xfs: drop unnecessary xfs_defer_finish() dfops parameter

Every caller of xfs_defer_finish() now passes the transaction and
its associated ->t_dfops. The xfs_defer_ops parameter is therefore
no longer necessary and can be removed.

Since most xfs_defer_finish() callers also have to consider
xfs_defer_cancel() on error, update the latter to also receive the
transaction for consistency. The log recovery code contains an
outlier case that cancels a dfops directly without an available
transaction. Retain an internal wrapper to support this outlier case
for the time being.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Bill O'Donnell <billodo@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>

4 files changed, 22 insertions, 24 deletions

diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c
index 3e98f0af389c..3deb5cdadf08 100644
--- a/fs/xfs/libxfs/xfs_attr.c
+++ b/fs/xfs/libxfs/xfs_attr.c
@@ -322,7 +322,7 @@ xfs_attr_set(
 		xfs_trans_bhold(args.trans, leaf_bp);
 		xfs_defer_bjoin(args.trans->t_dfops, leaf_bp);
 		xfs_defer_ijoin(args.trans->t_dfops, dp);
-		error = xfs_defer_finish(&args.trans, args.trans->t_dfops);
+		error = xfs_defer_finish(&args.trans);
 		if (error)
 			goto out;
 
@@ -591,7 +591,7 @@ xfs_attr_leaf_addname(
 		if (error)
 			goto out_defer_cancel;
 		xfs_defer_ijoin(args->trans->t_dfops, dp);
-		error = xfs_defer_finish(&args->trans, args->trans->t_dfops);
+		error = xfs_defer_finish(&args->trans);
 		if (error)
 			goto out_defer_cancel;
 
@@ -680,7 +680,7 @@ xfs_attr_leaf_addname(
 			if (error)
 				goto out_defer_cancel;
 			xfs_defer_ijoin(args->trans->t_dfops, dp);
-			error = xfs_defer_finish(&args->trans, args->trans->t_dfops);
+			error = xfs_defer_finish(&args->trans);
 			if (error)
 				goto out_defer_cancel;
 		}
@@ -698,7 +698,7 @@ xfs_attr_leaf_addname(
 	}
 	return error;
 out_defer_cancel:
-	xfs_defer_cancel(args->trans->t_dfops);
+	xfs_defer_cancel(args->trans);
 	return error;
 }
 
@@ -744,13 +744,13 @@ xfs_attr_leaf_removename(
 		if (error)
 			goto out_defer_cancel;
 		xfs_defer_ijoin(args->trans->t_dfops, dp);
-		error = xfs_defer_finish(&args->trans, args->trans->t_dfops);
+		error = xfs_defer_finish(&args->trans);
 		if (error)
 			goto out_defer_cancel;
 	}
 	return 0;
 out_defer_cancel:
-	xfs_defer_cancel(args->trans->t_dfops);
+	xfs_defer_cancel(args->trans);
 	return error;
 }
 
@@ -871,8 +871,7 @@ restart:
 			if (error)
 				goto out_defer_cancel;
 			xfs_defer_ijoin(args->trans->t_dfops, dp);
-			error = xfs_defer_finish(&args->trans,
-						 args->trans->t_dfops);
+			error = xfs_defer_finish(&args->trans);
 			if (error)
 				goto out_defer_cancel;
 
@@ -897,7 +896,7 @@ restart:
 		if (error)
 			goto out_defer_cancel;
 		xfs_defer_ijoin(args->trans->t_dfops, dp);
-		error = xfs_defer_finish(&args->trans, args->trans->t_dfops);
+		error = xfs_defer_finish(&args->trans);
 		if (error)
 			goto out_defer_cancel;
 	} else {
@@ -994,7 +993,7 @@ restart:
 			if (error)
 				goto out_defer_cancel;
 			xfs_defer_ijoin(args->trans->t_dfops, dp);
-			error = xfs_defer_finish(&args->trans, args->trans->t_dfops);
+			error = xfs_defer_finish(&args->trans);
 			if (error)
 				goto out_defer_cancel;
 		}
@@ -1023,7 +1022,7 @@ out:
 		return error;
 	return retval;
 out_defer_cancel:
-	xfs_defer_cancel(args->trans->t_dfops);
+	xfs_defer_cancel(args->trans);
 	goto out;
 }
 
