When swap is a symlink, the swap entry in
/etc/fstab may not match /proc/swaps. That
means strcmp shouldn't be used for swapon.

--- util-linux-2.12p/mount/swapon.c.sopwith	Wed Dec 22 04:50:19 2004
+++ util-linux-2.12p/mount/swapon.c	Thu Dec 23 14:44:49 2004
@@ -138,9 +138,19 @@
 is_in_proc_swaps(const char *fname) {
 	int i;
 
-	for (i = 0; i < numSwaps; i++)
-		if (swapFiles[i] && !strcmp(fname, swapFiles[i]))
+	for (i = 0; i < numSwaps; i++) {
+	        struct stat swapped, swapping;
+
+		if (!swapFiles[i]) continue;
+
+		if (!strcmp(fname, swapFiles[i])
+ 		    || (!stat (swapFiles[i], &swapped)
+ 			&& !stat (fname, &swapping)
+ 			&& (swapped.st_dev == swapping.st_dev
+ 			    && swapped.st_ino == swapping.st_ino))
+		    )
 			return 1;
+	}
 	return 0;
 }