• Cheng Chang's avatar
    Remove memcpy from RandomAccessFileReader::Read in direct IO mode (#6455) · 0a0151fb
    Cheng Chang authored
    In direct IO mode, RandomAccessFileReader::Read allocates an internal aligned buffer, and then copies the result into the scratch buffer. If the result is only temporarily used inside a function, there is no need to do the memcpy and just let the result Slice refer to the internally allocated buffer.
    Pull Request resolved: https://github.com/facebook/rocksdb/pull/6455
    Test Plan: make check
    Differential Revision: D20106753
    Pulled By: cheng-chang
    fbshipit-source-id: 44f505843837bba47a56e3fa2c4dd3bd76486b58