[PATCH] fix compilation for !CONFIG_SWAP

We must always use total_swapcache_pages instead of
swapper_space.nrpages in code that doesn't depend on CONFIG_SWAP

fs/proc/proc_misc.c

@@ -180,8 +180,8 @@ static int meminfo_read_proc(char *page, char **start, off_t off,
 		K(i.freeram),
 		K(i.sharedram),
 		K(i.bufferram),
-		K(ps.nr_pagecache-swapper_space.nrpages-i.bufferram),
-		K(swapper_space.nrpages),
+		K(ps.nr_pagecache-total_swapcache_pages-i.bufferram),
+		K(total_swapcache_pages),
 		K(active),
 		K(inactive),
 		K(i.totalhigh),