On Fri, Oct 03, 2014 at 07:07:57PM +0200, Andrea Arcangeli wrote:
> We run out of 32bits in vm_flags, noop change for 64bit archs.
>
> Signed-off-by: Andrea Arcangeli <aarcange@xxxxxxxxxx>
> ---
> fs/proc/task_mmu.c | 4 ++--
> include/linux/huge_mm.h | 4 ++--
> include/linux/ksm.h | 4 ++--
> include/linux/mm_types.h | 2 +-
> mm/huge_memory.c | 2 +-
> mm/ksm.c | 2 +-
> mm/madvise.c | 2 +-
> mm/mremap.c | 2 +-
> 8 files changed, 11 insertions(+), 11 deletions(-)
>
> diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
> index c341568..ee1c3a2 100644
> --- a/fs/proc/task_mmu.c
> +++ b/fs/proc/task_mmu.c
> @@ -532,11 +532,11 @@ static void show_smap_vma_flags(struct seq_file *m, struct vm_area_struct *vma)
> /*
> * Don't forget to update Documentation/ on changes.
> */
> - static const char mnemonics[BITS_PER_LONG][2] = {
> + static const char mnemonics[BITS_PER_LONG+1][2] = {
I believe here and below should be BITS_PER_LONG_LONG instead: it will
catch unknown vmflags. And +1 is not needed un 64-bit systems.
> /*
> * In case if we meet a flag we don't know about.
> */
> - [0 ... (BITS_PER_LONG-1)] = "??",
> + [0 ... (BITS_PER_LONG)] = "??",
>
> [ilog2(VM_READ)] = "rd",
> [ilog2(VM_WRITE)] = "wr",
--
Kirill A. Shutemov
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