[patch 054/146] tools/testing/selftests/vm/userfaultfd.c: use swap() to make code cleaner

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From: chiminghao <chi.minghao@xxxxxxxxxx>
Subject: tools/testing/selftests/vm/userfaultfd.c: use swap() to make code cleaner

Fix the following coccicheck REVIEW:
./tools/testing/selftests/vm/userfaultfd.c:1531:21-22:use swap() to make
code cleaner

Link: https://lkml.kernel.org/r/20211124031632.35317-1-chi.minghao@xxxxxxxxxx
Signed-off-by: chiminghao <chi.minghao@xxxxxxxxxx>
Reported-by: Zeal Robot <zealci@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 tools/testing/selftests/vm/userfaultfd.c |   11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

--- a/tools/testing/selftests/vm/userfaultfd.c~selftests-vm-use-swap-to-make-code-cleaner
+++ a/tools/testing/selftests/vm/userfaultfd.c
@@ -1417,7 +1417,6 @@ static void userfaultfd_pagemap_test(uns
 static int userfaultfd_stress(void)
 {
 	void *area;
-	char *tmp_area;
 	unsigned long nr;
 	struct uffdio_register uffdio_register;
 	struct uffd_stats uffd_stats[nr_cpus];
@@ -1528,13 +1527,9 @@ static int userfaultfd_stress(void)
 					    count_verify[nr], nr);
 
 		/* prepare next bounce */
-		tmp_area = area_src;
-		area_src = area_dst;
-		area_dst = tmp_area;
-
-		tmp_area = area_src_alias;
-		area_src_alias = area_dst_alias;
-		area_dst_alias = tmp_area;
+		swap(area_src, area_dst);
+
+		swap(area_src_alias, area_dst_alias);
 
 		uffd_stats_report(uffd_stats, nr_cpus);
 	}
_



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