BLK_QUEUE_ORDERED(9) Block Devices BLK_QUEUE_ORDERED(9)
NAME blk_queue_ordered - does this queue support ordered writes
SYNOPSIS int blk_queue_ordered(struct request_queue * q, unsigned ordered, prepare_flush_fn * prepare_flush_fn);
ARGUMENTS q the request queue
ordered one of QUEUE_ORDERED_*
prepare_flush_fn rq setup helper for cache flush ordered writes
DESCRIPTION This is old method and has been retained for kABI compatibility. Any new driver should be using and sticking to semantics of blk_queue_flush.
COPYRIGHT Kernel Hackers Manual 2.6. July 2015 BLK_QUEUE_ORDERED(9)