[Libguestfs] [PATCH libnbd 0/3] Disablble pread buffer initiialization

Disbaling pread initialization is atually measurable and gives small speedup in nbdcopy and some examples. Some cases are safer; in copy-libev example, we allocate all buffers with calloc() and resuse them for the entire copy, so the initialization is completly useless. In nbdcopy and Go aio_copy example, we allocate new buffer using malloc(), so when working with bad server that does not return all data chunks in structured reply, we can leak uninitialized memory to the destination server. I think this issue should be solved by libnbd; it should verfify that the server return all the expected chunks and fail the request if not. Nir Soffer (3): golang: examples: Do not initialize pread buffer examples: copy-libev: Do not initialize pread buffer copy: Do not initialize read buffer copy/nbd-ops.c | 1 + examples/copy-libev.c | 6 ++++++ golang/examples/aio_copy/aio_copy.go | 5 +++++ golang/examples/simple_copy/simple_copy.go | 5 +++++ 4 files changed, 17 insertions(+) -- 2.35.1