Re: [PATCH] mm: mark mm_pgtables_bytes() argument as const

From: Kirill A. Shutemov
Date: Wed Oct 18 2017 - 04:40:32 EST


On Wed, Oct 18, 2017 at 10:31:17AM +0200, Arnd Bergmann wrote:
> The newly introduced mm_pgtables_bytes() function has two
> definitions with slightly different prototypes. The one
> used for CONFIG_MMU=n causes a compile-time warning:
>
> In file included from include/linux/kernel.h:13:0,
> from mm/debug.c:8:
> mm/debug.c: In function 'dump_mm':
> mm/debug.c:137:21: error: passing argument 1 of 'mm_pgtables_bytes' discards 'const' qualifier from pointer target type [-Werror=discarded-qualifiers]
>
> This changes it to be the same as the other one and avoid the
> warning.
>
> Fixes: 7444e6ee9cce ("mm: consolidate page table accounting")
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>

The fix is already in mmots:

http://ozlabs.org/~akpm/mmots/broken-out/mm-consolidate-page-table-accounting-fix.patch

--
Kirill A. Shutemov