Re: [PATCH] bitmap: speedup in bitmap_find_free_region when orderis 0

[Joe Perches]

On Mon, 2013-04-08 at 14:30 -0700, Andrew Morton wrote:
> On Mon,  8 Apr 2013 11:23:48 +0900 Chanho Min <chanho.min@xxxxxxx> wrote:
> > --- a/lib/bitmap.c
[]
> > +static int __bitmap_find_free_one(unsigned long *bitmap, int bits)
[]
> > +	unsigned long mask = (unsigned long)(~((unsigned long) 0));
> 
> That seems unnecessarily complicated.  "unsigned long mask = -1;" works :)

So would ULONG_MAX or just ~0UL


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