Btrfs "Reserve Flush Emergency" Feature Heading To Linux 6.2

"BTRFS_RESERVE_FLUSH_EMERGENCY" is on the way for the Linux 6.2 kernel for dealing with some issues that originally turned up within Facebook's data centers where they were seeing routine out-of-space transaction aborts. With BTRFS_RESERVE_FLUSH_EMERGENCY, Btrfs will try harder to avoid aborted transactions when running out of space...