在 2021/12/16 上午6:08, Pavel Begunkov 写道:
That's mostly a bug fixing set, some of the problems are listed in 5/7. The main part is 5/7, which is bulky but at this point it's hard (if possible) to do anything without breaking a dozen of things on the way, so I consider it necessary evil. It also addresses one of two problems brought up by Eric Biggers for aio, specifically poll rewait. There is no poll-free support yet. As a side effect it also changes performance characteristics, adding extra atomics but removing io_kiocb referencing, improving rewait, etc. There are also drafts on optimising locking needed for hashing, those will go later.
Great, seems now we can have per node bit lock for hash list.
Performance measurements is a TODO, but the main goal lies in correctness and maintainability. Pavel Begunkov (7): io_uring: remove double poll on poll update io_uring: refactor poll update io_uring: move common poll bits io_uring: kill poll linking optimisation io_uring: poll rework io_uring: single shot poll removal optimisation io_uring: use completion batching for poll rem/upd fs/io_uring.c | 649 ++++++++++++++++++++++---------------------------- 1 file changed, 287 insertions(+), 362 deletions(-)
