While iterating a list, a particular request may need to be removed for
special handling. Provide an iterator that can safely handle that.
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NKeith Busch <kbusch@kernel.org>
Link: https://lore.kernel.org/r/20220105170518.3181469-3-kbusch@kernel.orgSigned-off-by: NJens Axboe <axboe@kernel.dk>