bcachefs: bch2_trans_reset_updates()

Factor out a new helper.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>

fs/bcachefs/btree_iter.c

@@ -3186,20 +3186,12 @@ void *bch2_trans_kmalloc(struct btree_trans *trans, size_t size)
  */
 void bch2_trans_begin(struct btree_trans *trans)
 {
-	struct btree_insert_entry *i;
 	struct btree_path *path;
 
-	trans_for_each_update(trans, i)
-		__btree_path_put(i->path, true);
+	bch2_trans_reset_updates(trans);
 
-	memset(&trans->journal_res, 0, sizeof(trans->journal_res));
-	trans->extra_journal_res	= 0;
-	trans->nr_updates		= 0;
 	trans->mem_top			= 0;
 
-	trans->hooks			= NULL;
-	trans->extra_journal_entries.nr	= 0;
-
 	if (trans->fs_usage_deltas) {
 		trans->fs_usage_deltas->used = 0;
 		memset((void *) trans->fs_usage_deltas +

fs/bcachefs/btree_update.h

@@ -140,4 +140,17 @@ static inline int bch2_trans_commit(struct btree_trans *trans,
 	     (_i) < (_trans)->updates + (_trans)->nr_updates;		\
 	     (_i)++)
 
+static inline void bch2_trans_reset_updates(struct btree_trans *trans)
+{
+	struct btree_insert_entry *i;
+
+	trans_for_each_update(trans, i)
+		bch2_path_put(trans, i->path, true);
+
+	trans->extra_journal_res	= 0;
+	trans->nr_updates		= 0;
+	trans->hooks			= NULL;
+	trans->extra_journal_entries.nr	= 0;
+}
+
 #endif /* _BCACHEFS_BTREE_UPDATE_H */

fs/bcachefs/btree_update_leaf.c

@@ -1177,13 +1177,7 @@ int __bch2_trans_commit(struct btree_trans *trans)
 	if (likely(!(trans->flags & BTREE_INSERT_NOCHECK_RW)))
 		percpu_ref_put(&c->writes);
 out_reset:
-	trans_for_each_update(trans, i)
-		bch2_path_put(trans, i->path, true);
-
-	trans->extra_journal_res	= 0;
-	trans->nr_updates		= 0;
-	trans->hooks			= NULL;
-	trans->extra_journal_entries.nr	= 0;
+	bch2_trans_reset_updates(trans);
 
 	if (trans->fs_usage_deltas) {
 		trans->fs_usage_deltas->used = 0;