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fix int_sqrt64() for very large numbers
[sfrench/cifs-2.6.git]
/
lib
/
int_sqrt.c
diff --git
a/lib/int_sqrt.c
b/lib/int_sqrt.c
index 14436f4ca6bd7f340971a4f85ded981a9c0b25dc..30e0f9770f88cef66f8655c0b377366b7d986db8 100644
(file)
--- a/
lib/int_sqrt.c
+++ b/
lib/int_sqrt.c
@@
-52,7
+52,7
@@
u32 int_sqrt64(u64 x)
if (x <= ULONG_MAX)
return int_sqrt((unsigned long) x);
- m = 1ULL << (
fls64(x
) & ~1ULL);
+ m = 1ULL << (
(fls64(x) - 1
) & ~1ULL);
while (m != 0) {
b = y + m;
y >>= 1;