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| author | Pavel Begunkov <asml.silence@gmail.com> | 2023-01-20 16:38:05 +0000 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2023-01-20 09:49:29 -0700 |
| commit | 56d8e3180c065c9b78ed77afcd0cf99677a4e22f (patch) | |
| tree | 4ef1be544452afbc796a78ea5178016e695c2cb5 /lib/list_debug.c | |
| parent | e12d7a46f65ae4b7d58a5e0c1cbfa825cf8d830d (diff) | |
| download | linux-56d8e3180c065c9b78ed77afcd0cf99677a4e22f.tar.gz linux-56d8e3180c065c9b78ed77afcd0cf99677a4e22f.tar.bz2 linux-56d8e3180c065c9b78ed77afcd0cf99677a4e22f.zip | |
io_uring/msg_ring: fix flagging remote execution
There is a couple of problems with queueing a tw in io_msg_ring_data()
for remote execution. First, once we queue it the target ring can
go away and so setting IORING_SQ_TASKRUN there is not safe. Secondly,
the userspace might not expect IORING_SQ_TASKRUN.
Extract a helper and uniformly use TWA_SIGNAL without TWA_SIGNAL_NO_IPI
tricks for now, just as it was done in the original patch.
Cc: stable@vger.kernel.org
Fixes: 6d043ee1164ca ("io_uring: do msg_ring in target task via tw")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'lib/list_debug.c')
0 files changed, 0 insertions, 0 deletions