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Re: [Gnu-arch-users] problem with ,,inode-sigs optimization

From: David Brown
Subject: Re: [Gnu-arch-users] problem with ,,inode-sigs optimization
Date: Mon, 15 Sep 2003 22:35:42 -0700
User-agent: Mutt/1.5.4i

On Tue, Sep 16, 2003 at 02:11:25PM +0900, Miles Bader wrote:

>  (2) Don't keep per-revision state at all, just keep single per-version
>      state-file in ,,inode-sigs.  It would be slightly incorrect for
>      queries against older revisions, but that shouldn't matter, since
>      it will just cause a cache miss for those few files that are
>      different in older revisions (which usually isn't very many); it
>      doesn't seem like it could result in incorrect behavior.

It also might be handy to be able to reset the info once it is determine
that a file is, in fact, identical.  This would be the case if someone
edits a file, and then undoes the changes, and writes the result out.
Or a common scenario I do:

  - Delete all of the source files.
  - Extract a tar file of the next version of the distribution.
  - tree-lint, inventory, and what-changed to find out what happened.

Many of these files will remain the same, even though their inodes are
now different.


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