block: update request stacking methods to support discards
On Sat, Jul 24, 2010 at 12:09:26PM -0400, Mike Snitzer wrote:
> Propagate REQ_DISCARD in cmd_flags when cloning a discard request.
> Skip blk_rq_check_limits's existing checks for discard requests because
> discard limits will have already been checked in blkdev_issue_discard.
Reviewed-by: Christoph Hellwig <email@example.com>
dm-devel mailing list