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: 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 21fb52ffe444666bc7d3c054a55bf56bdab1803b..f42d72d5fe826b7c145c53fec3e2ed468d478d33 100644 (file)
--- a/include/linux/bitmap.h
+++ b/include/linux/bitmap.h
@@ -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);
 }

diff --git a/lib/bitmap.c b/lib/bitmap.c
index 0f2f845702eb0f397f9894d94bf125b8e4f75441..4387e3c092fdfa92911071934525ef7257e4efb9 100644 (file)
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -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);