Patch "userfaultfd: selftest: vm: allow to build in vm/ directory" has been added to the 4.4-stable tree

This is a note to let you know that I've just added the patch titled

userfaultfd: selftest: vm: allow to build in vm/ directory

to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
userfaultfd-selftest-vm-allow-to-build-in-vm-directory.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Andrea Arcangeli <[email protected]>
Date: Thu, 9 Mar 2017 16:17:14 -0800
Subject: userfaultfd: selftest: vm: allow to build in vm/ directory

From: Andrea Arcangeli <[email protected]>

[ Upstream commit 46aa6a302b53f543f8e8b8e1714dc5e449ad36a6 ]

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.

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

@@ -1,5 +1,9 @@
 # Makefile for vm selftests
 
+ifndef OUTPUT
+  OUTPUT := $(shell pwd)
+endif
+
 CFLAGS = -Wall -I ../../../../usr/include $(EXTRA_CFLAGS)
 BINARIES = compaction_test
 BINARIES += hugepage-mmap

Patches currently in stable-queue which might be from [email protected] are

queue-4.4/userfaultfd-selftest-vm-allow-to-build-in-vm-directory.patch queue-4.4/userfaultfd-shmem-__do_fault-requires-vm_fault_nopage.patch