Re: [PATCH] m32r: mm: fix build warning

[Andrew Morton]

On Tue, 14 Feb 2017 22:05:45 +0000 Sudip Mukherjee <sudipm.mukherjee@xxxxxxxxx> wrote:

> The build of m32r was giving warning:
> mm/pgtable-generic.c: In function 'ptep_clear_flush':
> mm/pgtable-generic.c:76:20: warning:
> 	unused variable 'mm' [-Wunused-variable]
> 
> The implementation of ptep_get_and_clear() and pte_accessible()
> does not use 'mm'.

That's because ptep_get_and_clear() and pte_accessible() are
implemented as macros.  If they were (static inline) C functions then
this warning wouldn't occur.  All the other architectures get this
right.