From: Simon Guo <wei.guo.simon@xxxxxxxxx>
This patch set fixes some mlock() misbehavior when mlock()/mlock2()
is invoked multiple times on intersect or same address regions.
And add selftest for this case.
Simon Guo (4):
mm: mlock: check against vma for actual mlock() size
mm: mlock: avoid increase mm->locked_vm on mlock() when already
mlock2(,MLOCK_ONFAULT)
selftest: split mlock2_ apis into separate mlock2.h
selftests/vm: add test for mlock() when areas are intersected.
mm/mlock.c | 53 ++++++++++++++++
tools/testing/selftests/vm/.gitignore | 1 +
tools/testing/selftests/vm/Makefile | 4 ++
tools/testing/selftests/vm/mlock-intersect-test.c | 76 +++++++++++++++++++++++
tools/testing/selftests/vm/mlock2-tests.c | 21 +------
tools/testing/selftests/vm/mlock2.h | 21 +++++++
6 files changed, 156 insertions(+), 20 deletions(-)
create mode 100644 tools/testing/selftests/vm/mlock-intersect-test.c
create mode 100644 tools/testing/selftests/vm/mlock2.h
--
1.8.3.1
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