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SubjectRe: [PATCH] New dcache / inode hash tuning patch
> I wonder what would happen if you reordered the chains moving a 'found'
> dentry to the front of the chain? If this could be done without
> excessive locking it might help keep hot entries quickly accessable.
> This operation should be cheaper given you are using hlists.

You would need to fetch a spinlock for LRU, while the current lookup
runs completely lockless.

-Andi
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