lib/: rename random32() to prandom_u32()

Use preferable function name which implies using a pseudo-random
number generator.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/lib/fault-inject.c b/lib/fault-inject.c
index f7210ad..c5c7a76 100644
--- a/lib/fault-inject.c
+++ b/lib/fault-inject.c
@@ -122,7 +122,7 @@
 			return false;
 	}
 
-	if (attr->probability <= random32() % 100)
+	if (attr->probability <= prandom_u32() % 100)
 		return false;
 
 	if (!fail_stacktrace(attr))
diff --git a/lib/list_sort.c b/lib/list_sort.c
index d7325c6b..1183fa7 100644
--- a/lib/list_sort.c
+++ b/lib/list_sort.c
@@ -229,7 +229,7 @@
 			goto exit;
 		}
 		 /* force some equivalencies */
-		el->value = random32() % (TEST_LIST_LEN/3);
+		el->value = prandom_u32() % (TEST_LIST_LEN / 3);
 		el->serial = i;
 		el->poison1 = TEST_POISON1;
 		el->poison2 = TEST_POISON2;