BLK_QUEUE_FLUSH(9) Block Devices BLK_QUEUE_FLUSH(9)

NAME blk_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.

COPYRIGHT Kernel Hackers Manual 2.6. January 2013 BLK_QUEUE_FLUSH(9)