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    SubjectRe: sysfs regression: wrong link counts
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    Alan Cox <alan@lxorguk.ukuu.org.uk> writes:

    >> Isn't there some other "proper" way of doing this in userspace, or is
    >> this really the correct way?
    >
    > You can look at the S_IFMT bits and stuff however link count indicating
    > number of subdirectories is a standard Unix thing and used by many quite
    > mundane tools as an optimisation.

    Those tools for a decade or better all know to treat nlink == 1 as the
    case where the optimization does not apply.

    On a traditional unix filesytem the most common place you will see nlink
    == 1 is when the link count overflows. extN with > 65536 subdirectories
    as I recall.


    Eric


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