Re: [PATCH] block: don't deal with discard limit in blkdev_issue_discard()

On 10/12/18 1:53 AM, Ming Lei wrote:

blk_queue_split() does respect this limit via bio splitting, so no need to do that in blkdev_issue_discard(), then we can align to normal bio submit(bio_add_page() & submit_bio()).

More importantly, this patch fixes one issue introduced in a22c4d7e34402cc ("block: re-add discard_granularity and alignment checks"), in which zero discard bio may be generated in case of zero alignment.

Thanks Ming, applied.