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src/linux/ns.hpp Lines 99 (patched) <https://reviews.apache.org/r/64226/#comment270514> Can you add some reason why there is a kernel version check there? src/linux/ns.cpp Lines 134 (patched) <https://reviews.apache.org/r/64226/#comment270513> indentation src/linux/ns.cpp Lines 136 (patched) <https://reviews.apache.org/r/64226/#comment270515> can you short circuit here if anything from `nsTypes` is not part of `nstypes()` so that we don't even go to the following user namespace kernel version check if user namespace is not even show up in `nstypes()` Then, you don't even need the final `return supported == nsTypes;` src/linux/ns.cpp Lines 143 (patched) <https://reviews.apache.org/r/64226/#comment270516> We don't print glog warning in helpers. What if we want to use this in launch helper? I'd prefer return `Try<bool>` - Jie Yu On Nov. 30, 2017, 10:03 p.m., James Peach wrote: > > ----------------------------------------------------------- > This is an automatically generated e-mail. To reply, visit: > https://reviews.apache.org/r/64226/ > ----------------------------------------------------------- > > (Updated Nov. 30, 2017, 10:03 p.m.) > > > Review request for mesos and Jie Yu. > > > Bugs: MESOS-8284 > https://issues.apache.org/jira/browse/MESOS-8284 > > > Repository: mesos > > > Description > ------- > > Added a `ns::supported` convenience API which directly expresses the > intent to probe whether a specific Linux namespace is supported on > the running kernel and takes care of kernel versioning special cases. > > > Diffs > ----- > > src/linux/ns.hpp e24d79a41eefcade343b2825b5a758d7d30a5f91 > src/linux/ns.cpp 5e2df1ed56432c6c1bfa04a31dba7f9f547d6139 > src/slave/containerizer/mesos/isolators/namespaces/ipc.cpp > 2d89d598d24e3bcf01d652ce3f586c9e3ccfc20b > src/slave/containerizer/mesos/isolators/namespaces/pid.cpp > 4f8253b58018581e022eb1832b9b07703cbd318d > src/slave/containerizer/mesos/isolators/network/port_mapping.cpp > d60052e9e1ccdfaaac6c0db6acfdae325cea6a9e > src/tests/containerizer/ns_tests.cpp > 61adf8525b1df1a70d7fd9c747d2106630a7627d > > > Diff: https://reviews.apache.org/r/64226/diff/2/ > > > Testing > ------- > > make check (Fedora 27) > > > Thanks, > > James Peach > >
