tree fbb1e83537ed759ae63b5e1dc93f741acb30d552
parent d928be9f853b9755692d7e9aed402c1809a88e56
author Christoph Hellwig <hch@lst.de> 1491412870 +0200
committer Jens Axboe <axboe@fb.com> 1491672338 -0600

block: add a new BLKDEV_ZERO_NOFALLBACK flag

This avoids fallbacks to explicit zeroing in (__)blkdev_issue_zeroout if
the caller doesn't want them.

Also clean up the convoluted check for the return condition that this
new flag is added to.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@fb.com>