* Re: [GIT PULL] io_uring changes for 5.12-rc
[not found] <[email protected]>
@ 2021-02-17 23:33 ` Jens Axboe
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From: Jens Axboe @ 2021-02-17 23:33 UTC (permalink / raw)
To: Linus Torvalds; +Cc: io-uring
(Adding io-uring list, made a mistake in the first one and only added
linux-block)
On 2/17/21 11:43 AM, Jens Axboe wrote:
> Hi Linus,
>
> Highlights from this cycles are things like request recycling and
> task_work optimizations, which net us anywhere from 10-20% of speedups
> on workloads that mostly are inline. This work was originall done to put
> io_uring under memcg, which adds considerable overhead. But it's a
> really nice win as well. Also worth highlighting is the LOOKUP_CACHED
> work in the VFS, and using it in io_uring. Greatly speeds up the fast
> path for file opens.
>
> Note that this branch depends on Al's work.namei pull request that he
> sent in earlier.
>
> - Put io_uring under memcg protection. We accounted just the rings
> themselves under rlimit memlock before, now we account everything.
>
> - Request cache recycling, persistent across invocations (Pavel, me)
>
> - First part of a cleanup/improvement to buffer registration (Bijan)
>
> - SQPOLL fixes (Hao)
>
> - File registration NULL pointer fixup (Dan)
>
> - LOOKUP_CACHED support for io_uring
>
> - Disable /proc/thread-self/ for io_uring, like we do for /proc/self
>
> - Add Pavel to the io_uring MAINTAINERS entry
>
> - Tons of code cleanups and optimizations (Pavel)
>
> - Support for skip entries in file registration (Noah)
>
> Please pull!
>
>
> The following changes since commit 1048ba83fb1c00cd24172e23e8263972f6b5d9ac:
>
> Linux 5.11-rc6 (2021-01-31 13:50:09 -0800)
>
> are available in the Git repository at:
>
> git://git.kernel.dk/linux-block.git tags/for-5.12/io_uring-2021-02-17
>
> for you to fetch changes up to 0b81e80c813f92520667c872d499a2dba8377be6:
>
> io_uring: tctx->task_lock should be IRQ safe (2021-02-16 11:11:20 -0700)
>
> ----------------------------------------------------------------
> for-5.12/io_uring-2021-02-17
>
> ----------------------------------------------------------------
> Bijan Mottahedeh (10):
> io_uring: modularize io_sqe_buffer_register
> io_uring: modularize io_sqe_buffers_register
> io_uring: rename file related variables to rsrc
> io_uring: generalize io_queue_rsrc_removal
> io_uring: separate ref_list from fixed_rsrc_data
> io_uring: add rsrc_ref locking routines
> io_uring: split alloc_fixed_file_ref_node
> io_uring: create common fixed_rsrc_ref_node handling routines
> io_uring: create common fixed_rsrc_data allocation routines
> io_uring: make percpu_ref_release names consistent
>
> Colin Ian King (1):
> io_uring: remove redundant initialization of variable ret
>
> Dan Carpenter (1):
> io_uring: Fix NULL dereference in error in io_sqe_files_register()
>
> Hao Xu (2):
> io_uring: check kthread parked flag before sqthread goes to sleep
> io_uring: fix possible deadlock in io_uring_poll
>
> Jens Axboe (19):
> Merge branch 'work.namei' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs into for-5.12/io_uring
> io_uring: enable LOOKUP_CACHED path resolution for filename lookups
> fs: provide locked helper variant of close_fd_get_file()
> io_uring: get rid of intermediate IORING_OP_CLOSE stage
> io_uring/io-wq: kill off now unused IO_WQ_WORK_NO_CANCEL
> io_uring: use persistent request cache
> io_uring: provide FIFO ordering for task_work
> io_uring: enable req cache for task_work items
> io_uring: enable req cache for IRQ driven IO
> io_uring: enable kmemcg account for io_uring requests
> io_uring: place ring SQ/CQ arrays under memcg memory limits
> io_uring: assign file_slot prior to calling io_sqe_file_register()
> io_uring: move submit side state closer in the ring
> io-wq: clear out worker ->fs and ->files
> io_uring: allow task match to be passed to io_req_cache_free()
> io_uring: add helper to free all request caches
