[PATCH] Fix xfs_lowbit64

[Andi Kleen <ak@xxxxxx>]

ffs(0) returns -1, not 0.

-Andi

--- linux-2.6.0test3/fs/xfs/xfs_bit.c-o 2003-05-27 03:00:41.000000000 +0200
+++ linux-2.6.0test3/fs/xfs/xfs_bit.c   2003-08-22 21:54:53.000000000 +0200
@@ -156,7 +156,7 @@
 {
        int n;
        n = ffs((unsigned)v);
-       if (n == 0) {
+       if (n < 0) {
                n = ffs(v >> 32);
                if (n >= 0)
                        n+=32;