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Rev 1408 Rev 1964
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 * bitmap_intersects(src1, src2, nbits) 	Do *src1 and *src2 overlap?
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 * bitmap_intersects(src1, src2, nbits) 	Do *src1 and *src2 overlap?
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 * bitmap_subset(src1, src2, nbits)		Is *src1 a subset of *src2?
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 * bitmap_subset(src1, src2, nbits)		Is *src1 a subset of *src2?
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 * bitmap_empty(src, nbits)			Are all bits zero in *src?
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 * bitmap_empty(src, nbits)			Are all bits zero in *src?
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 * bitmap_full(src, nbits)			Are all bits set in *src?
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 * bitmap_full(src, nbits)			Are all bits set in *src?
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 * bitmap_weight(src, nbits)			Hamming Weight: number set bits
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 * bitmap_weight(src, nbits)			Hamming Weight: number set bits
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 * bitmap_set(dst, pos, nbits)			Set specified bit area
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 * bitmap_clear(dst, pos, nbits)		Clear specified bit area
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 * bitmap_find_next_zero_area(buf, len, pos, n, mask)	Find bit free area
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 * bitmap_shift_right(dst, src, n, nbits)	*dst = *src >> n
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 * bitmap_shift_right(dst, src, n, nbits)	*dst = *src >> n
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 * bitmap_shift_left(dst, src, n, nbits)	*dst = *src << n
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 * bitmap_shift_left(dst, src, n, nbits)	*dst = *src << n
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 * bitmap_remap(dst, src, old, new, nbits)	*dst = map(old, new)(src)
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 * bitmap_remap(dst, src, old, new, nbits)	*dst = map(old, new)(src)
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 * bitmap_bitremap(oldbit, old, new, nbits)	newbit = map(old, new)(oldbit)
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 * bitmap_bitremap(oldbit, old, new, nbits)	newbit = map(old, new)(oldbit)
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 * bitmap_onto(dst, orig, relmap, nbits)	*dst = orig relative to relmap
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 * bitmap_onto(dst, orig, relmap, nbits)	*dst = orig relative to relmap
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			const unsigned long *bitmap2, int bits);
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			const unsigned long *bitmap2, int bits);
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extern int __bitmap_subset(const unsigned long *bitmap1,
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extern int __bitmap_subset(const unsigned long *bitmap1,
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			const unsigned long *bitmap2, int bits);
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			const unsigned long *bitmap2, int bits);
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extern int __bitmap_weight(const unsigned long *bitmap, int bits);
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extern int __bitmap_weight(const unsigned long *bitmap, int bits);
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extern void bitmap_set(unsigned long *map, int i, int len);
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extern void bitmap_clear(unsigned long *map, int start, int nr);
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extern unsigned long bitmap_find_next_zero_area(unsigned long *map,
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					 unsigned long size,
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					 unsigned long start,
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					 unsigned int nr,
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					 unsigned long align_mask);
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extern int bitmap_scnprintf(char *buf, unsigned int len,
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extern int bitmap_scnprintf(char *buf, unsigned int len,
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			const unsigned long *src, int nbits);
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			const unsigned long *src, int nbits);
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extern int __bitmap_parse(const char *buf, unsigned int buflen, int is_user,
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extern int __bitmap_parse(const char *buf, unsigned int buflen, int is_user,
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			unsigned long *dst, int nbits);
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			unsigned long *dst, int nbits);