The biolatency tool attaches kprobe at blk_account_io_completion() function
to check when a request is finished. But sometimes request can be finished
partially and blk_account_io_completion() is called again.
The blk_account_io_done() is called when a request is finally
finished and biolatency tool should attach blk_account_io_done(), not
blk_account_io_completion().
Signed-off-by: Gioh Kim <gi-oh.kim@cloud.ionos.com>