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Fix off-by-one in generic ffz
author
Jens Axboe
<jens.axboe@oracle.com>
Mon, 2 Jun 2008 07:41:29 +0000
(09:41 +0200)
committer
Jens Axboe
<jens.axboe@oracle.com>
Mon, 2 Jun 2008 07:41:29 +0000
(09:41 +0200)
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
lib/ffz.h
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diff --git
a/lib/ffz.h
b/lib/ffz.h
index 7fc7d4567ef155035527e9bc5c5751feafd5d9d9..4324f5a3c67b378b93bda2201c937164f5d43477 100644
(file)
--- a/
lib/ffz.h
+++ b/
lib/ffz.h
@@
-3,7
+3,7
@@
static inline int __ffs(int word)
{
static inline int __ffs(int word)
{
- int r =
0
;
+ int r =
1
;
if (!(word & 0xffff)) {
word >>= 16;
if (!(word & 0xffff)) {
word >>= 16;
@@
-31,7
+31,7
@@
static inline int __ffs(int word)
static inline int ffz(unsigned int bitmask)
{
static inline int ffz(unsigned int bitmask)
{
- return ffs(~bitmask);
+ return ffs(~bitmask)
- 1
;
}
#endif
}
#endif