ext2 reservation windows

[zilinc]

Issue by ahixon Thu Apr 9 17:58:24 2015 Originally opened as https://github.csiro.au/ts-filesystems/Cogent/issues/78

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Don't know if we want this. Shouldn't be too much harder to add, but our performance looks okay at the moment? As such, not targeting camera ready at the moment.

Does require mucking around with the red-black tree ADTs though...

[zilinc]

Comment by ahixon Fri May 15 15:32:19 2015

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On Linux, note that whenever we modify the reservation windows, we lock the truncate mutex.

We need to ensure same behaviour in our implementation, if we decide to implement this.