@@ -1118,7 +1117,7 @@ xfs_attr_node_removename(
 		if (error)
 			goto out_defer_cancel;
 		xfs_defer_ijoin(args->trans->t_dfops, dp);
-		error = xfs_defer_finish(&args->trans, args->trans->t_dfops);
+		error = xfs_defer_finish(&args->trans);
 		if (error)
 			goto out_defer_cancel;
 		/*
@@ -1150,7 +1149,7 @@ xfs_attr_node_removename(
 			if (error)
 				goto out_defer_cancel;
 			xfs_defer_ijoin(args->trans->t_dfops, dp);
-			error = xfs_defer_finish(&args->trans, args->trans->t_dfops);
+			error = xfs_defer_finish(&args->trans);
 			if (error)
 				goto out_defer_cancel;
 		} else
@@ -1162,7 +1161,7 @@ out:
 	xfs_da_state_free(state);
 	return error;
 out_defer_cancel:
-	xfs_defer_cancel(args->trans->t_dfops);
+	xfs_defer_cancel(args->trans);
 	goto out;
 }
 
diff --git a/fs/xfs/libxfs/xfs_attr_remote.c b/fs/xfs/libxfs/xfs_attr_remote.c
index 0fbfb740949e..77ca38586913 100644
--- a/fs/xfs/libxfs/xfs_attr_remote.c
+++ b/fs/xfs/libxfs/xfs_attr_remote.c
@@ -487,7 +487,7 @@ xfs_attr_rmtval_set(
 		if (error)
 			goto out_defer_cancel;
 		xfs_defer_ijoin(args->trans->t_dfops, dp);
-		error = xfs_defer_finish(&args->trans, args->trans->t_dfops);
+		error = xfs_defer_finish(&args->trans);
 		if (error)
 			goto out_defer_cancel;
 
@@ -555,7 +555,7 @@ xfs_attr_rmtval_set(
 	ASSERT(valuelen == 0);
 	return 0;
 out_defer_cancel:
-	xfs_defer_cancel(args->trans->t_dfops);
+	xfs_defer_cancel(args->trans);
 	return error;
 }
 
@@ -628,7 +628,7 @@ xfs_attr_rmtval_remove(
 		if (error)
 			goto out_defer_cancel;
 		xfs_defer_ijoin(args->trans->t_dfops, args->dp);
-		error = xfs_defer_finish(&args->trans, args->trans->t_dfops);
+		error = xfs_defer_finish(&args->trans);
 		if (error)
 			goto out_defer_cancel;
 
@@ -641,6 +641,6 @@ xfs_attr_rmtval_remove(
 	}
 	return 0;
 out_defer_cancel:
-	xfs_defer_cancel(args->trans->t_dfops);
+	xfs_defer_cancel(args->trans);
 	return error;
 }
diff --git a/fs/xfs/libxfs/xfs_defer.c b/fs/xfs/libxfs/xfs_defer.c
index b63cc9e730da..cbee0a86c978 100644
--- a/fs/xfs/libxfs/xfs_defer.c
+++ b/fs/xfs/libxfs/xfs_defer.c
@@ -342,9 +342,9 @@ xfs_defer_reset(
  */
 int
 xfs_defer_finish(
-	struct xfs_trans		**tp,
-	struct xfs_defer_ops		*dop)
+	struct xfs_trans		**tp)
 {
+	struct xfs_defer_ops		*dop = (*tp)->t_dfops;
 	struct xfs_defer_pending	*dfp;
 	struct list_head		*li;
 	struct list_head		*n;
@@ -353,7 +353,6 @@ xfs_defer_finish(
 	void				(*cleanup_fn)(struct xfs_trans *, void *, int);
 
 	ASSERT((*tp)->t_flags & XFS_TRANS_PERM_LOG_RES);
-	ASSERT((*tp)->t_dfops == dop);
 
 	trace_xfs_defer_finish((*tp)->t_mountp, dop, _RET_IP_);
 
@@ -454,7 +453,7 @@ out:
  * Free up any items left in the list.
  */
 void
-xfs_defer_cancel(
+__xfs_defer_cancel(
 	struct xfs_defer_ops		*dop)
 {
 	struct xfs_defer_pending	*dfp;
diff --git a/fs/xfs/libxfs/xfs_defer.h b/fs/xfs/libxfs/xfs_defer.h
index 35507ca9a148..56f927803940 100644
--- a/fs/xfs/libxfs/xfs_defer.h
+++ b/fs/xfs/libxfs/xfs_defer.h
@@ -48,8 +48,8 @@ enum xfs_defer_ops_type {
 
 void xfs_defer_add(struct xfs_defer_ops *dop, enum xfs_defer_ops_type type,
 		struct list_head *h);
-int xfs_defer_finish(struct xfs_trans **tp, struct xfs_defer_ops *dop);
-void xfs_defer_cancel(struct xfs_defer_ops *dop);
+int xfs_defer_finish(struct xfs_trans **tp);
+void __xfs_defer_cancel(struct xfs_defer_ops *dop);
 void xfs_defer_init(struct xfs_trans *tp, struct xfs_defer_ops *dop);
 bool xfs_defer_has_unfinished_work(struct xfs_defer_ops *dop);
 int xfs_defer_ijoin(struct xfs_defer_ops *dop, struct xfs_inode *ip);