btrfs-progs: add discard support to mkfs
commit43a06f07c7b64bc4cabfbbf2397fb17b666b155f
authorChristoph Hellwig <hch@lst.de>
Thu, 21 Apr 2011 20:24:07 +0000 (21 16:24 -0400)
committerChris Mason <chris.mason@oracle.com>
Tue, 25 Oct 2011 13:18:32 +0000 (25 09:18 -0400)
tree3a0bf4c3f5b63bb7fbdc6b810d710e3da7946a0e
parentb4d668ee6bcf93f097507df6d76fd0fca7d3888a
btrfs-progs: add discard support to mkfs

Discard the whole device before starting to create the filesystem structures.
Modelled after similar support in mkfs.xfs.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
btrfs_cmds.c
utils.c