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    SubjectRe: [PATCH] private mounts
    Miklos Szeredi wrote:
    > > Actually, in terms of complexity, it's not much different from using
    > > bind mounts.
    >
    > As has been suggested by Pavel, bind mounting foreign namespaces could
    > just be done with a new bind_fd(fd, path) syscall and file descriptor
    > passing with SCM_RIGHTS.

    Yes, he's right.

    But you don't need a new system call to bind an fd.

    "mount --bind /proc/self/fd/N mount_point" works, try it.

    > That sounds to me orders of magnitude less complex (on the kernel side
    > at least) than sb sharing.

    In terms of what happens in the kernel, they're almost exactly the
    same: either way, a super block ends up shared by two mounts. That's
    what I meant.

    I agree that in terms of what userspace has to do, if just binding
    works that's simpler. And it does seem to work with the above mount
    command.

    -- Jamie
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