The patch titled
Subject: userfaultfd: non-cooperative: selftest: enable REMOVE event test for shmem
has been added to the -mm tree. Its filename is
userfaultfd-non-cooperative-selftest-enable-remove-event-test-for-shmem.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/userfaultfd-non-cooperative-selftest-enable-remove-event-test-for-shmem.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/userfaultfd-non-cooperative-selftest-enable-remove-event-test-for-shmem.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
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------------------------------------------------------
From: Mike Rapoport <rppt@xxxxxxxxxxxxxxxxxx>
Subject: 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@xxxxxxxxxxxxxxxxxx
Signed-off-by: Mike Rapoport <rppt@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Cc: Hillf Danton <hillf.zj@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
tools/testing/selftests/vm/userfaultfd.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff -puN tools/testing/selftests/vm/userfaultfd.c~userfaultfd-non-cooperative-selftest-enable-remove-event-test-for-shmem tools/testing/selftests/vm/userfaultfd.c
--- a/tools/testing/selftests/vm/userfaultfd.c~userfaultfd-non-cooperative-selftest-enable-remove-event-test-for-shmem
+++ a/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 */
_
Patches currently in -mm which might be from rppt@xxxxxxxxxxxxxxxxxx are
userfaultfd-non-cooperative-dup_userfaultfd-use-mm_count-instead-of-mm_users.patch
userfaultfd-introduce-vma_can_userfault.patch
userfaultfd-shmem-add-shmem_mcopy_atomic_pte-for-userfaultfd-support.patch
userfaultfd-shmem-introduce-vma_is_shmem.patch
userfaultfd-shmem-use-shmem_mcopy_atomic_pte-for-shared-memory.patch
userfaultfd-shmem-add-userfaultfd-hook-for-shared-memory-faults.patch
userfaultfd-shmem-allow-registration-of-shared-memory-ranges.patch
userfaultfd-shmem-add-userfaultfd_shmem-test.patch
userfaultfd-non-cooperative-selftest-introduce-userfaultfd_open.patch
userfaultfd-non-cooperative-selftest-add-ufd-parameter-to-copy_page.patch
userfaultfd-non-cooperative-selftest-add-test-for-fork-madvdontneed-and-remap-events.patch
userfaultfd-non-cooperative-rename-event_madvdontneed-to-event_remove.patch
userfaultfd-non-cooperative-add-madvise-event-for-madv_remove-request.patch
userfaultfd-non-cooperative-selftest-enable-remove-event-test-for-shmem.patch
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