Messages in this thread | | | Subject | Re: ext3-0.0.2e released | From | "Juan J. Quintela" <> | Date | 31 Jul 2000 23:21:44 +0200 |
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>>>>> "daniel" == Daniel Phillips <news-list.linux.kernel@innominate.de> writes:
Hi
daniel> Phase tree is my terminology. In my previous post I failed to mention a much daniel> bigger reason why phase tree is not shadow paging: phase tree does not use a daniel> shadow page table. Instead, it uses a tree where the differences between one daniel> commit phase and the next generate a minimal set of new nodes, and only these daniel> need to be written to disk.
If you have a good implementation of shadow paging, you are supposed to write to disk the minimun amount of data possible, i.e. only the things that have changed/are new. The method of writing the new data to free blocks and then change only the root is a known and used mechanism in shadow page implementations.
Later, Juan.
-- In theory, practice and theory are the same, but in practice they are different -- Larry McVoy
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