Comment 1 for bug 1956720

Why is this commit not included here?

commit f95dc207b93da9c88ddbb7741ec3730c6657b88e
Author: Jens Axboe <email address hidden>
AuthorDate: Tue Aug 31 13:57:32 2021 -0600
Commit: Jens Axboe <email address hidden>
CommitDate: Wed Sep 1 12:35:30 2021 -0600

    io-wq: split bounded and unbounded work into separate lists

    We've got a few issues that all boil down to the fact that we have one
    list of pending work items, yet two different types of workers to
    serve them. This causes some oddities around workers switching type and
    even hashed work vs regular work on the same bounded list.

    Just separate them out cleanly, similarly to how we already do
    accounting of what is running. That provides a clean separation and
    removes some corner cases that can cause stalls when handling IO
    that is punted to io-wq.

    Fixes: ecc53c48c13d ("io-wq: check max_worker limits if a worker transitions bound state")
    Signed-off-by: Jens Axboe <email address hidden>

Other io_uring related patches where backported here even without being
in linux-stable/linux-5.14.y. So why is this missing?

See also https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1952222