diff options
| author | Johannes Thumshirn <johannes.thumshirn@wdc.com> | 2020-07-13 21:28:59 +0900 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2020-07-27 12:55:43 +0200 |
| commit | 0fb408a558aadbaa58beb75b02c95741e1fbb514 (patch) | |
| tree | 5b7905db872ade1c18b74170d69c22fe155ac7a6 /include/uapi | |
| parent | 137c541821a83debb63b3fa8abdd1cbc41bdf3a1 (diff) | |
btrfs: add filesystem generation to FS_INFO ioctl
Add retrieval of the filesystem's generation to the fsinfo ioctl. This is
driven by setting the BTRFS_FS_INFO_FLAG_GENERATION flag in
btrfs_ioctl_fs_info_args::flags.
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/btrfs.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/uapi/linux/btrfs.h b/include/uapi/linux/btrfs.h index 24f6848ad78e..9b82e01c191d 100644 --- a/include/uapi/linux/btrfs.h +++ b/include/uapi/linux/btrfs.h @@ -250,6 +250,9 @@ struct btrfs_ioctl_dev_info_args { /* Request information about checksum type and size */ #define BTRFS_FS_INFO_FLAG_CSUM_INFO (1 << 0) +/* Request information about filesystem generation */ +#define BTRFS_FS_INFO_FLAG_GENERATION (1 << 1) + struct btrfs_ioctl_fs_info_args { __u64 max_id; /* out */ __u64 num_devices; /* out */ @@ -261,7 +264,8 @@ struct btrfs_ioctl_fs_info_args { __u16 csum_type; /* out */ __u16 csum_size; /* out */ __u64 flags; /* in/out */ - __u8 reserved[968]; /* pad to 1k */ + __u64 generation; /* out */ + __u8 reserved[960]; /* pad to 1k */ }; /* |