debugfs: Add a reference to the debugfs API documentation.

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Cc: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index df27132..ba106db 100644 (file)
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -74,6 +74,9 @@ config DEBUG_FS
          debugging files into.  Enable this option to be able to read and
          write to these files.
 
+         For detailed documentation on the debugfs API, see
+         Documentation/DocBook/filesystems.
+
          If unsure, say N.
 
 config HEADERS_CHECK