[LTP] [PATCH 1/2] hugemmap32: release mem caches and prepare for hugepage

[Li Wang]

As Martin pointed that mem caches count as available, we'd better
release them for huge page use.

Signed-off-by: Li Wang <liwang@redhat.com>
---
 testcases/kernel/mem/hugetlb/hugemmap/hugemmap32.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/testcases/kernel/mem/hugetlb/hugemmap/hugemmap32.c b/testcases/kernel/mem/hugetlb/hugemmap/hugemmap32.c
index 36a426a09..76b790a95 100644
--- a/testcases/kernel/mem/hugetlb/hugemmap/hugemmap32.c
+++ b/testcases/kernel/mem/hugetlb/hugemmap/hugemmap32.c
@@ -64,6 +64,7 @@ static void setup(void)
 
 	SAFE_CLOSEDIR(dir);
 
+	SAFE_FILE_PRINTF("/proc/sys/vm/drop_caches", "3");
 	if (tst_available_mem() < (long long)hpage_size) {
 		g_hpage_path[0] = '\0';
 		tst_brk(TCONF, "No enough memory for gigantic hugepage reservation");
-- 
2.40.1