> io_uring: kill cached requests from exiting task closing the ring
> proc: don't allow async path resolution of /proc/thread-self components
> io_uring: tctx->task_lock should be IRQ safe
>
> Pavel Begunkov (69):
> io_uring: split ref_node alloc and init
> io_uring: optimise io_rw_reissue()
> io_uring: refactor io_resubmit_prep()
> io_uring: cleanup personalities under uring_lock
> io_uring: inline io_async_submit()
> io_uring: inline __io_commit_cqring()
> io_uring: further deduplicate #CQ events calc
> io_uring: simplify io_alloc_req()
> io_uring: remove __io_state_file_put
> io_uring: deduplicate failing task_work_add
> io_uring: add a helper timeout mode calculation
> io_uring: help inlining of io_req_complete()
> io_uring: don't flush CQEs deep down the stack
> io_uring: save atomic dec for inline executed reqs
> io_uring: ensure only sqo_task has file notes
> io_uring: consolidate putting reqs task
> io_uring: cleanup files_update looping
> MAINTAINERS: update io_uring section
> io_uring: fix inconsistent lock state
> io_uring: kill not used needs_file_no_error
> io_uring: inline io_req_drop_files()
> io_uring: remove work flags after cleanup
> io_uring: deduplicate adding to REQ_F_INFLIGHT
> io_uring: simplify do_read return parsing
> io_uring: deduplicate core cancellations sequence
> io_uring: refactor scheduling in io_cqring_wait
> io_uring: refactor io_cqring_wait
> io_uring: refactor io_read for unsupported nowait
> io_uring: further simplify do_read error parsing
> io_uring: let io_setup_async_rw take care of iovec
> io_uring: don't forget to adjust io_size
> io_uring: inline io_read()'s iovec freeing
> io_uring: highlight read-retry loop
> io_uring: treat NONBLOCK and RWF_NOWAIT similarly
> io_uring: io_import_iovec return type cleanup
> io_uring: deduplicate file table slot calculation
> io_uring/io-wq: return 2-step work swap scheme
> io_uring: set msg_name on msg fixup
> io_uring: clean iov usage for recvmsg buf select
> io_uring: refactor sendmsg/recvmsg iov managing
> io_uring: cleanup up cancel SQPOLL reqs across exec
> io_uring: replace force_nonblock with flags
> io_uring: make op handlers always take issue flags
> io_uring: don't propagate io_comp_state
> io_uring: don't keep submit_state on stack
> io_uring: remove ctx from comp_state
> io_uring: don't reinit submit state every time
> io_uring: replace list with array for compl batch
> io_uring: submit-completion free batching
> io_uring: remove fallback_req
> io_uring: count ctx refs separately from reqs
> io_uring: persistent req cache
> io_uring: feed reqs back into alloc cache
> io_uring: take comp_state from ctx
> io_uring: defer flushing cached reqs
> io_uring: unpark SQPOLL thread for cancelation
> io_uring: clean up io_req_free_batch_finish()
> io_uring: simplify iopoll reissuing
> io_uring: move res check out of io_rw_reissue()
> io_uring: inline io_complete_rw_common()
> io_uring: take compl state from submit state
> io_uring: optimise out unlikely link queue
> io_uring: optimise SQPOLL mm/files grabbing
> io_uring: don't duplicate io_req_task_queue()
> io_uring: save ctx put/get for task_work submit
> io_uring: don't split out consume out of SQE get
> io_uring: don't check PF_EXITING from syscall
> io_uring: clean io_req_find_next() fast check
> io_uring: optimise io_init_req() flags setting
>
> Yejune Deng (1):
> io_uring: simplify io_remove_personalities()
>
> noah (1):
> io_uring: Add skip option for __io_sqe_files_update
>
> MAINTAINERS | 5 +
> fs/file.c | 36 +-
> fs/internal.h | 1 +
> fs/io-wq.c | 31 +-
> fs/io-wq.h | 14 +-
> fs/io_uring.c | 2658 +++++++++++++++++----------------
> fs/namei.c | 8 +-
> fs/proc/self.c | 2 +-
> fs/proc/thread_self.c | 7 +
> include/linux/io_uring.h | 14 +
> include/uapi/linux/io_uring.h | 10 +
> 11 files changed, 1435 insertions(+), 1351 deletions(-)
>
--
Jens Axboe
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