Remove revert_to_private_mode() member which would require MAP_FIXED to work reliably.
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…D to work reliably.
heifner
approved these changes
Oct 26, 2023
spoonincode
approved these changes
Oct 26, 2023
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The reason I initially added this
revert_to_private_mode()(so we'd load a snapshot inmappedmode, and revert tomapped_privatemode after the snapshot is loaded), was that I hoped that we would only touch a few pages in normal mapped_private functioning.The snapshot loading seemed a bad case where all state db pages containing data would be touched.
However, even in normal syncing, most of the pages are dirty after a few minutes, so the remap optimization is not worth it I believe.
In addition, to work correctly, it would require use the linux specific
mmap(...MAP_FIXED)api instead of the portable boost interprocess mmap interface.This PR is just unused code removal.