This will allow the trace event to know the full size of the data
intended to be copied and silence read overflow checks.
Reported-by: NJohn Garry <john.garry@huawei.com>
Suggested-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NKeith Busch <kbusch@kernel.org>
Signed-off-by: NChristoph Hellwig <hch@lst.de>