+ userfaultfd-selftest-vm-allow-to-build-in-vm-directory.patch added to -mm tree

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The patch titled
     Subject: userfaultfd: selftest: vm: allow to build in vm/ directory
has been added to the -mm tree.  Its filename is
     userfaultfd-selftest-vm-allow-to-build-in-vm-directory.patch

This patch should soon appear at
    http://ozlabs.org/~akpm/mmots/broken-out/userfaultfd-selftest-vm-allow-to-build-in-vm-directory.patch
and later at
    http://ozlabs.org/~akpm/mmotm/broken-out/userfaultfd-selftest-vm-allow-to-build-in-vm-directory.patch

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------------------------------------------------------
From: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Subject: userfaultfd: selftest: vm: allow to build in vm/ directory

linux/tools/testing/selftests/vm $ make
gcc -Wall -I ../../../../usr/include     compaction_test.c -lrt -o /compaction_test
/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.4/../../../../x86_64-pc-linux-gnu/bin/ld:
cannot open output file /compaction_test: Permission denied
collect2: error: ld returned 1 exit status
make: *** [../lib.mk:54: /compaction_test] Error 1

Since commit a8ba798bc8ec ("selftests: enable O and KBUILD_OUTPUT")
selftests/vm build fails if run from the "selftests/vm" directory, but it
works in the selftests/ directory.  It's quicker to be able to do a local
vm-only build after a tree wipe and this patch allows for it again.

Link: http://lkml.kernel.org/r/20170302173738.18994-4-aarcange@xxxxxxxxxx
Signed-off-by: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Cc: Mike Rapoport <rppt@xxxxxxxxxxxxxxxxxx>
Cc: "Dr. David Alan Gilbert" <dgilbert@xxxxxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Cc: Pavel Emelyanov <xemul@xxxxxxxxxxxxx>
Cc: Hillf Danton <hillf.zj@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 tools/testing/selftests/vm/Makefile |    4 ++++
 1 file changed, 4 insertions(+)

diff -puN tools/testing/selftests/vm/Makefile~userfaultfd-selftest-vm-allow-to-build-in-vm-directory tools/testing/selftests/vm/Makefile
--- a/tools/testing/selftests/vm/Makefile~userfaultfd-selftest-vm-allow-to-build-in-vm-directory
+++ a/tools/testing/selftests/vm/Makefile
@@ -1,5 +1,9 @@
 # Makefile for vm selftests
 
+ifndef OUTPUT
+  OUTPUT := $(shell pwd)
+endif
+
 CFLAGS = -Wall -I ../../../../usr/include $(EXTRA_CFLAGS)
 LDLIBS = -lrt
 TEST_GEN_FILES = compaction_test
_

Patches currently in -mm which might be from aarcange@xxxxxxxxxx are

userfaultfd-shmem-__do_fault-requires-vm_fault_nopage.patch
userfaultfd-non-cooperative-rollback-userfaultfd_exit.patch
userfaultfd-non-cooperative-robustness-check.patch
userfaultfd-non-cooperative-release-all-ctx-in-dup_userfaultfd_complete.patch
userfaultfd-non-cooperative-userfaultfd_remove-revalidate-vma-in-madv_dontneed.patch
userfaultfd-selftest-vm-allow-to-build-in-vm-directory.patch

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