Hi Cyrill,

On Wed, 24 Oct 2012 12:45:15 +0400 Cyrill Gorcunov <gorcu...@openvz.org> wrote:
>
>  static void show_smap_vma_flags(struct seq_file *m, struct vm_area_struct 
> *vma)
>  {
> +#define __VM_FLAG(_f, _s)    [ilog2(_f)] = {(const char [2]){_s}}

I really don't think you need the cast (and it may hide bad usages) or
the second set of braces.  Thus:

#define __VM_FLAG(_f, _s)       [ilog2(_f)] = {_s}

> +
>       /*
>        * Don't forget to update Documentation/ on changes.
>        */
> @@ -491,46 +493,49 @@ static void show_smap_vma_flags(struct s
>               /*
>                * In case if we meet a flag we don't know about.
>                */
> -             [0 ... (BITS_PER_LONG-1)] = { {'?', '?'} },
> +             [0 ... (BITS_PER_LONG-1)] = { (const char [2]){"??"} },

And here.

Further is there any reason for the struct?

#define __VM_FLAG(_f, _s)       [ilog2(_f)] = _s

static const char mnemonics[BITS_PER_LONG][2] = {
...
};

>       seq_puts(m, "VmFlags: ");
>       for (i = 0; i < BITS_PER_LONG; i++) {
> -             if (vma->vm_flags & (1 << i))
> +             if (vma->vm_flags & (1ul << i)) {
>                       seq_printf(m, "%c%c ",
>                                  mnemonics[i].l[0],
>                                  mnemonics[i].l[1]);

                                   mnemonics[i][0], mnemonics[i][1]

/me looks for another bike shed :-)
-- 
Cheers,
Stephen Rothwell                    s...@canb.auug.org.au

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