ocfs2: clean up dead code in alloc.c

Some stack variables are no longer used but still assigned.  Trim them.

Link: http://lkml.kernel.org/r/1516105069-12643-1-git-send-email-ge.changwei@h3c.comSigned-off-by: NChangwei Ge <ge.changwei@h3c.com>
Reviewed-by: NJun Piao <piaojun@huawei.com>
Reviewed-by: NAlex Chen <alex.chen@huawei.com>
Cc: Mark Fasheh <mfasheh@versity.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Joseph Qi <jiangqi903@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

fs/ocfs2/alloc.c

@@ -2598,11 +2598,8 @@ static void ocfs2_unlink_subtree(handle_t *handle,
 	int i;
 	struct buffer_head *root_bh = left_path->p_node[subtree_index].bh;
 	struct ocfs2_extent_list *root_el = left_path->p_node[subtree_index].el;
-	struct ocfs2_extent_list *el;
 	struct ocfs2_extent_block *eb;
 
-	el = path_leaf_el(left_path);
-
 	eb = (struct ocfs2_extent_block *)right_path->p_node[subtree_index + 1].bh->b_data;
 
 	for(i = 1; i < le16_to_cpu(root_el->l_next_free_rec); i++)
@@ -3938,7 +3935,7 @@ static void ocfs2_adjust_rightmost_records(handle_t *handle,
 					   struct ocfs2_path *path,
 					   struct ocfs2_extent_rec *insert_rec)
 {
-	int ret, i, next_free;
+	int i, next_free;
 	struct buffer_head *bh;
 	struct ocfs2_extent_list *el;
 	struct ocfs2_extent_rec *rec;
@@ -3955,7 +3952,6 @@ static void ocfs2_adjust_rightmost_records(handle_t *handle,
 			ocfs2_error(ocfs2_metadata_cache_get_super(et->et_ci),
 				    "Owner %llu has a bad extent list\n",
 				    (unsigned long long)ocfs2_metadata_cache_owner(et->et_ci));
-			ret = -EIO;
 			return;
 		}
 
@@ -5057,7 +5053,6 @@ int ocfs2_split_extent(handle_t *handle,
 	struct buffer_head *last_eb_bh = NULL;
 	struct ocfs2_extent_rec *rec = &el->l_recs[split_index];
 	struct ocfs2_merge_ctxt ctxt;
-	struct ocfs2_extent_list *rightmost_el;
 
 	if (le32_to_cpu(rec->e_cpos) > le32_to_cpu(split_rec->e_cpos) ||
 	    ((le32_to_cpu(rec->e_cpos) + le16_to_cpu(rec->e_leaf_clusters)) <
@@ -5093,9 +5088,7 @@ int ocfs2_split_extent(handle_t *handle,
 		}
 
 		eb = (struct ocfs2_extent_block *) last_eb_bh->b_data;
-		rightmost_el = &eb->h_list;
-	} else
-		rightmost_el = path_root_el(path);
+	}
 
 	if (rec->e_cpos == split_rec->e_cpos &&
 	    rec->e_leaf_clusters == split_rec->e_leaf_clusters)