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authorChris Mason <chris.mason@oracle.com>2007-08-27 16:49:44 -0400
committerDavid Woodhouse <dwmw2@hera.kernel.org>2007-08-27 16:49:44 -0400
commit83df7c1d8b885e216c68c3f0469bec9b93666b74 (patch)
treead8b3373c86c36f9c690def7f71724401ffb41fe
parent2cc58cf24f69be8632a3b29d653c318bf3bd8c84 (diff)
Btrfs: Make sure to cow the root during a snapshot
Signed-off-by: Chris Mason <chris.mason@oracle.com>
-rw-r--r--fs/btrfs/inode.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 7e4cf62ada5..504d37dfa6c 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -2096,6 +2096,7 @@ static int create_snapshot(struct btrfs_root *root, char *name, int namelen)
struct btrfs_trans_handle *trans;
struct btrfs_key key;
struct btrfs_root_item new_root_item;
+ struct buffer_head *tmp;
int ret;
int err;
u64 objectid;
@@ -2123,6 +2124,7 @@ static int create_snapshot(struct btrfs_root *root, char *name, int namelen)
key.offset = 1;
key.flags = 0;
btrfs_set_key_type(&key, BTRFS_ROOT_ITEM_KEY);
+ btrfs_cow_block(trans, root, root->node, NULL, 0, &tmp);
btrfs_set_root_blocknr(&new_root_item, bh_blocknr(root->node));
ret = btrfs_insert_root(trans, root->fs_info->tree_root, &key,