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    SubjectRe: [PATCH] new system call mknod64
    On Mon, Apr 21, 2003 at 11:22:51AM -0700, Linus Torvalds wrote:
    > Actually, we still do it for both block _and_ character devices.
    > Look at "nfs*xdr.c" to see what's up.

    Just think s/major/dev_lo/g and s/minor/dev_hi/g. This is the
    represantation for a legacy protocol. Just because fat thinks
    of a filename as 8+3 Linux filenames don't have to be that format.

    > The fact that the kernel internally has generalized it away doesn't
    > matter. Any kernel virtualization of the number still _has_ to account for
    > the fact that it's a real thing.
    > Put another way:
    > 0x0000000000000101
    > _has_ to open the same file as
    > 0x0000000100000001
    > because otherwise the kernel virtualization is broken (since they will
    > look the same to a user, and they will end up being written to disk the
    > same way).

    Umm, no. You're far to major/minor biased to realized live get a lot
    sipler for use if we don't do any complicated mapping of old dev_t
    to the larger dev_t. With the proper ranges we can just map it
    numerically 1:1 to the new dev_t. Yes, that means it's all in one
    new "major". But who cares?

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      Last update: 2005-03-22 13:34    [W:0.020 / U:41.404 seconds]
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