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[XFS] Fix xfs_lowbit64

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xfs_lowbit64 was broken on 32 bit platforms in a recent cleanup of the xfs
bitops. Fix it back up again.

SGI-PV: 974005
SGI-Modid: xfs-linux-melb:xfs-kern:30202a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
This commit is contained in:
David Chinner 2007-12-07 14:08:48 +11:00 committed by Lachlan McIlroy
parent 45ba598e56
commit edd319dc52
1 changed files with 4 additions and 4 deletions
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8
fs/xfs/xfs_bit.h
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@ -61,15 +61,15 @@ static inline int xfs_highbit64(__uint64_t v)
/* Get low bit set out of 32-bit argument, -1 if none set */
static inline int xfs_lowbit32(__uint32_t v)
{
unsigned long t = v;
return (v) ? find_first_bit(&t, 32) : -1;
__uint32_t t = v;
return (t) ? find_first_bit((unsigned long *)&t, 32) : -1;
}
/* Get low bit set out of 64-bit argument, -1 if none set */
static inline int xfs_lowbit64(__uint64_t v)
{
unsigned long t = v;
return (v) ? find_first_bit(&t, 64) : -1;
__uint64_t t = v;
return (t) ? find_first_bit((unsigned long *)&t, 64) : -1;
}
/* Return whether bitmap is empty (1 == empty) */