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authorLi Zefan <lizf@cn.fujitsu.com>2010-10-25 15:12:50 +0800
committerLi Zefan <lizf@cn.fujitsu.com>2010-12-22 23:15:48 +0800
commit1a419d85a76853d7d04e9b6280a80e96770bf3e3 (patch)
tree01535c5571208561af5d475eaa151e1c2f936f57 /fs/btrfs/ioctl.h
parenta6fa6fae40ec336c7df6155255ae64ebef43a8bc (diff)
btrfs: Allow to specify compress method when defrag
Update defrag ioctl, so one can choose lzo or zlib when turning on compression in defrag operation. Changelog: v1 -> v2 - Add incompability flag. - Fix to check invalid compress type. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Diffstat (limited to 'fs/btrfs/ioctl.h')
-rw-r--r--fs/btrfs/ioctl.h9
1 files changed, 8 insertions, 1 deletions
diff --git a/fs/btrfs/ioctl.h b/fs/btrfs/ioctl.h
index c344d12c646b..24d0f4628240 100644
--- a/fs/btrfs/ioctl.h
+++ b/fs/btrfs/ioctl.h
@@ -133,8 +133,15 @@ struct btrfs_ioctl_defrag_range_args {
*/
__u32 extent_thresh;
+ /*
+ * which compression method to use if turning on compression
+ * for this defrag operation. If unspecified, zlib will
+ * be used
+ */
+ __u32 compress_type;
+
/* spare for later */
- __u32 unused[5];
+ __u32 unused[4];
};
struct btrfs_ioctl_space_info {