Thanks, Randy. I will follow the instructions to modify the patches. On Fri, Oct 9, 2020 at 4:23 AM Randy Dunlap <rdunlap@xxxxxxxxxxxxx> wrote: > > On 10/8/20 12:53 AM, yulei.kernel@xxxxxxxxx wrote: > > diff --git a/mm/Kconfig b/mm/Kconfig > > index e1995da11cea..8a67c8933a42 100644 > > --- a/mm/Kconfig > > +++ b/mm/Kconfig > > @@ -235,6 +235,15 @@ config DMEM > > Allow reservation of memory which could be dedicated usage of dmem. > > It's the basics of dmemfs. > > > > +config DMEM_DEBUG_FS > > + bool "Enable debug information for direct memory" > > + depends on DMEM && DEBUG_FS > > + def_bool n > > Drop the def_bool line. 'n' is the default anyway and the symbol is > already of type bool from 2 lines above. > > > + help > > + This option enables showing various statistics of direct memory > > + in debugfs filesystem. > > + > > +# > > > -- > ~Randy >