpfs. I'm not sure if this last change
> > will make it into Etch or not, but I hope so, to solve any problems
> > with packages previously using /dev/shm/ as a generic tmpfs file
> > system.
>
> Well, I'd actually prefer if you could remove the noexec flag from
> /dev/shm. I understand the security reasons given in the bugreport but
> I'd prefer avoid having to deal with one more Debian-only (is it?)
> thing given the soon to come general freeze.
UML needs a non-noexec place to keep a file that will be used as its
physical memory. A tmpfs mount is greatly preferred for performance
reasons as well as tmpfs being the only filesystem supporting
MADV_REMOVE, which is used for memory hotplug.
Jeff
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