Implement AbortIO using io_uring #10125
Conversation
akankshamahajan15
force-pushed
the
abort_with_posix
branch
from
3d09860
to
69738af
Compare
|
@akankshamahajan15 has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator. |
akankshamahajan15
force-pushed
the
abort_with_posix
branch
from
69738af
to
c1be501
Compare
|
@akankshamahajan15 has updated the pull request. You must reimport the pull request before landing. |
|
@akankshamahajan15 has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator. |
akankshamahajan15
force-pushed
the
abort_with_posix
branch
from
c1be501
to
afdebba
Compare
|
@akankshamahajan15 has updated the pull request. You must reimport the pull request before landing. |
|
@akankshamahajan15 has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator. |
akankshamahajan15
force-pushed
the
abort_with_posix
branch
from
afdebba
to
61d2ec2
Compare
|
@akankshamahajan15 has updated the pull request. You must reimport the pull request before landing. |
|
@akankshamahajan15 has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator. |
Summary: Test Plan: Reviewers: Subscribers: Tasks: Tags:
Summary: Test Plan: Reviewers: Subscribers: Tasks: Tags:
akankshamahajan15
force-pushed
the
abort_with_posix
branch
from
61d2ec2
to
ff733db
Compare
|
@akankshamahajan15 has updated the pull request. You must reimport the pull request before landing. |
Summary: Test Plan: Reviewers: Subscribers: Tasks: Tags:
|
@akankshamahajan15 has updated the pull request. You must reimport the pull request before landing. |
|
@akankshamahajan15 has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator. |
Summary: Implement AbortIO in posix using io_uring to cancel any pending read requests submitted. Its cancelled using io_uring_prep_cancel which sets the IORING_OP_ASYNC_CANCEL flag.
To cancel a request, the sqe must have ->addr set to the user_data of the request it wishes to cancel. If the request is cancelled successfully, the original request is completed with -ECANCELED and the cancel request is completed with a result of 0. If the request was already running, the original may or may not complete in error. The cancel request will complete with -EALREADY for that case. And finally, if the request to cancel wasn't found, the cancel request is completed with -ENOENT.
Reference: https://kernel.dk/io_uring-whatsnew.pdf,
https://lore.kernel.org/io-uring/d9a8d76d23690842f666c326631ecc2d85b6c1bc.1615566409.git.asml.silence@gmail.com/
Test Plan: Existing Posix tests.