On Sat, Jul 07, 2007 at 11:18:59PM +0200, Bodo Eggert wrote: > On Sat, 7 Jul 2007, Jan Engelhardt wrote: > > On Jul 5 2007 19:08, H. Peter Anvin wrote: > > > >> BTW: Is it possible to mount a tmpfs on / before extracting the cpio? > > > > > >Not in the stock kernel. There have been some patches floating around > > >for that, I think. > > > > What would it buy? rootfs is a tmpfs, is not it? > > As far as I understand, it is a ramfs aka. non-swappable tmpfs without any > limit and including a chance of DoSing the system. > > Since I'm toying with root-on-initcpio, I'm looking for things that might > make the task some easier. > > Currently I'm thinking about changing the root=initramfs to root=tmpfs and > additionally mounting a tmpfs on / before unpacking the cpios. OTOH, this > seems to be a little bit messy. OTOH again, in _that_ boot code, nobody > should complain :)
Well, maybe it would be time to assign limits to ramfs. I have a patch for this in all my own 2.4 kernels that I use on appliances, network boot and bootable CDs. It was a bit tricky to get the limits to work well in 2.4 because it was not easy to track which pages were used by whom. But I presume that rmap in 2.6 should help a lot. If someone is willing to give this a try, here's the 2.4 patch : http://linux.1wt.eu/kernel/patches-2.4.34-wt1/pool/2.4.32-ramfs-limits-5 Regards, Willy - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
