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SubjectRe: [PATCH] Scalable page cache
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   From: Ingo Molnar <mingo@elte.hu>
Date: Mon, 26 Nov 2001 18:22:25 +0100 (CET)

The problem with the tree is that if we have a big, eg. 16 GB pagecache,
then even assuming a perfectly balanced tree, it takes more than 20
iterations to find the page in the tree.

His tree is per-inode, so you'd need a fully in ram 16GB _FILE_ to get
the bad tree search properties you describe.

I like his patch, a lot.
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