• [$] Buffered atomic writes, writethrough, and more

    From LWN.net@618:250/24 to All on Fri May 15 06:40:08 2026
    In back-to-back sessions at the start of the 2026 Linux Storage,
    Filesystem, Memory Management, and BPF Summit (which spilled over into
    a third slot), the atomic-buffered-writes
    feature was discussed. In the first session, Pankaj Raghav and Andres
    Freund set the stage with an introduction to the problem, along with a use
    case for its solution: the PostgreSQL database system. In the second, Ojaswin Mujoo
    described a potential way forward for the feature using an approach based
    on writethrough, which effectively means that the kernel immediately writes
    the data to disk instead of waiting for writeback from the page cache to occur. As might be
    expected, there was quite a bit of discussion among the assembled
    filesystems and storage developers during the combined sessions for those tracks.

    https://lwn.net/Articles/1072019/
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