The patch titled
Subject: userfaultfd: non-cooperative: selftest: add ufd parameter to copy_page
has been added to the -mm tree. Its filename is
userfaultfd-non-cooperative-selftest-add-ufd-parameter-to-copy_page.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/userfaultfd-non-cooperative-selftest-add-ufd-parameter-to-copy_page.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/userfaultfd-non-cooperative-selftest-add-ufd-parameter-to-copy_page.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
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------------------------------------------------------
From: Mike Rapoport <rppt@xxxxxxxxxxxxxxxxxx>
Subject: userfaultfd: non-cooperative: selftest: add ufd parameter to copy_page
With future addition of event tests, copy_page will be called with
different userfault file descriptors
Link: http://lkml.kernel.org/r/20161216144821.5183-40-aarcange@xxxxxxxxxx
Signed-off-by: Mike Rapoport <rppt@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Cc: "Dr. David Alan Gilbert" <dgilbert@xxxxxxxxxx>
Cc: Hillf Danton <hillf.zj@xxxxxxxxxxxxxxx>
Cc: Michael Rapoport <RAPOPORT@xxxxxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Cc: Pavel Emelyanov <xemul@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
tools/testing/selftests/vm/userfaultfd.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff -puN tools/testing/selftests/vm/userfaultfd.c~userfaultfd-non-cooperative-selftest-add-ufd-parameter-to-copy_page tools/testing/selftests/vm/userfaultfd.c
--- a/tools/testing/selftests/vm/userfaultfd.c~userfaultfd-non-cooperative-selftest-add-ufd-parameter-to-copy_page
+++ a/tools/testing/selftests/vm/userfaultfd.c
@@ -317,7 +317,7 @@ static void *locking_thread(void *arg)
return NULL;
}
-static int copy_page(unsigned long offset)
+static int copy_page(int ufd, unsigned long offset)
{
struct uffdio_copy uffdio_copy;
@@ -329,7 +329,7 @@ static int copy_page(unsigned long offse
uffdio_copy.len = page_size;
uffdio_copy.mode = 0;
uffdio_copy.copy = 0;
- if (ioctl(uffd, UFFDIO_COPY, &uffdio_copy)) {
+ if (ioctl(ufd, UFFDIO_COPY, &uffdio_copy)) {
/* real retval in ufdio_copy.copy */
if (uffdio_copy.copy != -EEXIST)
fprintf(stderr, "UFFDIO_COPY error %Ld\n",
@@ -386,7 +386,7 @@ static void *uffd_poll_thread(void *arg)
offset = (char *)(unsigned long)msg.arg.pagefault.address -
area_dst;
offset &= ~(page_size-1);
- if (copy_page(offset))
+ if (copy_page(uffd, offset))
userfaults++;
}
return (void *)userfaults;
@@ -424,7 +424,7 @@ static void *uffd_read_thread(void *arg)
offset = (char *)(unsigned long)msg.arg.pagefault.address -
area_dst;
offset &= ~(page_size-1);
- if (copy_page(offset))
+ if (copy_page(uffd, offset))
(*this_cpu_userfaults)++;
}
return (void *)NULL;
@@ -438,7 +438,7 @@ static void *background_thread(void *arg
for (page_nr = cpu * nr_pages_per_cpu;
page_nr < (cpu+1) * nr_pages_per_cpu;
page_nr++)
- copy_page(page_nr * page_size);
+ copy_page(uffd, page_nr * page_size);
return NULL;
}
_
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
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