I realize this is related very loosely (if at all) to this topic but what about these two possible features: - a mount option, or - an attribute (which could be set on directories and/or sub-volumes and applied to any new files created below these) which effectively forces every read/write operations to behave like the file was explicitly opened with DirectIO by the application (even if the application has no DirectIO support)? This could achieve something loosely similar to DAX while keeping more of the "advanced" Btrfs features (I think only compression is ruled out by DIO). -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
