diff --git a/include/asm-generic/bitsperlong.h b/include/asm-generic/bitsperlong.h
index 3905c1c93dc2..0eeb77544f1d 100644
--- a/include/asm-generic/bitsperlong.h
+++ b/include/asm-generic/bitsperlong.h
@@ -23,4 +23,6 @@
 #define BITS_PER_LONG_LONG 64
 #endif
 
+#define SMALL_CONST(n) (__builtin_constant_p(n) && (unsigned long)(n) < BITS_PER_LONG)
+
 #endif /* __ASM_GENERIC_BITS_PER_LONG */
diff --git a/include/linux/bitmap.h b/include/linux/bitmap.h
index adf7bd9f0467..e89f1dace846 100644
--- a/include/linux/bitmap.h
+++ b/include/linux/bitmap.h
@@ -224,9 +224,6 @@ extern int bitmap_print_to_pagebuf(bool list, char *buf,
  * so make such users (should any ever turn up) call the out-of-line
  * versions.
  */
-#define small_const_nbits(nbits) \
-	(__builtin_constant_p(nbits) && (nbits) <= BITS_PER_LONG && (nbits) > 0)
-
 static inline void bitmap_zero(unsigned long *dst, unsigned int nbits)
 {
 	unsigned int len = BITS_TO_LONGS(nbits) * sizeof(unsigned long);
@@ -278,7 +275,7 @@ extern void bitmap_to_arr32(u32 *buf, const unsigned long *bitmap,
 static inline int bitmap_and(unsigned long *dst, const unsigned long *src1,
 			const unsigned long *src2, unsigned int nbits)
 {
-	if (small_const_nbits(nbits))
+	if (SMALL_CONST(nbits - 1))
 		return (*dst = *src1 & *src2 & BITS_FIRST(nbits - 1)) != 0;
 	return __bitmap_and(dst, src1, src2, nbits);
 }
@@ -286,7 +283,7 @@ static inline int bitmap_and(unsigned long *dst, const unsigned long *src1,
 static inline void bitmap_or(unsigned long *dst, const unsigned long *src1,
 			const unsigned long *src2, unsigned int nbits)
 {
-	if (small_const_nbits(nbits))
+	if (SMALL_CONST(nbits - 1))
 		*dst = *src1 | *src2;
 	else
 		__bitmap_or(dst, src1, src2, nbits);
@@ -295,7 +292,7 @@ static inline void bitmap_or(unsigned long *dst, const unsigned long *src1,
 static inline void bitmap_xor(unsigned long *dst, const unsigned long *src1,
 			const unsigned long *src2, unsigned int nbits)
 {
-	if (small_const_nbits(nbits))
+	if (SMALL_CONST(nbits - 1))
 		*dst = *src1 ^ *src2;
 	else
 		__bitmap_xor(dst, src1, src2, nbits);
@@ -304,7 +301,7 @@ static inline void bitmap_xor(unsigned long *dst, const unsigned long *src1,
 static inline int bitmap_andnot(unsigned long *dst, const unsigned long *src1,
 			const unsigned long *src2, unsigned int nbits)
 {
-	if (small_const_nbits(nbits))
+	if (SMALL_CONST(nbits - 1))
 		return (*dst = *src1 & ~(*src2) & BITS_FIRST(nbits - 1)) != 0;
 	return __bitmap_andnot(dst, src1, src2, nbits);
 }
@@ -312,7 +309,7 @@ static inline int bitmap_andnot(unsigned long *dst, const unsigned long *src1,
 static inline void bitmap_complement(unsigned long *dst, const unsigned long *src,
 			unsigned int nbits)
 {
-	if (small_const_nbits(nbits))
+	if (SMALL_CONST(nbits - 1))
 		*dst = ~(*src);
 	else
 		__bitmap_complement(dst, src, nbits);
@@ -328,7 +325,7 @@ static inline void bitmap_complement(unsigned long *dst, const unsigned long *sr
 static inline int bitmap_equal(const unsigned long *src1,
 			const unsigned long *src2, unsigned int nbits)
 {
-	if (small_const_nbits(nbits))
+	if (SMALL_CONST(nbits - 1))
 		return !((*src1 ^ *src2) & BITS_FIRST(nbits - 1));
 	if (__builtin_constant_p(nbits & BITMAP_MEM_MASK) &&
 	    IS_ALIGNED(nbits, BITMAP_MEM_ALIGNMENT))
@@ -350,7 +347,7 @@ static inline bool bitmap_or_equal(const unsigned long *src1,
 				   const unsigned long *src3,
 				   unsigned int nbits)
 {
-	if (!small_const_nbits(nbits))
+	if (!SMALL_CONST(nbits - 1))
 		return __bitmap_or_equal(src1, src2, src3, nbits);
 
