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btrfs: Allow to specify compress method when defrag

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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>
This commit is contained in:
Li Zefan
2010-10-25 15:12:50 +08:00
parent a6fa6fae40
commit 1a419d85a7
2 changed files with 26 additions and 2 deletions
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9
fs/btrfs/ioctl.h
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@ -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 {