NAME
blkdev_issue_flush - queue a flush
SYNOPSIS
int blkdev_issue_flush (struct block_device * bdev,
sector_t * error_sector);
ARGUMENTS
bdev blockdev to issue flush for
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.
Caller must run wait_for_completion on its own.