Commit 88234012 authored by Josef Bacik's avatar Josef Bacik Committed by David Sterba
Browse files

btrfs: hold a ref on the root in btrfs_search_path_in_tree 



We look up an arbitrary fs root, we need to hold a ref on it while we're
doing our search.

Signed-off-by: default avatarJosef Bacik <josef@toxicpanda.com>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 3ca35e83

fs/btrfs/ioctl.c

+7 −0
Original line number Diff line number Diff line
@@ -2328,6 +2328,12 @@ static noinline int btrfs_search_path_in_tree(struct btrfs_fs_info *info, 
	root = btrfs_get_fs_root(info, &key, true);

	if (IS_ERR(root)) {

		ret = PTR_ERR(root);

		root = NULL;

		goto out;

	}

	if (!btrfs_grab_fs_root(root)) {

		ret = -ENOENT;

		root = NULL;

		goto out;

	}
@@ -2378,6 +2384,7 @@ static noinline int btrfs_search_path_in_tree(struct btrfs_fs_info *info, 
	name[total_len] = '\0';

	ret = 0;

out:

	btrfs_put_fs_root(root);

	btrfs_free_path(path);

	return ret;

}