io_uring: fix sequencing issues with linked timeouts

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We have an issue with timeout links that are deeper in the submit chain,
because we only handle it upfront, not from later submissions. Move the
prep + issue of the timeout link to the async work prep handler, and do
it normally for non-async queue. If we validate and prepare the timeout
links upfront when we first see them, there's nothing stopping us from
supporting any sort of nesting.

Fixes: 2665abfd75 ("io_uring: add support for linked SQE timeouts")
Reported-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Jens Axboe 2019-11-14 19:39:52 -07:00

parent ad8a48acc2

commit 94ae5e77a9

1 changed files with 61 additions and 41 deletions

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fs/io_uring.c

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