Re: Proposal: Use hi-res clock for file timestamps

[Andi Kleen]

>  - nfsd updates it whenever it reads an mtime out of an inode that matches
>    current_fs_time to the granularity of 1/HZ.

That means you have a very very hot cache line on a larger system
if there are a lot of mtime changes. Probably a bad idea.

-Andi
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