It looks like it’s intended to be used with a batched creation of file descriptors that are known to allocated but not yet used (to cut down on total syscalls?)

It looks like it’s intended to be used with a batched creation of file descriptors that are known to allocated but not yet used (to cut down on total syscalls?) https://lore.kernel.org/io-uring/20200211223235.GA25104@localhost/ https://lore.kernel.org/io-uring/20200211223235.GA25104@loca... At least I think I’m reading this correctly.