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    SubjectRe: [PATCH] cowlinks v2
    Pavel Machek wrote:
    > > > Could you not change it back to a normal inode when refcount becomes 1?
    > >
    > > You can only do that if the cowid object has a pointer to the last
    > > remaining reference to it. That's possible, but more complicated and
    > > would incur a little more I/O per cow operation.
    >
    > You'd have to have pointers to all references to it... because you
    > can't tell in advance which one will be the last to go away.

    Exactly. Each of the cow pointers would need to be linked in a doubly
    linked list containing them all.

    -- Jamie
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