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Removing all vma from the VM is best effort -- we only remove all those ready to be removed, so forgive and VMA that becomes pinned. While forgiving those that become pinned, also take a second look for any that became unpinned as we waited. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Acked-by: Mika Kuoppala <mika.kuoppala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191205113726.413351-1-chris@chris-wilson.co.uk