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authorMike Rapoport <rppt@linux.vnet.ibm.com>2017-02-24 14:56:08 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-02-24 17:46:54 -0800
commit64527f5d540ad496718c7bca5e9387cf6cf94e8c (patch)
tree2e11d8dcee33d556ad163b3f6ecd4847ce5e259b
parenta6bf53eba98e0c36f51322cd6aa771c0ffa283f3 (diff)
downloadlinux-64527f5d540ad496718c7bca5e9387cf6cf94e8c.tar.bz2
userfaultfd: non-cooperative: selftest: enable REMOVE event test for shmem
Now when madvise(MADV_REMOVE) notifies uffd reader, we should verify that appliciation actually sees zeros at the removed range. Link: http://lkml.kernel.org/r/1484814154-1557-4-git-send-email-rppt@linux.vnet.ibm.com Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Reviewed-by: Andrea Arcangeli <aarcange@redhat.com> Cc: Hillf Danton <hillf.zj@alibaba-inc.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--tools/testing/selftests/vm/userfaultfd.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/tools/testing/selftests/vm/userfaultfd.c b/tools/testing/selftests/vm/userfaultfd.c
index 9eb77df568f7..e9449c801888 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 */