Contrary to the comment in __blkdev_issue_write_zeroes, nothing here
checks for a potential bi_size overflow.  Add a helper mirroring
the secure erase code for the check.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20240701165219.1571322-6-hch@lst.deSigned-off-by: Jens Axboe <axboe@kernel.dk>