[PATCH] mm/khugepaged: make khugepaged_collapse_control static

[Ben Dooks <ben.dooks@codethink.co.uk>]

Make khugepaged_collapse_control as it is not exported.
Fixes the following sparse warning:

mm/khugepaged.c:829:25: warning: symbol 'khugepaged_collapse_control' was not declared. Should it be static?

Fixes: 34d6b470ab9cf ("mm/khugepaged: add struct collapse_control")
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
---
 mm/khugepaged.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/khugepaged.c b/mm/khugepaged.c
index 97d1b2824386..c9bd0df632bd 100644
--- a/mm/khugepaged.c
+++ b/mm/khugepaged.c
@@ -826,7 +826,7 @@ static void khugepaged_alloc_sleep(void)
 	remove_wait_queue(&khugepaged_wait, &wait);
 }
 
-struct collapse_control khugepaged_collapse_control = {
+static struct collapse_control khugepaged_collapse_control = {
 	.is_khugepaged = true,
 };
 
-- 
2.37.2.352.g3c44437643