On 12/8/24 12:26, Christoph Hellwig wrote: > What is the point if this doesn't actually do anything but returning > -EIOCBQUEUED? It returns EIOCBQUEUED to say that io_uring has queued the request, and adds the task to io_uring's thread pool for it to be completed. > Note that that the internals of the btrfs encoded read is built > around kiocbs anyway, so you might as well turn things upside down, > implement a real async io_uring cmd and just wait for it to complete > to implement the existing synchronous ioctl. I'd have to look into it, but that sounds like it could be an interesting future refactor. Mark
