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| author | Yan <yanzheng@21cn.com> | 2007-12-04 13:20:20 -0500 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2008-09-25 11:03:58 -0400 |
| commit | 9691975dd663b255fa52404dc7de4b18892bf244 (patch) | |
| tree | f0a413e147596191f2508767736923e15664760b /fs/btrfs | |
| parent | 1a2b2ac78a4151a49267a1e3f48a131f5810814e (diff) | |
| download | linux-9691975dd663b255fa52404dc7de4b18892bf244.tar.bz2 | |
Btrfs: Fix buffer get/release issue in create_snapshot
btrfs_cow_block expects a reference to be held on the buffer being cow'd.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs')
| -rw-r--r-- | fs/btrfs/inode.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 37f8e0321af8..d0af0807d9f8 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -2034,11 +2034,11 @@ static int create_snapshot(struct btrfs_root *root, char *name, int namelen) key.objectid = objectid; key.offset = 1; btrfs_set_key_type(&key, BTRFS_ROOT_ITEM_KEY); - + extent_buffer_get(root->node); btrfs_cow_block(trans, root, root->node, NULL, 0, &tmp); + free_extent_buffer(tmp); btrfs_set_root_bytenr(&new_root_item, root->node->start); btrfs_set_root_level(&new_root_item, btrfs_header_level(root->node)); - ret = btrfs_insert_root(trans, root->fs_info->tree_root, &key, &new_root_item); if (ret) |