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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

February 2017 Kernel Hackers Manual 3.16