4 static inline int __ffs(unsigned long word)  in __ffs()  argument
9 	if ((word & 0xffffffff) == 0) {  in __ffs()
11 		word >>= 32;  in __ffs()
14 	if (!(word & 0xffff)) {  in __ffs()
15 		word >>= 16;  in __ffs()
18 	if (!(word & 0xff)) {  in __ffs()
19 		word >>= 8;  in __ffs()
22 	if (!(word & 0xf)) {  in __ffs()
23 		word >>= 4;  in __ffs()
26 	if (!(word & 3)) {  in __ffs()
27 		word >>= 2;  in __ffs()
30 	if (!(word & 1)) {  in __ffs()
31 		word >>= 1;  in __ffs()