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| author | Pavel Begunkov <asml.silence@gmail.com> | 2023-01-04 01:34:02 +0000 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2023-01-03 19:03:28 -0700 |
| commit | 9ffa13ff78a0a55df968a72d6f0ebffccee5c9f4 (patch) | |
| tree | 3576e12a99775bf257075621191860613552fd4b /init | |
| parent | af82425c6a2d2f347c79b63ce74fca6dc6be157f (diff) | |
io_uring: pin context while queueing deferred tw
Unlike normal tw, nothing prevents deferred tw to be executed right
after an tw item added to ->work_llist in io_req_local_work_add(). For
instance, the waiting task may get waken up by CQ posting or a normal
tw. Thus we need to pin the ring for the rest of io_req_local_work_add()
Cc: stable@vger.kernel.org
Fixes: c0e0d6ba25f18 ("io_uring: add IORING_SETUP_DEFER_TASKRUN")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/1a79362b9c10b8523ef70b061d96523650a23344.1672795998.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'init')
0 files changed, 0 insertions, 0 deletions