Setting AUTOFS_FS and AUTOFS4_FS to y or m results in a compile failure. It isn't possible to unset one if the other is set because it introduces a circular dependency. But adding "depends on AUTOFS_FS = n && AUTOFS_FS != m" will make autofs4 appear under the autofs entry which should call attention to it. It also results in AUTOFS4_FS being removed from .config for any setting of AUTOFS_FS except n. Adding a "NOTE" to the AUTOFS4_FS help text will hopefully raise awareness of the change to smooth the transition. Signed-off-by: Ian Kent <raven@xxxxxxxxxx> Cc: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> --- fs/autofs4/Kconfig | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/fs/autofs4/Kconfig b/fs/autofs4/Kconfig index 53bc592a250d..2c2fdf989f90 100644 --- a/fs/autofs4/Kconfig +++ b/fs/autofs4/Kconfig @@ -1,6 +1,7 @@ config AUTOFS4_FS tristate "Kernel automounter version 4 support (also supports v3 and v5)" default n + depends on AUTOFS_FS = n help The automounter is a tool to automatically mount remote file systems on demand. This implementation is partially kernel-based to reduce @@ -30,3 +31,10 @@ config AUTOFS4_FS - any "alias autofs autofs4" will need to be removed. Please configure AUTOFS_FS instead of AUTOFS4_FS from now on. + + NOTE: Since the modules autofs and autofs4 use the same file system + type name of "autofs" only one can be built. The "depends" + above will result in AUTOFS4_FS not appearing in .config for + any setting of AUTOFS_FS other than n and AUTOFS4_FS will + appear under the AUTOFS_FS entry otherwise which is intended + to draw attention to the module rename change.