[PATCH v2 0/2] mm/migrate: optimize migrate_vma_setup() for holes

A simple optimization for migrate_vma_*() when the source vma is not an anonymous vma and a new test case to exercise it. This is based on linux-mm and is for Andrew Morton's tree.

Changes in v2: Do the same check for vma_is_anonymous() for pte_none(). Don't increment cpages if the page isn't migrating.

Ralph Campbell (2): mm/migrate: optimize migrate_vma_setup() for holes mm/migrate: add migrate-shared test for migrate_vma_*()

mm/migrate.c | 16 ++++++++++-- tools/testing/selftests/vm/hmm-tests.c | 35 ++++++++++++++++++++++++++ 2 files changed, 49 insertions(+), 2 deletions(-)