mm: Fix some trivial typos in comments

Signed-off-by: Xie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/mm/slub.c b/mm/slub.c
index e3ba1f2..6a2fa98 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -949,7 +949,7 @@
 	kmemleak_free_recursive(x, s->flags);
 
 	/*
-	 * Trouble is that we may no longer disable interupts in the fast path
+	 * Trouble is that we may no longer disable interrupts in the fast path
 	 * So in order to make the debug calls that expect irqs to be
 	 * disabled we need to disable interrupts temporarily.
 	 */