BLK_QUEUE_FLUSH(9) Block Devices BLK_QUEUE_FLUSH(9)NAMEblk_queue_flush - configure queue´s cache flush capability
SYNOPSIS
void blk_queue_flush(struct request_queue * q, unsigned int flush);
ARGUMENTS
q
the request queue for the device
flush
0, REQ_FLUSH or REQ_FLUSH | REQ_FUA
DESCRIPTION
Tell block layer cache flush capability of q. If it supports flushing,
REQ_FLUSH should be set. If it supports bypassing write cache for
individual writes, REQ_FUA should be set.
COPYRIGHTKernel Hackers Manual 2.6. November 2013 BLK_QUEUE_FLUSH(9)