[PATCH] kiocbClear should use clear_bit instead of set_bit

Patch from: Suparna Bhattacharya <suparna@in.ibm.com>

Just an obvious fix.
The kiocbClearX macros were doing a set_bit !
They should be calling clear_bit.
Ran into this now that I'm actually using kiocbClearKicked.

include/linux/aio.h

@@ -37,9 +37,9 @@ struct kioctx;
 #define kiocbSetKicked(iocb)	set_bit(KIF_KICKED, &(iocb)->ki_flags)
 #define kiocbSetCancelled(iocb)	set_bit(KIF_CANCELLED, &(iocb)->ki_flags)
 
-#define kiocbClearLocked(iocb)	set_bit(KIF_LOCKED, &(iocb)->ki_flags)
-#define kiocbClearKicked(iocb)	set_bit(KIF_KICKED, &(iocb)->ki_flags)
-#define kiocbClearCancelled(iocb)	set_bit(KIF_CANCELLED, &(iocb)->ki_flags)
+#define kiocbClearLocked(iocb)	clear_bit(KIF_LOCKED, &(iocb)->ki_flags)
+#define kiocbClearKicked(iocb)	clear_bit(KIF_KICKED, &(iocb)->ki_flags)
+#define kiocbClearCancelled(iocb)	clear_bit(KIF_CANCELLED, &(iocb)->ki_flags)
 
 #define kiocbIsLocked(iocb)	test_bit(0, &(iocb)->ki_flags)
 #define kiocbIsKicked(iocb)	test_bit(1, &(iocb)->ki_flags)