Uses the "lazy" madvise operation MADV_FREE on Linux (where supported) and the equiv. but eager MADV_DONTNEED operation on all other supported platforms.
AFAIK not feasible to unit test, as the OS provides no immediate confirmation of the effects of madvise.
Split from https://github.com/snazzy-d/sdc/pull/335 , but does not depend on it.
This feature permits the purging of an arbitrary run of dirty pages, rendering it clean, as requested in https://github.com/snazzy-d/sdc/issues/270 .
Uses the "lazy"
madviseoperationMADV_FREEon Linux (where supported) and the equiv. but eagerMADV_DONTNEEDoperation on all other supported platforms.AFAIK not feasible to unit test, as the OS provides no immediate confirmation of the effects of
madvise.Required by https://github.com/snazzy-d/sdc/pull/337 .