• [$] Filtering fanotify events with BPF

    From LWN.net@86:200/23 to All on Wed May 7 06:40:08 2025


    Linux systems can have large filesystems; trying to keep up with the
    stream of

    fanotify filesystem-monitoring notifications for them can be a struggle. Fanotify is one of a few ways to monitor accesses to filesystems provided by the kernel.
    Song Liu led a discussion
    on how to improve in-kernel filtering of fanotify events to a joint
    session of the filesystem and BPF tracks at the 2025 Linux Storage, Filesystem, Memory-Management, and BPF Summit. He wants to combine the best parts of a few different approaches to efficiently filter filesystem events.

    https://lwn.net/Articles/1018493/
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