centos man page for blkdev_issue_flush

BLKDEV_ISSUE_FLUSH(9)						   Block Devices					     BLKDEV_ISSUE_FLUSH(9)

NAME
       blkdev_issue_flush - queue a flush

SYNOPSIS
       int blkdev_issue_flush(struct block_device * bdev, gfp_t gfp_mask, sector_t * error_sector);

ARGUMENTS
       bdev
	   blockdev to issue flush for

       gfp_mask
	   memory allocation flags (for bio_alloc)

       error_sector
	   error sector

DESCRIPTION
       Issue a flush for the block device in question. Caller can supply room for storing the error offset in case of a flush error, if they wish
       to. If WAIT flag is not passed then caller may check only what request was pushed in some internal queue for later handling.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						     BLKDEV_ISSUE_FLUSH(9)