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cgroup,cleaner: wait on level-triggered transitions #94

Merged
merged 2 commits into from
Feb 6, 2024
Merged

cgroup,cleaner: wait on level-triggered transitions #94

merged 2 commits into from
Feb 6, 2024

Commits on Feb 6, 2024

  1. cgroup,cleaner: ignore EINTR on epoll_wait 

    This avoids killing an active cleaner when attaching to it via
PTRACE_SEIZE, which is helpful when debugging.
    @Snaipe
    Snaipe committed Feb 6, 2024
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  2. cgroup,cleaner: wait on level-triggered transitions 

    The old code used edge-triggered transitions for epoll_wait on the
cgroup.events file, which meant we were losing some events if we weren't
fast enough to process them. This, in turn, caused the unlucky cleaner
processes to hang on an epoll_wait, unable to clean up the unpopulated
cgroup.

With this commit, we now operate on level-triggered transitions, which
allows cleaners to do their jobs properly.
    @Snaipe
    Snaipe committed Feb 6, 2024
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