config SHARE_FS tristate "SHAREFS filesystem support" help SHAREFS is an overlay file system.SHAREFS is used for file sharing between applications. Sharefs manages permissions through different permissions for reading and writing directories. config SHAREFS_SUPPORT_OVERRIDE bool "Sharefs: support override " depends on SHARE_FS default n help This is the switch of override feature on sharefs file system. If the device type is 2in1, it shoule be set y. config SHAREFS_SUPPORT_WRITE bool "Sharefs: support write operations" depends on SHARE_FS depends on SHAREFS_SUPPORT_OVERRIDE default n help This is the switch of write operation on sharefs file system. If the device type is 2in1 and writing files is needed, it shoule be set y.