config AUTOFS4_FS tristate "Old Kconfig name for Kernel automounter support" select AUTOFS_FS help This name exists for people to just automatically pick up the new name of the autofs Kconfig option. All it does is select the new option name. It will go away in a release or two as people have transitioned to just plain AUTOFS_FS. config AUTOFS_FS tristate "Kernel automounter support (supports v3, v4 and v5)" default n help The automounter is a tool to automatically mount remote file systems on demand. This implementation is partially kernel-based to reduce overhead in the already-mounted case; this is unlike the BSD automounter (amd), which is a pure user space daemon. To use the automounter you need the user-space tools from ; you also want to answer Y to "NFS file system support", below. To compile this support as a module, choose M here: the module will be called autofs. If you are not a part of a fairly large, distributed network or don't have a laptop which needs to dynamically reconfigure to the local network, you probably do not need an automounter, and can say N here.