commit 34045129b128fb3c0237b6af7c5a84b1ca9c0bf5
author Christoph Hellwig <hch@lst.de> Wed Apr 05 19:21:11 2017 +0200
committer Jens Axboe <axboe@fb.com> Sat Apr 08 11:25:38 2017 -0600
tree a85625b4c9d3f7a4eefd151e0ec14c7e17658dd9
parent cb365b9675fda026caba4cb5df83292cb7c0811a

block_dev: use blkdev_issue_zerout for hole punches

This gets us support for non-discard efficient write of zeroes (e.g. NVMe)
and prepares for removing the discard_zeroes_data flag.

Also remove a pointless discard support check, which is done in
blkdev_issue_discard already.

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>