On 12.09.2018 01:06, Liu Bo wrote: > btrfs_search_slot() > if (level != 0) > setup_nodes_for_search() > balance_level() > > It is just impossible to have level=0 in balance_level. > > Signed-off-by: Liu Bo <bo.liu@xxxxxxxxxxxxxxxxx> I concur with the analysis: Reviewed-by: Nikolay Borisov <nborisov@xxxxxxxx> > --- > fs/btrfs/ctree.c | 3 --- > 1 file changed, 3 deletions(-) > > diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c > index 8b31caa60b0a..858085490e23 100644 > --- a/fs/btrfs/ctree.c > +++ b/fs/btrfs/ctree.c > @@ -1778,9 +1778,6 @@ static noinline int balance_level(struct btrfs_trans_handle *trans, > int orig_slot = path->slots[level]; > u64 orig_ptr; > > - if (level == 0) > - return 0; > - > mid = path->nodes[level]; > > WARN_ON(path->locks[level] != BTRFS_WRITE_LOCK && >
