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linux/io_uring
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Jens Axboe 790b68b32a io_uring/net: always setup an io_async_msghdr 
Rather than use an on-stack one and then need to allocate and copy if
async execution is required, always grab one upfront. This should be
very cheap, and potentially even have cache hotness benefits for
back-to-back send/recv requests.

For any recv type of request, this is probably a good choice in general,
as it's expected that no data is available initially. For send this is
not necessarily the case, as space in the socket buffer is expected to
be available. However, getting a cached io_async_msghdr is very cheap,
and as it should be cache hot, probably the difference here is neglible,
if any.

A nice side benefit is that io_setup_async_msg can get killed
completely, which has some nasty iovec manipulation code.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-04-15 08:10:25 -06:00
..
advise.c io_uring: always go async for unsupported fadvise flags 2023-01-29 15:18:26 -07:00
advise.h
alloc_cache.h io_uring/alloc_cache: shrink default max entries from 512 to 128 2024-04-15 08:10:25 -06:00
cancel.c io_uring/cancel: don't default to setting req->work.cancel_seq 2024-02-08 13:27:06 -07:00
cancel.h io_uring/cancel: don't default to setting req->work.cancel_seq 2024-02-08 13:27:06 -07:00
epoll.c io_uring: undeprecate epoll_ctl support 2023-05-26 20:22:41 -06:00
epoll.h
fdinfo.c io_uring: Fix sqpoll utilization check racing with dying sqpoll 2024-03-09 07:27:09 -07:00
fdinfo.h
filetable.c io_uring: drop any code related to SCM_RIGHTS 2023-12-19 12:36:34 -07:00
filetable.h io_uring: expand main struct io_kiocb flags to 64-bits 2024-02-08 13:27:03 -07:00
fs.c io_uring/fs: consider link->flags when getting path for LINKAT 2023-11-20 09:01:42 -07:00
fs.h
futex.c io_uring/futex: always remove futex entry for cancel all 2024-03-15 15:37:15 -06:00
futex.h io_uring: add support for vectored futex waits 2023-09-29 02:37:08 -06:00
io-wq.c io-wq: fully initialize wqe before calling cpuhp_state_add_instance_nocalls() 2023-10-05 14:11:18 -06:00
io-wq.h io_uring: break out of iowq iopoll on teardown 2023-09-07 09:02:27 -06:00
io_uring.c io_uring: remove timeout/poll specific cancelations 2024-04-15 08:10:25 -06:00
io_uring.h io_uring: clean up io_lockdep_assert_cq_locked 2024-04-15 08:10:24 -06:00
kbuf.c io_uring/kbuf: hold io_buffer_list reference over mmap 2024-04-02 19:03:27 -06:00
kbuf.h io_uring/kbuf: hold io_buffer_list reference over mmap 2024-04-02 19:03:27 -06:00
Makefile io-uring: add napi busy poll support 2024-02-09 11:54:19 -07:00
msg_ring.c io_uring: use io_file_from_index in io_msg_grab_file 2023-06-20 09:36:22 -06:00
msg_ring.h io_uring: get rid of double locking 2022-12-07 06:47:13 -07:00
napi.c io_uring/napi: enable even with a timeout of 0 2024-02-15 15:37:28 -07:00
napi.h io_uring: add register/unregister napi function 2024-02-09 11:54:32 -07:00
net.c io_uring/net: always setup an io_async_msghdr 2024-04-15 08:10:25 -06:00
net.h io_uring/net: switch io_recv() to using io_async_msghdr 2024-04-15 08:10:25 -06:00
nop.c
nop.h
notif.c io_uring/notif: add constant for ubuf_info flags 2023-04-15 14:21:04 -06:00
notif.h io_uring/notif: add constant for ubuf_info flags 2023-04-15 14:21:04 -06:00
opdef.c io_uring/net: switch io_recv() to using io_async_msghdr 2024-04-15 08:10:25 -06:00
opdef.h io_uring/rw: mark readv/writev as vectored in the opcode definition 2023-09-21 12:00:46 -06:00
openclose.c io_uring: enable audit and restrict cred override for IORING_OP_FIXED_FD_INSTALL 2024-01-23 15:25:14 -07:00
openclose.h io_uring/openclose: add support for IORING_OP_FIXED_FD_INSTALL 2023-12-12 07:42:57 -07:00
poll.c io_uring: refactor io_fill_cqe_req_aux 2024-04-15 08:10:24 -06:00
poll.h io_uring/rw: ensure poll based multishot read retries appropriately 2024-01-28 20:37:11 -07:00
refs.h
register.c io_uring: add register/unregister napi function 2024-02-09 11:54:32 -07:00
register.h io_uring/register: move io_uring_register(2) related code to register.c 2023-12-19 08:54:20 -07:00
rsrc.c io_uring: drop any code related to SCM_RIGHTS 2023-12-19 12:36:34 -07:00
rsrc.h io_uring: Don't include af_unix.h. 2024-02-12 19:02:11 -07:00
rw.c io_uring: refactor io_fill_cqe_req_aux 2024-04-15 08:10:24 -06:00
rw.h io_uring/rw: add separate prep handler for fixed read/write 2023-11-06 07:43:16 -07:00
slist.h io_uring: silence variable ‘prev’ set but not used warning 2023-03-09 10:10:58 -07:00
splice.c splice: return type ssize_t from all helpers 2023-12-12 16:19:59 +01:00
splice.h
sqpoll.c io_uring/sqpoll: early exit thread if task_context wasn't allocated 2024-03-18 20:22:42 -06:00
sqpoll.h io_uring/sqpoll: statistics of the true utilization of sq threads 2024-03-01 06:28:19 -07:00
statx.c io_uring: for requests that require async, force it 2023-01-29 15:18:26 -07:00
statx.h
sync.c io_uring: for requests that require async, force it 2023-01-29 15:18:26 -07:00
sync.h
tctx.c io_uring: Add io_uring_setup flag to pre-register ring fd and never install it 2023-05-16 08:06:00 -06:00
tctx.h io_uring: simplify __io_uring_add_tctx_node 2022-10-07 12:25:30 -06:00
timeout.c io_uring: refactor io_fill_cqe_req_aux 2024-04-15 08:10:24 -06:00
timeout.h io_uring: remove unused return from io_disarm_next 2022-09-21 13:15:01 -06:00
truncate.c io_uring: add support for ftruncate 2024-02-09 09:04:39 -07:00
truncate.h io_uring: add support for ftruncate 2024-02-09 09:04:39 -07:00
uring_cmd.c io_uring: remove struct io_tw_state::locked 2024-04-15 08:10:24 -06:00
uring_cmd.h io_uring/cmd: move io_uring_try_cancel_uring_cmd() 2024-04-15 08:10:24 -06:00
waitid.c io_uring: remove struct io_tw_state::locked 2024-04-15 08:10:24 -06:00
waitid.h io_uring: add IORING_OP_WAITID support 2023-09-21 12:04:45 -06:00
xattr.c io_uring: use file_mnt_idmap helper 2024-02-06 19:55:14 -07:00
xattr.h