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| author | Chris Mason <chris.mason@oracle.com> | 2008-09-05 16:13:11 -0400 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2008-09-25 11:04:07 -0400 |
| commit | e02119d5a7b4396c5a872582fddc8bd6d305a70a (patch) | |
| tree | 825efe2a79dbca8d61256183f3526a5b5dc40dc6 /fs/btrfs/root-tree.c | |
| parent | a1b32a5932cfac7c38b442582285f3da2a09dfd8 (diff) | |
| download | op-kernel-dev-e02119d5a7b4396c5a872582fddc8bd6d305a70a.zip op-kernel-dev-e02119d5a7b4396c5a872582fddc8bd6d305a70a.tar.gz | |
Btrfs: Add a write ahead tree log to optimize synchronous operations
File syncs and directory syncs are optimized by copying their
items into a special (copy-on-write) log tree. There is one log tree per
subvolume and the btrfs super block points to a tree of log tree roots.
After a crash, items are copied out of the log tree and back into the
subvolume. See tree-log.c for all the details.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/root-tree.c')
| -rw-r--r-- | fs/btrfs/root-tree.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/btrfs/root-tree.c b/fs/btrfs/root-tree.c index 3672669..e3984f9 100644 --- a/fs/btrfs/root-tree.c +++ b/fs/btrfs/root-tree.c @@ -202,8 +202,9 @@ again: memcpy(&found_key, &key, sizeof(key)); key.offset++; btrfs_release_path(root, path); - dead_root = btrfs_read_fs_root_no_radix(root->fs_info, - &found_key); + dead_root = + btrfs_read_fs_root_no_radix(root->fs_info->tree_root, + &found_key); if (IS_ERR(dead_root)) { ret = PTR_ERR(dead_root); goto err; |
