author: Filipe Manana <fdmanana@suse.com> 2023-06-08 11:27:40 +0100
committer: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2023-07-19 16:36:57 +0200
commit: 82270e7f284fd23914d7b6b71ec2873e385e4c4a
parent: 796eb12aa5e4bc3bd217e6fff0d37f7bf6f6a8ea
Commit Summary:
Diffstat:
1 file changed, 7 insertions, 2 deletions
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 05717580dfbf..4912d624ca3d 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -583,9 +583,14 @@ static noinline int __btrfs_cow_block(struct btrfs_trans_handle *trans,
btrfs_header_backref_rev(buf) < BTRFS_MIXED_BACKREF_REV)
parent_start = buf->start;
- atomic_inc(&cow->refs);
ret = btrfs_tree_mod_log_insert_root(root->node, cow, true);
- BUG_ON(ret < 0);
+ if (ret < 0) {
+ btrfs_tree_unlock(cow);
+ free_extent_buffer(cow);
+ btrfs_abort_transaction(trans, ret);
+ return ret;
+ }
+ atomic_inc(&cow->refs);
rcu_assign_pointer(root->node, cow);
btrfs_free_tree_block(trans, btrfs_root_id(root), buf,