diff options
Diffstat (limited to 'fs/xfs/xfs_bit.h')
-rw-r--r-- | fs/xfs/xfs_bit.h | 27 |
1 files changed, 5 insertions, 22 deletions
diff --git a/fs/xfs/xfs_bit.h b/fs/xfs/xfs_bit.h index 325a007dec91..082641a9782c 100644 --- a/fs/xfs/xfs_bit.h +++ b/fs/xfs/xfs_bit.h | |||
@@ -47,30 +47,13 @@ static inline __uint64_t xfs_mask64lo(int n) | |||
47 | } | 47 | } |
48 | 48 | ||
49 | /* Get high bit set out of 32-bit argument, -1 if none set */ | 49 | /* Get high bit set out of 32-bit argument, -1 if none set */ |
50 | static inline int xfs_highbit32(__uint32_t v) | 50 | extern int xfs_highbit32(__uint32_t v); |
51 | { | ||
52 | return fls(v) - 1; | ||
53 | } | ||
54 | |||
55 | /* Get high bit set out of 64-bit argument, -1 if none set */ | ||
56 | static inline int xfs_highbit64(__uint64_t v) | ||
57 | { | ||
58 | return fls64(v) - 1; | ||
59 | } | ||
60 | |||
61 | /* Get low bit set out of 32-bit argument, -1 if none set */ | ||
62 | static inline int xfs_lowbit32(__uint32_t v) | ||
63 | { | ||
64 | __uint32_t t = v; | ||
65 | return (t) ? find_first_bit((unsigned long *)&t, 32) : -1; | ||
66 | } | ||
67 | 51 | ||
68 | /* Get low bit set out of 64-bit argument, -1 if none set */ | 52 | /* Get low bit set out of 64-bit argument, -1 if none set */ |
69 | static inline int xfs_lowbit64(__uint64_t v) | 53 | extern int xfs_lowbit64(__uint64_t v); |
70 | { | 54 | |
71 | __uint64_t t = v; | 55 | /* Get high bit set out of 64-bit argument, -1 if none set */ |
72 | return (t) ? find_first_bit((unsigned long *)&t, 64) : -1; | 56 | extern int xfs_highbit64(__uint64_t); |
73 | } | ||
74 | 57 | ||
75 | /* Return whether bitmap is empty (1 == empty) */ | 58 | /* Return whether bitmap is empty (1 == empty) */ |
76 | extern int xfs_bitmap_empty(uint *map, uint size); | 59 | extern int xfs_bitmap_empty(uint *map, uint size); |