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Date:   Mon,  4 Mar 2019 09:22:07 +0100
From:   Greg Kroah-Hartman <>
Cc:     Greg Kroah-Hartman <>,,
        Alison Schofield <>,
        "Kirill A. Shutemov" <>,
        Shuah Khan <>, Sasha Levin <>
Subject: [PATCH 4.19 24/78] selftests/vm/gup_benchmark.c: match gup struct to kernel

4.19-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 <>
Acked-by: Kirill A. Shutemov <>
Signed-off-by: Shuah Khan <>
Signed-off-by: Sasha Levin <>
 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 36df55132036f..9601bc24454d9 100644
--- a/tools/testing/selftests/vm/gup_benchmark.c
+++ b/tools/testing/selftests/vm/gup_benchmark.c
@@ -22,6 +22,7 @@ struct gup_benchmark {
 	__u64 size;
 	__u32 nr_pages_per_call;
 	__u32 flags;
+	__u64 expansion[10];	/* For future use */
 int main(int argc, char **argv)

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