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>

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/bitmap.c b/lib/bitmap.c
index 03207373cc5a..e85daa90b237 100644
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -230,9 +230,9 @@ int __bitmap_andnot(unsigned long *dst, const unsigned long *bitmap1,
 EXPORT_SYMBOL(__bitmap_andnot);
 
 int __bitmap_intersects(const unsigned long *bitmap1,
-                                const unsigned long *bitmap2, int bits)
+                        const unsigned long *bitmap2, unsigned int bits)
 {
-        int k, lim = bits/BITS_PER_LONG;
+        unsigned int k, lim = bits/BITS_PER_LONG;
         for (k = 0; k < lim; ++k)
                 if (bitmap1[k] & bitmap2[k])
                         return 1;