
This should significantly improve performance when used to write large amounts of messages. This feature is enabled through the fsync configuration option. Code refactorize around fsync. This addresses #390 (although it doesn't necessarily fix all instances of that problem yet). Github-ref: https://github.com/OfflineIMAP/offlineimap/issues/390 Originally-written-by: Giel van Schijndel <me@mortis.eu> Signed-off-by: Nicolas Sebrecht <nicolas.s-dev@laposte.net>