On Mon, Jul 14, 2025 at 12:02 PM Benjamin Wang <benjamin.ah...@gmail.com>
wrote:

> I am not sure whether PostgreSQL depends on system call `fsyncdata` to
>  sync data to disk.
>

https://www.postgresql.org/docs/current/runtime-config-wal.html#GUC-WAL-SYNC-METHOD

David J.

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