fat: Kill d_invalidate() in vfat_lookup()

[linux-2.6-omap-h63xx.git] / fs / xfs / xfs_bit.h

diff --git a/fs/xfs/xfs_bit.h b/fs/xfs/xfs_bit.h
index 082641a9782c073e832fab360d88d98020f87310..8e0e463dae2d7c0f55268c46683110a01a42405b 100644 (file)
--- a/fs/xfs/xfs_bit.h
+++ b/fs/xfs/xfs_bit.h
@@ -47,13 +47,39 @@ static inline __uint64_t xfs_mask64lo(int n)
 }
 
 /* Get high bit set out of 32-bit argument, -1 if none set */
-extern int xfs_highbit32(__uint32_t v);
+static inline int xfs_highbit32(__uint32_t v)
+{
+       return fls(v) - 1;
+}
+
+/* Get high bit set out of 64-bit argument, -1 if none set */
+static inline int xfs_highbit64(__uint64_t v)
+{
+       return fls64(v) - 1;
+}
+
+/* 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;
+}
 
 /* Get low bit set out of 64-bit argument, -1 if none set */
-extern int xfs_lowbit64(__uint64_t v);
+static inline int xfs_lowbit64(__uint64_t v)
+{
+       __uint32_t      w = (__uint32_t)v;
+       int             n = 0;
 
-/* Get high bit set out of 64-bit argument, -1 if none set */
-extern int xfs_highbit64(__uint64_t);
+       if (w) {        /* lower bits */
+               n = ffs(w);
+       } else {        /* upper bits */
+               w = (__uint32_t)(v >> 32);
+               if (w && (n = ffs(w)))
+               n += 32;
+       }
+       return n - 1;
+}
 
 /* Return whether bitmap is empty (1 == empty) */
 extern int xfs_bitmap_empty(uint *map, uint size);