lib: bitmap: make nbits parameter of bitmap_intersects unsigned
The compiler can generate slightly smaller and simpler code when it
knows that "nbits" is non-negative. Since no-one passes a negative
bit-count, this shouldn't affect the semantics.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/bitmap.h b/include/linux/bitmap.h
index 7048782..2f3f3a4 100644
--- a/include/linux/bitmap.h
+++ b/include/linux/bitmap.h
@@ -107,7 +107,7 @@
extern int __bitmap_andnot(unsigned long *dst, const unsigned long *bitmap1,
const unsigned long *bitmap2, unsigned int nbits);
extern int __bitmap_intersects(const unsigned long *bitmap1,
- const unsigned long *bitmap2, int bits);
+ const unsigned long *bitmap2, unsigned int nbits);
extern int __bitmap_subset(const unsigned long *bitmap1,
const unsigned long *bitmap2, int bits);
extern int __bitmap_weight(const unsigned long *bitmap, int bits);
@@ -240,7 +240,7 @@
}
static inline int bitmap_intersects(const unsigned long *src1,
- const unsigned long *src2, int nbits)
+ const unsigned long *src2, unsigned int nbits)
{
if (small_const_nbits(nbits))
return ((*src1 & *src2) & BITMAP_LAST_WORD_MASK(nbits)) != 0;