[ale] inode change after vi a file ?

[jjj863 at gmail.com (Jerry Yu)]

To my surprise, the inode #  changes as long as I do ":w" inside vi.  This
holds true on a stock installation of CentOS 4.1 and CentOS 4.3 (equivalent
of RHEL 4.* AS) . Anyone knows this is a new feature? If it is a feature,
I'd like to learn ways to turn it off.

[zyu at saturn ~]$ date > blah; ls -i blah; vi blah; ls -i blah
688427 blah
692394 blah
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