 	return !(((*src1 | *src2) ^ *src3) & BITS_FIRST(nbits - 1));
@@ -359,7 +356,7 @@ static inline bool bitmap_or_equal(const unsigned long *src1,
 static inline int bitmap_intersects(const unsigned long *src1,
 			const unsigned long *src2, unsigned int nbits)
 {
-	if (small_const_nbits(nbits))
+	if (SMALL_CONST(nbits - 1))
 		return ((*src1 & *src2) & BITS_FIRST(nbits - 1)) != 0;
 	else
 		return __bitmap_intersects(src1, src2, nbits);
@@ -368,7 +365,7 @@ static inline int bitmap_intersects(const unsigned long *src1,
 static inline int bitmap_subset(const unsigned long *src1,
 			const unsigned long *src2, unsigned int nbits)
 {
-	if (small_const_nbits(nbits))
+	if (SMALL_CONST(nbits - 1))
 		return !((*src1 & ~(*src2)) & BITS_FIRST(nbits - 1));
 	else
 		return __bitmap_subset(src1, src2, nbits);
@@ -376,7 +373,7 @@ static inline int bitmap_subset(const unsigned long *src1,
 
 static inline bool bitmap_empty(const unsigned long *src, unsigned nbits)
 {
-	if (small_const_nbits(nbits))
+	if (SMALL_CONST(nbits - 1))
 		return !(*src & BITS_FIRST(nbits - 1));
 
 	return find_first_bit(src, nbits) == nbits;
@@ -384,7 +381,7 @@ static inline bool bitmap_empty(const unsigned long *src, unsigned nbits)
 
 static inline bool bitmap_full(const unsigned long *src, unsigned int nbits)
 {
-	if (small_const_nbits(nbits))
+	if (SMALL_CONST(nbits - 1))
 		return !(~(*src) & BITS_FIRST(nbits - 1));
 
 	return find_first_zero_bit(src, nbits) == nbits;
@@ -392,7 +389,7 @@ static inline bool bitmap_full(const unsigned long *src, unsigned int nbits)
 
 static __always_inline int bitmap_weight(const unsigned long *src, unsigned int nbits)
 {
-	if (small_const_nbits(nbits))
+	if (SMALL_CONST(nbits - 1))
 		return hweight_long(*src & BITS_FIRST(nbits - 1));
 	return __bitmap_weight(src, nbits);
 }
@@ -428,7 +425,7 @@ static __always_inline void bitmap_clear(unsigned long *map, unsigned int start,
 static inline void bitmap_shift_right(unsigned long *dst, const unsigned long *src,
 				unsigned int shift, unsigned int nbits)
 {
-	if (small_const_nbits(nbits))
+	if (SMALL_CONST(nbits - 1))
 		*dst = (*src & BITS_FIRST(nbits - 1)) >> shift;
 	else
 		__bitmap_shift_right(dst, src, shift, nbits);
@@ -437,7 +434,7 @@ static inline void bitmap_shift_right(unsigned long *dst, const unsigned long *s
 static inline void bitmap_shift_left(unsigned long *dst, const unsigned long *src,
 				unsigned int shift, unsigned int nbits)
 {
-	if (small_const_nbits(nbits))
+	if (SMALL_CONST(nbits - 1))
 		*dst = (*src << shift) & BITS_FIRST(nbits - 1);
 	else
 		__bitmap_shift_left(dst, src, shift, nbits);
@@ -449,7 +446,7 @@ static inline void bitmap_replace(unsigned long *dst,
 				  const unsigned long *mask,
 				  unsigned int nbits)
 {
-	if (small_const_nbits(nbits))
+	if (SMALL_CONST(nbits - 1))
 		*dst = (*old & ~(*mask)) | (*new & *mask);
 	else
 		__bitmap_replace(dst, old, new, mask, nbits);
