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    SubjectRe: BIG files & file systems
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    On Wed, Jul 31, 2002 at 01:16:20PM -0600, Peter J. Braam wrote:
    > Hi,
    >
    > I've just been told that some "limitations" of the following kind will
    > remain:
    > page index = unsigned long
    > ino_t = unsigned long

    The number of files is not limited by ino_t, just look at the
    iget5_locked operation in fs/inode.c. It is possible to have your own
    n-bit file identifier, and simply provide your own comparison function.
    The ino_t then becomes the 'hash-bucket' in which the actual inode is
    looked up.

    For the page_index, maybe at some point someone manages to cleanly mix
    large pages (2MB?) with the current 4KB pages. Very large files could
    then use the page_index as an index into these large pages which should
    allow for 9PB files (or something close to that).

    Jan
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