default or selected kernelversion does not have config value CONFIG_LOGFS.
Result is shown for kernelversion 6.5.1

LogFS file system

modulename: logfs.ko

configname: CONFIG_LOGFS

Linux Kernel Configuration
└─>File systems
└─>Miscellaneous filesystems
└─>LogFS file system
In linux kernel since version 2.6.34 (release Date: 2010-05-16)  
Flash filesystem aimed to scale efficiently to large devices.
In comparison to JFFS2 it offers significantly faster mount
times and potentially less RAM usage, although the latter has
not been measured yet.

In its current state it is still very experimental and should
not be used for other than testing purposes.

If unsure, say N.

source code: