linux-kernel - [PATCH v3] selftests/damon: suppress compiler warnings for huge_count_read

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Date:   Wed,  4 May 2022 18:29:08 +0000
From:   Yuanchu Xie <yuanchu@...gle.com>
To:     Shuah Khan <shuah@...nel.org>, Markus Boehme <markubo@...zon.de>,
        SeongJae Park <sj@...nel.org>
Cc:     rientjes@...gle.com, Andrew Morton <akpm@...ux-foundation.org>,
        linux-mm@...ck.org, linux-kselftest@...r.kernel.org,
        linux-kernel@...r.kernel.org, Yuanchu Xie <yuanchu@...gle.com>
Subject: [PATCH v3] selftests/damon: suppress compiler warnings for huge_count_read_write

The test case added in commit db7a347b26fe ("mm/damon/dbgfs:
use '__GFP_NOWARN' for user-specified size buffer allocation")
intentionally writes and reads with a large count to cause
allocation failure and check for kernel warnings. We suppress
the compiler warnings for these calls as they work as intended.

Signed-off-by: Yuanchu Xie <yuanchu@...gle.com>
---
 tools/testing/selftests/damon/huge_count_read_write.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/testing/selftests/damon/huge_count_read_write.c b/tools/testing/selftests/damon/huge_count_read_write.c
index ad7a6b4cf338..91bd80c75cd9 100644
--- a/tools/testing/selftests/damon/huge_count_read_write.c
+++ b/tools/testing/selftests/damon/huge_count_read_write.c
@@ -2,6 +2,8 @@
 /*
  * Author: SeongJae Park <sj@...nel.org>
  */
+#pragma GCC diagnostic ignored "-Wstringop-overflow"
+#pragma GCC diagnostic ignored "-Wstringop-overread"
 
 #include <fcntl.h>
 #include <stdlib.h>
-- 
2.36.0.464.gb9c8b46e94-goog