c6ca2b85a3e6e73674e210aee4ed69c4af2848e4 validation: do not wipe utxo cache for stats/scans/snapshots (Pieter Wuille)
7099e93d0a80c65a547131d7bab977b09573310c refactor: rename `FlushStateMode::ALWAYS` to `FORCE_FLUSH` (Lőrinc)
Pull request description:
Revival of https://github.com/bitcoin/bitcoin/pull/30610#issuecomment-3432564955 with the remaining comments applied on top
> Since #28280, the cost of a non-wiping sync of the UTXO cache is only proportional to the number of dirty entries, rather than proportional to the size of the entire cache. Because of that, there is no reason to perform a wiping flush in case the contents of the cache is still useful.
>
> Split the `FlushStateMode::ALWAYS` mode into a FORCE_SYNC (non-wiping) and a FORCE_FLUSH (wiping), and then use the former in `scantxoutset`, `gettxoutsetinfo`, snapshot creation.
(slightly updated after #30214)
ACKs for top commit:
optout21:
reACK c6ca2b85a3e6e73674e210aee4ed69c4af2848e4
cedwies:
reACK c6ca2b8 (trivial)
achow101:
ACK c6ca2b85a3e6e73674e210aee4ed69c4af2848e4
sedited:
ACK c6ca2b85a3e6e73674e210aee4ed69c4af2848e4
Tree-SHA512: f3525a85dc512db4a0a9c749ad47c0d3fa44085a121aa54cd77646260a719c71f754ec6570ae77779c0ed68a24799116f79c686e7a17ce57a26f6a598f7bf926
4e4fa0199e