Hi Linus,
As it sometimes happens, a two reporst came in around the merge window
open that led to some fixes. Hence this one is a bit bigger than usual
followup fixes, but most of it will be going towards stable, outside of
the fixes that are addressing regressions from this merge window. In
detail:
- postgres is a heavy user of signals between tasks, and if we're
unlucky this can interfere with io-wq worker creation. Make sure we're
resilient against unrelated signal handling. This set of changes also
includes hardening against allocation failures, which could previously
had led to stalls.
- Some use cases that end up having a mix of bounded and unbounded work
would have starvation issues related to that. Split the pending work
lists to handle that better.
- Completion trace int -> unsigned -> long fix
- Fix issue with REGISTER_IOWQ_MAX_WORKERS and SQPOLL
- Fix regression with hash wait lock in this merge window
- Fix retry issued on block devices (Ming)
- Fix regression with links in this merge window (Pavel)
- Fix race with multi-shot poll and completions (Xiaoguang)
- Ensure regular file IO doesn't inadvertently skip completion batching
(Pavel)
- Ensure submissions are flushed after running task_work (Pavel)
Please pull!
The following changes since commit 87df7fb922d18e96992aa5e824aa34b2065fef59:
io-wq: fix wakeup race when adding new work (2021-08-30 07:45:47 -0600)
are available in the Git repository at:
git://git.kernel.dk/linux-block.git tags/for-5.15/io_uring-2021-09-04
for you to fetch changes up to 2fc2a7a62eb58650e71b4550cf6fa6cc0a75b2d2:
io_uring: io_uring_complete() trace should take an integer (2021-09-03 16:59:06 -0600)
----------------------------------------------------------------
for-5.15/io_uring-2021-09-04
----------------------------------------------------------------
Jens Axboe (10):
io-wq: fix race between adding work and activating a free worker
io_uring: IORING_OP_WRITE needs hash_reg_file set
io-wq: ensure that hash wait lock is IRQ disabling
io-wq: fix queue stalling race
io-wq: split bounded and unbounded work into separate lists
io-wq: only exit on fatal signals
io-wq: get rid of FIXED worker flag
io-wq: make worker creation resilient against signals
io_uring: ensure IORING_REGISTER_IOWQ_MAX_WORKERS works with SQPOLL
io_uring: io_uring_complete() trace should take an integer
Ming Lei (1):
io_uring: retry in case of short read on block device
Pavel Begunkov (4):
io_uring: fix queueing half-created requests
io_uring: don't submit half-prepared drain request
io_uring: don't disable kiocb_done() CQE batching
io_uring: prolong tctx_task_work() with flushing
Xiaoguang Wang (1):
io_uring: fix possible poll event lost in multi shot mode
fs/io-wq.c | 424 ++++++++++++++++++++++++----------------
fs/io_uring.c | 76 ++++++-
include/trace/events/io_uring.h | 6 +-
3 files changed, 323 insertions(+), 183 deletions(-)
--
Jens Axboe
