Btrfs assert support

configname: CONFIG_BTRFS_ASSERT

Linux Kernel Configuration
└─>File systems
└─>Btrfs assert support
In linux kernel since version 3.12 (release Date: 2013-11-03)  
Enable run-time assertion checking. This will result in panics if
any of the assertions trip. This is meant for btrfs developers only.

If unsure, say N.