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    SubjectRe: [PATCH] Attempt to hard link across filesystems results in un-unmountable filesystem (fwd)

    On Mon, 4 Dec 2000, Tigran Aivazian wrote:

    > It is true that your patch fixes the problem as reported but let us look
    > one step deeper into the problem. Linux supports multiply mounted
    > instances of a filesystem and the check in sys_link() comparing the
    > mountpoints would refuse (with cross-device link error) linking between
    > them. This is correct. However, one level down, inside vfs_link() we also
    > check for ->i_dev match and that seems unnecessary, now that (with your
    > patch) link(2) would work correctly anyway.
    > Therefore, I propose a slightly modified (tested under
    > 2.4.0-test12-pre4) version of the patch. What do you think? My philosophy
    > is -- since you made this feature work properly you should make it work
    > efficiently too and that means removing redundant code.

    Tigran, think about the uses from knfsd.

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