linux-kernel - [PATCH 4.20 24/88] selftests/vm/gup_benchmark.c: match gup struct to kernel

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Date:   Mon,  4 Mar 2019 09:22:07 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Alison Schofield <alison.schofield@...el.com>,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        Shuah Khan <shuah@...nel.org>, Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.20 24/88] selftests/vm/gup_benchmark.c: match gup struct to kernel

4.20-stable review patch.  If anyone has any objections, please let me know.

------------------

[ Upstream commit 91cd63d320f84dcbf21d4327f31f7e1f85adebd0 ]

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>
Acked-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
Signed-off-by: Shuah Khan <shuah@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 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 880b96fc80d4c..c0534e298b512 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)
-- 
2.19.1