btrfs: remove BUG_ON from __tree_mod_log_insert

All callers dereference the 'tm' parameter before it gets to this
function, the NULL check does not make much sense here.

Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 0 insertions, 2 deletions

diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 1192bc7d2ee7..2c3c943bfcdc 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -453,8 +453,6 @@ __tree_mod_log_insert(struct btrfs_fs_info *fs_info, struct tree_mod_elem *tm)
         struct rb_node *parent = NULL;
         struct tree_mod_elem *cur;
 
-        BUG_ON(!tm);
-
         tm->seq = btrfs_inc_tree_mod_seq(fs_info);
 
         tm_root = &fs_info->tree_mod_log;