linux-stable.git/include/linux/io_uring.h, branch v5.15.208

io_uring/unix: drop usage of io_uring socket

2024-03-26T22:21:11+00:00

Commit a4104821ad651d8a0b374f0b2474c345bbb42f82 upstream.

Since we no longer allow sending io_uring fds over SCM_RIGHTS, move to
using io_is_uring_fops() to detect whether this is a io_uring fd or not.
With that done, kill off io_uring_get_socket() as nobody calls it
anymore.

This is in preparation to yanking out the rest of the core related to
unix gc with io_uring.

Signed-off-by: Jens Axboe 
Signed-off-by: Sasha Levin

io_uring: remove files pointer in cancellation functions

2021-08-23T19:10:37+00:00

When doing cancellation, we use a parameter to indicate where it's from
do_exit or exec. So a boolean value is good enough for this, remove the
struct files* as it is not necessary.

Signed-off-by: Hao Xu 
[axboe: fixup io_uring_files_cancel for !CONFIG_IO_URING]
Signed-off-by: Jens Axboe

io_uring: extract io_uring_files_cancel() in io_uring_task_cancel()

2021-08-23T19:10:37+00:00

Extract io_uring_files_cancel() call in io_uring_task_cancel() to make
io_uring_files_cancel() and io_uring_task_cancel() coherent and easy to
read.

Signed-off-by: Hao Xu 
Signed-off-by: Jens Axboe

io_uring: unify files and task cancel

2021-04-12T01:30:41+00:00

Now __io_uring_cancel() and __io_uring_files_cancel() are very similar
and mostly differ by how we count requests, merge them and allow
tctx_inflight() to handle counting.

Signed-off-by: Pavel Begunkov 
Link: https://lore.kernel.org/r/1a5986a97df4dc1378f3fe0ca1eb483dbcf42112.1618101759.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe

io_uring: remove structures from include/linux/io_uring.h

2021-03-18T15:44:35+00:00

Link: https://lore.kernel.org/r/8c1d14f3748105f4caeda01716d47af2fa41d11c.1615809009.git.metze@samba.org
Signed-off-by: Stefan Metzmacher 
Signed-off-by: Jens Axboe

io_uring: index io_uring->xa by ctx not file

2021-03-07T21:12:43+00:00

We don't use task file notes anymore, and no need left in indexing
task->io_uring->xa by file, and replace it with ctx. It's better
design-wise, especially since we keep a dangling file, and so have to
keep an eye on not dereferencing it.

Signed-off-by: Pavel Begunkov 
Signed-off-by: Jens Axboe

io_uring: destroy io-wq on exec

2021-03-04T13:36:22+00:00

Destroy current's io-wq backend and tctx on __io_uring_task_cancel(),
aka exec(). Looks it's not strictly necessary, because it will be done
at some point when the task dies and changes of creds/files/etc. are
handled, but better to do that earlier to free io-wq and not potentially
lock previous mm and other resources for the time being.

It's safe to do because we wait for all requests of the current task to
complete, so no request will use tctx afterwards. Note, that
io_uring_files_cancel() may leave some requests for later reaping, so it
leaves tctx intact, that's ok as the task is dying anyway.

Signed-off-by: Pavel Begunkov 
Signed-off-by: Jens Axboe

io_uring: ensure io-wq context is always destroyed for tasks

2021-02-24T03:33:36+00:00

If the task ends up doing no IO, the context list is empty and we don't
call into __io_uring_files_cancel() when the task exits. This can cause
a leak of the io-wq structures.

Ensure we always call __io_uring_files_cancel(), even if the task
context list is empty.

Fixes: 5aa75ed5b93f ("io_uring: tie async worker side to the task context")
Signed-off-by: Jens Axboe

io_uring: remove io_identity

2021-02-22T00:25:22+00:00

We are no longer grabbing state, so no need to maintain an IO identity
that we COW if there are changes.

Signed-off-by: Jens Axboe

io_uring: tie async worker side to the task context

2021-02-22T00:25:22+00:00

Move it outside of the io_ring_ctx, and tie it to the io_uring task
context.

Signed-off-by: Jens Axboe