Hey, So far setns() was missing time namespace support. This was partially due to it simply not being implemented but also because vdso_join_timens() could still fail which made switching to multiple namespaces atomically problematic. This series first fixes vdso_join_timens() to never fail, introduces timens_commit() and finally adds CLONE_NEWTIME support for setns().
Please note, that arm is currently in the process of adding vdso_join_timens() support (cf. [1]) so it might make sense to split the vdso_join_timens() change out and route it to mainline as a fix so both my series and the arm support can be rebased on top of it. I've Cced the relevant people and I'm also replying to the arm thread now. [1]: https://lore.kernel.org/lkml/[email protected]/ Thanks! Christian Christian Brauner (3): timens: make vdso_join_timens() always succeed timens: add timens_commit() helper nsproxy: support CLONE_NEWTIME with setns() arch/x86/entry/vdso/vma.c | 6 ++---- include/linux/time_namespace.h | 13 +++++++++---- kernel/nsproxy.c | 21 +++++++++++++++++++-- kernel/time/namespace.c | 22 ++++++++-------------- 4 files changed, 38 insertions(+), 24 deletions(-) base-commit: b3a9e3b9622ae10064826dccb4f7a52bd88c7407 -- 2.27.0
