Restore the zfs_dirty_inode

Signed-off-by: Grady Wong <grady.w@xtaotech.com>

module/zfs/zfs_vnops.c

@@ -4654,24 +4654,13 @@ zfs_dirty_inode(struct inode *ip, int flags)
 	}
 #endif
 
-top:
 	tx = dmu_tx_create(zfsvfs->z_os);
+
 	dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE);
 	zfs_sa_upgrade_txholds(tx, zp);
 
-	/*
-	 * Despite this function allows an error to be returned, it's called
-	 * from zpl_dirty_inode() which is a Linux VFS callback functions
-	 * (.dirty_inode) which must always succeed, so we have to assign a
-	 * txg with TXG_NOTHROTTLE plus TX_WAIT.
-	 */
-	error = dmu_tx_assign(tx, TXG_NOTHROTTLE | TXG_WAIT);
+	error = dmu_tx_assign(tx, TXG_WAIT);
 	if (error) {
-		if (error == ERESTART) {
-			dmu_tx_wait(tx);
-			dmu_tx_abort(tx);
-			goto top;
-		}
 		dmu_tx_abort(tx);
 		goto out;
 	}