51bdfae010
Summary: Add assertions to check direct IO's alignment requirements in MultiRead. Pull Request resolved: https://github.com/facebook/rocksdb/pull/6739 Test Plan: make check Reviewed By: siying Differential Revision: D21143825 Pulled By: cheng-chang fbshipit-source-id: 26f1623b062a1851080771128feac0669a61f5e9