io_uring/kbuf: get rid of lower BGID lists
commit 09ab7eff upstream. Just rely on the xarray for any kind of bgid. This simplifies things, and it really doesn't bring us much, if anything. Cc: stable@vger.kernel.org # v6.4+ Signed-off-by:Jens Axboe <axboe@kernel.dk> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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