[PATCH v2 0/3] cancel_hash per entry lock

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

From: Hao Xu <howeyxu@tencent.com>

Make per entry lock for cancel_hash array, this reduces usage of
completion_lock and contension between cancel_hash entries.

v1->v2:
 - Add per entry lock for poll/apoll task work code which was missed
   in v1
 - add an member in io_kiocb to track req's indice in cancel_hash

Hao Xu (3):
  io_uring: add hash_index and its logic to track req in cancel_hash
  io_uring: add an io_hash_bucket structure for smaller granularity lock
  io_uring: switch cancel_hash to use per list spinlock

 io_uring/cancel.c         | 15 +++++++--
 io_uring/cancel.h         |  6 ++++
 io_uring/fdinfo.c         |  9 ++++--
 io_uring/io_uring.c       |  8 +++--
 io_uring/io_uring_types.h |  3 +-
 io_uring/poll.c           | 64 +++++++++++++++++++++------------------
 6 files changed, 67 insertions(+), 38 deletions(-)


base-commit: d8271bf021438f468dab3cd84fe5279b5bbcead8
-- 
2.25.1