linux-kernel - [PATCH] selftests/vm/gup_benchmark.c: match gup struct to kernel

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Date:   Fri, 7 Dec 2018 18:06:45 -0800
From:   Alison Schofield <alison.schofield@...el.com>
To:     shuah@...nel.org, linux-kselftest@...r.kernel.org
Cc:     keith.busch@...el.com, Kirill Shutemov <kirill.shutemov@...el.com>,
        Dave Hansen <dave.hansen@...el.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] selftests/vm/gup_benchmark.c: match gup struct to kernel

An expansion field was added to the kernel copy of this structure for
future use. See mm/gup_benchmark.c.

Add the same expansion field here, so that the IOCTL command decodes
correctly. Otherwise, it fails with EINVAL.

Signed-off-by: Alison Schofield <alison.schofield@...el.com>
---
 tools/testing/selftests/vm/gup_benchmark.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/vm/gup_benchmark.c b/tools/testing/selftests/vm/gup_benchmark.c
index 880b96fc80d4..c0534e298b51 100644
--- a/tools/testing/selftests/vm/gup_benchmark.c
+++ b/tools/testing/selftests/vm/gup_benchmark.c
@@ -25,6 +25,7 @@ struct gup_benchmark {
 	__u64 size;
 	__u32 nr_pages_per_call;
 	__u32 flags;
+	__u64 expansion[10];	/* For future use */
 };
 
 int main(int argc, char **argv)
-- 
2.14.1