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lib/bitmap.c: make the bits parameter of bitmap_remap unsigned

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Also, rename bits to nbits. Both changes for consistency with other
bitmap_* functions.

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>
This commit is contained in:
Rasmus Villemoes 2015-02-12 15:02:13 -08:00 committed by Linus Torvalds
parent f6a1f5db8d
commit 9814ec135d
2 changed files with 9 additions and 9 deletions
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2
include/linux/bitmap.h
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@ -160,7 +160,7 @@ extern int bitmap_parselist(const char *buf, unsigned long *maskp,
extern int bitmap_parselist_user(const char __user *ubuf, unsigned int ulen,
unsigned long *dst, int nbits);
extern void bitmap_remap(unsigned long *dst, const unsigned long *src,
const unsigned long *old, const unsigned long *new, int bits);
const unsigned long *old, const unsigned long *new, unsigned int nbits);
extern int bitmap_bitremap(int oldbit,
const unsigned long *old, const unsigned long *new, int bits);
extern void bitmap_onto(unsigned long *dst, const unsigned long *orig,

16
lib/bitmap.c
View File

@ -803,7 +803,7 @@ unsigned int bitmap_ord_to_pos(const unsigned long *buf, unsigned int ord, unsig
* @src: subset to be remapped
* @old: defines domain of map
* @new: defines range of map
* @bits: number of bits in each of these bitmaps
* @nbits: number of bits in each of these bitmaps
*
* Let @old and @new define a mapping of bit positions, such that
* whatever position is held by the n-th set bit in @old is mapped
@ -831,22 +831,22 @@ unsigned int bitmap_ord_to_pos(const unsigned long *buf, unsigned int ord, unsig
*/
void bitmap_remap(unsigned long *dst, const unsigned long *src,
const unsigned long *old, const unsigned long *new,
int bits)
unsigned int nbits)
{
int oldbit, w;
unsigned int oldbit, w;
if (dst == src) /* following doesn't handle inplace remaps */
return;
bitmap_zero(dst, bits);
bitmap_zero(dst, nbits);
w = bitmap_weight(new, bits);
for_each_set_bit(oldbit, src, bits) {
int n = bitmap_pos_to_ord(old, oldbit, bits);
w = bitmap_weight(new, nbits);
for_each_set_bit(oldbit, src, nbits) {
int n = bitmap_pos_to_ord(old, oldbit, nbits);
if (n < 0 || w == 0)
set_bit(oldbit, dst); /* identity map */
else
set_bit(bitmap_ord_to_pos(new, n % w, bits), dst);
set_bit(bitmap_ord_to_pos(new, n % w, nbits), dst);
}
}
EXPORT_SYMBOL(bitmap_remap);