On Mon, Mar 20, 2023 at 12:49:26PM -0700, Keith Busch wrote: > From: Keith Busch <kbusch@xxxxxxxxxx> > > io_uring provides the only way user space can poll completions, and that > always sets BLK_POLL_NOSLEEP. This effectively makes hybrid polling dead > code, so remove it and everything supporting it. Hybrid polling was effectively killed off with 9650b453a3d4b1, "block: ignore RWF_HIPRI hint for sync dio", so we could add a "Fixes: " for that. It was still potentially reachable through io_uring until d729cf9acb93119, "io_uring: don't sleep when polling for I/O", but hybrid polling probably should not have been reachable through that async interface from the beginning.
