Messages in this thread | | | Date | Wed, 23 Nov 2005 03:38:25 +0100 | From | Johannes Stezenbach <> | Subject | Re: pivot_root broken in 2.6.15-rc1-mm2 |
| |
On Wed, Nov 23, 2005 at 02:15:45AM +0000, Al Viro wrote: > On Wed, Nov 23, 2005 at 01:07:28PM +1100, Neil Brown wrote: > > After putting in copious tracing printk, the offending test is: > > > > if (user_nd.mnt->mnt_parent == user_nd.mnt) > > goto out2; /* not attached */ > > > > If I remove this, it works (or seems to). > > Presumably the initial root file system is 'not attached'. But that > > shouldn't be a problem, should it? > > Initial root is root and will remain root, period. > > > Could this be related to the new shared mounts stuff??? > > No. And no, it's not going to change - any memory you win on killing > initramfs is not going to be worth the extra code needed to special-case > it. > > pivot_root() does work in chroot jail (including the one we get after > chrooting to "final" root), but that's all it does.
Just want to add that some nice person wrote Documentation/filesystems/ramfs-rootfs-initramfs.txt.
http://lwn.net/Articles/156098/ http://kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blob;h=b3404a0325967de5fdce4a29e879258075ede500;hb=4b4a27dff4e2d4cc2eac1cde31aede834a966a48;f=Documentation/filesystems/ramfs-rootfs-initramfs.txt
HTH, Johannes - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |