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    SubjectRe: pivot_root solved by patch to 2.4.22-pre7
    In gmane.linux.kernel, you wrote:
    >> the unshare_files change causes init to no longer share the same fd table
    >> with the other kernel threads. thus, when init closes or opens fds it does
    >
    > Ah yes.. because of do_basic_setup. Having /sbin/init sharing with
    > kernel threads doesn't actually strike me as too clever anyway although
    > none of them should be using fd stuff.
    >
    > In which case I guess we should call unshare_files directly before we
    > open /dev/console in init/main.c.

    Is this going to be fixed for 2.4.22? In -rc2, I still get this after
    pivot_root (I'm using pivot_root, but not initrd):

    halfoat:0:~ # umount /mnt
    umount: /mnt: device is busy
    halfoat:1:~ # lsof /mnt
    COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME
    keventd 2 root 0u CHR 5,1 21 /mnt/dev/console
    keventd 2 root 1u CHR 5,1 21 /mnt/dev/console
    keventd 2 root 2u CHR 5,1 21 /mnt/dev/console
    ksoftirqd 3 root 0u CHR 5,1 21 /mnt/dev/console
    ksoftirqd 3 root 1u CHR 5,1 21 /mnt/dev/console
    ksoftirqd 3 root 2u CHR 5,1 21 /mnt/dev/console
    ksoftirqd 4 root 0u CHR 5,1 21 /mnt/dev/console
    ksoftirqd 4 root 1u CHR 5,1 21 /mnt/dev/console
    ksoftirqd 4 root 2u CHR 5,1 21 /mnt/dev/console
    kswapd 5 root 0u CHR 5,1 21 /mnt/dev/console
    kswapd 5 root 1u CHR 5,1 21 /mnt/dev/console
    kswapd 5 root 2u CHR 5,1 21 /mnt/dev/console
    bdflush 6 root 0u CHR 5,1 21 /mnt/dev/console
    bdflush 6 root 1u CHR 5,1 21 /mnt/dev/console
    bdflush 6 root 2u CHR 5,1 21 /mnt/dev/console
    kupdated 7 root 0u CHR 5,1 21 /mnt/dev/console
    kupdated 7 root 1u CHR 5,1 21 /mnt/dev/console
    kupdated 7 root 2u CHR 5,1 21 /mnt/dev/console
    kjournald 64 root 0u CHR 5,1 21 /mnt/dev/console
    kjournald 64 root 1u CHR 5,1 21 /mnt/dev/console
    kjournald 64 root 2u CHR 5,1 21 /mnt/dev/console

    Jason
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