F2FS IO tracer

configname: CONFIG_F2FS_IO_TRACE

Linux Kernel Configuration
└─>File systems
└─>F2FS IO tracer
In linux kernel since version 4 (release Date: 2015-04-12)  
F2FS IO trace is based on a function trace, which gathers process
information and block IO patterns in the filesystem level.

If unsure, say N.