Commit 5e068069 authored by Rasmus Villemoes's avatar Rasmus Villemoes Committed by Linus Torvalds
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lib: bitmap: make nbits parameter of bitmap_equal 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: default avatarRasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 8397927c

include/linux/bitmap.h

+1 −1
Original line number Diff line number Diff line
@@ -91,7 +91,7 @@ 
extern int __bitmap_empty(const unsigned long *bitmap, unsigned int nbits);

extern int __bitmap_full(const unsigned long *bitmap, unsigned int nbits);

extern int __bitmap_equal(const unsigned long *bitmap1,

                	const unsigned long *bitmap2, int bits);

			  const unsigned long *bitmap2, unsigned int nbits);

extern void __bitmap_complement(unsigned long *dst, const unsigned long *src,

			int bits);

extern void __bitmap_shift_right(unsigned long *dst,

lib/bitmap.c

+2 −2
Original line number Diff line number Diff line
@@ -71,9 +71,9 @@ int __bitmap_full(const unsigned long *bitmap, unsigned int bits) 
EXPORT_SYMBOL(__bitmap_full);



int __bitmap_equal(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 0;

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