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| author | Ilya Dryomov <idryomov@gmail.com> | 2012-01-16 22:04:47 +0200 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2012-01-16 22:04:47 +0200 |
| commit | c9e9f97bdfb64d06e9520f8e4f37674ac21cc9bc (patch) | |
| tree | 22d695a7a461068c773b327e5c89a045ade5d8a3 /fs/btrfs/ctree.h | |
| parent | 10ea00f55a07f8f9536d9112b95108a86f700bab (diff) | |
| download | lwn-c9e9f97bdfb64d06e9520f8e4f37674ac21cc9bc.tar.gz lwn-c9e9f97bdfb64d06e9520f8e4f37674ac21cc9bc.zip | |
Btrfs: add basic restriper infrastructure
Add basic restriper infrastructure: extended balancing ioctl and all
related ioctl data structures, add data structure for tracking
restriper's state to fs_info, etc. The semantics of the old balancing
ioctl are fully preserved.
Explicitly disallow any volume operations when balance is in progress.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/btrfs/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 3f8f11e18b53..c4d98c8df5c5 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -934,6 +934,7 @@ struct btrfs_block_group_cache { struct reloc_control; struct btrfs_device; struct btrfs_fs_devices; +struct btrfs_balance_control; struct btrfs_delayed_root; struct btrfs_fs_info { u8 fsid[BTRFS_FSID_SIZE]; @@ -1159,6 +1160,11 @@ struct btrfs_fs_info { u64 avail_metadata_alloc_bits; u64 avail_system_alloc_bits; + /* restriper state */ + spinlock_t balance_lock; + struct mutex balance_mutex; + struct btrfs_balance_control *balance_ctl; + unsigned data_chunk_allocations; unsigned metadata_ratio; |