[PATCH] Fix regression added by ppoll/pselect code.

The compat layer timeout handling changes in:

9f72949f

are busted.  This is most easily seen with an X application
that uses sub-second select/poll timeout such as emacs.  You
hit a key and it takes a second or so before the app responds.

The two ROUND_UP() calls upon entry are using {tv,ts}_sec where it
should instead be using {tv_usec,ts_nsec}, which perfectly explains
the observed incorrect behavior.

Another bug shot down with git bisect.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

fs/compat.c

@@ -1743,7 +1743,7 @@ asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
 		if ((u64)tv.tv_sec >= (u64)MAX_INT64_SECONDS)
 			timeout = -1;	/* infinite */
 		else {
-			timeout = ROUND_UP(tv.tv_sec, 1000000/HZ);
+			timeout = ROUND_UP(tv.tv_usec, 1000000/HZ);
 			timeout += tv.tv_sec * HZ;
 		}
 	}
@@ -1884,7 +1884,7 @@ asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds,
 		/* We assume that ts.tv_sec is always lower than
 		   the number of seconds that can be expressed in
 		   an s64. Otherwise the compiler bitches at us */
-		timeout = ROUND_UP(ts.tv_sec, 1000000000/HZ);
+		timeout = ROUND_UP(ts.tv_nsec, 1000000000/HZ);
 		timeout += ts.tv_sec * HZ;
 	}