Fix typos in comments

[Ss]ytem => [Ss]ystem
udpate => update
paramters => parameters
orginal => original

Signed-off-by: Thomas Weber <swirl@gmx.li>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index d03c946..a6326c7 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2579,7 +2579,7 @@
 	struct zone *z;
 	int average_size;
 	/*
-         * ZONE_DMA and ZONE_DMA32 can be very small area in the sytem.
+         * ZONE_DMA and ZONE_DMA32 can be very small area in the system.
 	 * If they are really small and used heavily, the system can fall
 	 * into OOM very easily.
 	 * This function detect ZONE_DMA/DMA32 size and confgigures zone order.