[PATCH 3/3] userfaultfd: non-cooperative: selftest: enable REMOVE event test for shmem

[Mike Rapoport <rppt@linux.vnet.ibm.com>]

Now when madvise(MADV_REMOVE) notifies uffd reader, we should verify that
appliciation actually sees zeros at the removed range.

Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
---
 tools/testing/selftests/vm/userfaultfd.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/tools/testing/selftests/vm/userfaultfd.c b/tools/testing/selftests/vm/userfaultfd.c
index 9eb77df..e9449c8 100644
--- a/tools/testing/selftests/vm/userfaultfd.c
+++ b/tools/testing/selftests/vm/userfaultfd.c
@@ -569,9 +569,9 @@ static int userfaultfd_open(int features)
  * part is accessed after mremap. Since hugetlbfs does not support
  * mremap, the entire monitored area is accessed in a single pass for
  * HUGETLB_TEST.
- * The release of the pages currently generates event only for
+ * The release of the pages currently generates event for shmem and
  * anonymous memory (UFFD_EVENT_REMOVE), hence it is not checked
- * for hugetlb and shmem.
+ * for hugetlb.
  */
 static int faulting_process(void)
 {
@@ -610,7 +610,6 @@ static int faulting_process(void)
 		}
 	}
 
-#ifndef SHMEM_TEST
 	if (release_pages(area_dst))
 		return 1;
 
@@ -618,7 +617,6 @@ static int faulting_process(void)
 		if (my_bcmp(area_dst + nr * page_size, zeropage, page_size))
 			fprintf(stderr, "nr %lu is not zero\n", nr), exit(1);
 	}
-#endif /* SHMEM_TEST */
 
 #endif /* HUGETLB_TEST */
 
-- 
1.9.1

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