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Unmapped page cache control

Unmapped page cache control

Posted Jan 4, 2011 21:38 UTC (Tue) by Russ.Dill@gmail.com (guest, #52805)
Parent article: Unmapped page cache control

It seems like this could be much easier, at least for the read-only page case and work similarly to the page merging stuff. If the IO driver does DMA then rather then actually copying data from the virtual hardware into the page the host's page containing that data and the guests page that should contain the data could get merged. If either writes to the page, it splits.


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