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SubjectRe: /proc/sys/user/max_time_namespaces?
Hi Michael,

On 4/3/20 1:21 PM, Michael Kerrisk (man-pages) wrote:
> Dmitry, Andrei
> [Andrei, I mistyped your openvz address in an email of a few minutes
> ago ("[PATCH] ns: Fix time_for_children symlink"). You were CCed
> on your gmail address though.]
> In the namespaces(7) manual page there is documentation for
> these files:
> $ ls -1 /proc/sys/user/*namespaces
> /proc/sys/user/max_cgroup_namespaces
> /proc/sys/user/max_ipc_namespaces
> /proc/sys/user/max_mnt_namespaces
> /proc/sys/user/max_net_namespaces
> /proc/sys/user/max_pid_namespaces
> /proc/sys/user/max_user_namespaces
> /proc/sys/user/max_uts_namespaces
> These files allow one to limit on the number of namespaces
> of each type.
> However, there is no /proc/sys/user/max_time_namespaces file.
> Was this deliberate, or an oversight?

Thanks a lot for noticing this!
Yes, it's an oversight and examining the code I can see that it's an
actual user-visible regression: max_inotify_instances controls time
namespaces limit.

I've just sent a patch to fix the issue, Cc'ing @stable:

Thanks again,

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