JFFS2 summary support

configname: CONFIG_JFFS2_SUMMARY

Linux Kernel Configuration
└─>File systems
└─>Miscellaneous filesystems
└─>JFFS2 summary support
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
This feature makes it possible to use summary information
for faster filesystem mount.

The summary information can be inserted into a filesystem image
by the utility 'sumtool'.

If unsure, say 'N'.