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    SubjectRe: loopback on block device
    Please cc me if you have answers to this, I am not on the list. Thanks a 

    Lei Yang wrote:

    > Hello,
    > Here is a question for loopback device. As far as I understand, the
    > loopback device is used to mount files as if they were block devices.
    > Then Why I could do "losetup -e XOR /dev/loop0 /dev/ram0" ? Notice
    > that ram0 is not mounted anywhere and does not have a filesystem on
    > it. I've tried that command and there seems to be no error. I got
    > confused and looked into loop.c, it seems to me that a loopback device
    > should be associated with a "backing file", why would it work on a
    > block device anyway?
    > I'd appreciate your comments greatly!
    > TIA,
    > Lei

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