[PATCH v7 0/5] task optimization

[Hao Xu <haoxu@linux.alibaba.com>]

v4->v5
- change the implementation of merge_wq_list

v5->v6
- change the logic of handling prior task list to:
  1) grabbed uring_lock: leverage the inline completion infra
  2) otherwise: batch __req_complete_post() calls to save
     completion_lock operations.

v6->v7
- add Pavel's fix of wrong spin unlock
- remove a patch and rebase work

Hao Xu (5):
  io-wq: add helper to merge two wq_lists
  io_uring: add a priority tw list for irq completion work
  io_uring: add helper for task work execution code
  io_uring: split io_req_complete_post() and add a helper
  io_uring: batch completion in prior_task_list

 fs/io-wq.h    |  22 ++++++++
 fs/io_uring.c | 142 ++++++++++++++++++++++++++++++++++++--------------
 2 files changed, 126 insertions(+), 38 deletions(-)

-- 
2.25.1