linux-next: build warning after merge of the block tree

Hi all,

After merging the block tree, today's linux-next build (htmldocs)
produced this warning:

block/blk-core.c:1082: warning: Function parameter or member 'iob' not described in 'bio_poll'

Introduced by commit

  5a72e899ceb4 ("block: add a struct io_comp_batch argument to fops->iopoll()")

-- 
Cheers,
Stephen Rothwell