Messages in this thread | | | Date | Wed, 31 Jul 2002 17:07:40 -0400 | Subject | Re: BIG files & file systems | From | Jan Harkes <> |
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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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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