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4 commits

Author SHA1 Message Date
David Goldblatt
68a1666e91 hpdata: Rename "dirty" to "touched". 
This matches the usage in the rest of the codebase.
 2021-02-04 20:58:31 -08:00
David Goldblatt
30b9e8162b HPA: Generalize purging. 
Previously, we would purge a hugepage only when it's completely empty.  With
this change, we can purge even when only partially empty.  Although the
heuristic here is still fairly primitive, this infrastructure can scale to
become more advanced.
 2021-02-04 20:58:31 -08:00
David Goldblatt
70692cfb13 hpdata: Add state changing helpers. 
We're about to allow hugepage subextent purging; get as much of our metadata
handling ready as possible.
 2021-02-04 20:58:31 -08:00
David Goldblatt
d9f7e6c668 hpdata: Add a test. 
We're about to make the functionality here more complicated; testing hpdata
directly (rather than relying on user's tests) will make debugging easier.
 2020-12-07 06:21:08 -08:00