diff mbox

[3/6] btrfs: add zeroing clear operation

Message ID b763205a723aff19e895b7634a19d92a6897a868.1524233244.git.dsterba@suse.com (mailing list archive)
State New, archived
Headers show

Commit Message

David Sterba April 20, 2018, 2:21 p.m. UTC 
Signed-off-by: David Sterba <dsterba@suse.com>
---
 fs/btrfs/ctree.h       | 1 +
 fs/btrfs/extent-tree.c | 3 +++
 2 files changed, 4 insertions(+)
diff mbox

Patch

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 7cde72683b8e..772cb4ccc5f7 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -679,6 +679,7 @@  struct btrfs_stripe_hash {
  */
 enum btrfs_clear_op_type {
 	BTRFS_CLEAR_OP_DISCARD = 0,
+	BTRFS_CLEAR_OP_ZERO,
 	BTRFS_NR_CLEAR_OP_TYPES,
 };
 
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index b317f8ee42a9..800aaf45e6bd 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -2041,6 +2041,9 @@  static int btrfs_issue_clear_op(struct block_device *bdev, u64 start, u64 size,
 	case BTRFS_CLEAR_OP_DISCARD:
 		return blkdev_issue_discard(bdev, start >> 9, size >> 9,
 				GFP_NOFS, 0);
+	case BTRFS_CLEAR_OP_ZERO:
+		return blkdev_issue_zeroout(bdev, start >> 9, size >> 9,
+				GFP_NOFS, 0);
 	default:
 		return -EOPNOTSUPP;
 	}