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Commit 65b4ee62 authored by Rasmus Villemoes's avatar Rasmus Villemoes Committed by Linus Torvalds
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lib: bitmap: remove unnecessary mask from bitmap_complement 



Since the extra bits are "don't care", there is no reason to mask the
last word to the used bits when complementing.  This shaves off yet a
few bytes.

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 3d6684f4

include/linux/bitmap.h

+1 −1
Original line number Diff line number Diff line
@@ -225,7 +225,7 @@ static inline void bitmap_complement(unsigned long *dst, const unsigned long *sr 
			unsigned int nbits)

{

	if (small_const_nbits(nbits))

		*dst = ~(*src) & BITMAP_LAST_WORD_MASK(nbits);

		*dst = ~(*src);

	else

		__bitmap_complement(dst, src, nbits);

}

lib/bitmap.c

+1 −1
Original line number Diff line number Diff line
@@ -93,7 +93,7 @@ void __bitmap_complement(unsigned long *dst, const unsigned long *src, unsigned 
		dst[k] = ~src[k];



	if (bits % BITS_PER_LONG)

		dst[k] = ~src[k] & BITMAP_LAST_WORD_MASK(bits);

		dst[k] = ~src[k];

}

EXPORT_SYMBOL(__bitmap_complement);