X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Ftarget%2Fout_lib.c;h=1b89ff6553f2f55c6fb72e1ddf34b2af2cb966a7;hp=8ba1fd67f5833f9fe7fba06a2fece93a99a7f8bf;hb=713174908cb8e5e3ceadd3ca1cb42a88b200e576;hpb=51f5621c04b363dcde7e1bb3dcdb2ebd3b2919fd

diff --git a/lustre/target/out_lib.c b/lustre/target/out_lib.c
index 8ba1fd6..1b89ff6 100644
--- a/lustre/target/out_lib.c
+++ b/lustre/target/out_lib.c
@@ -20,7 +20,7 @@
  * GPL HEADER END
  */
 /*
- * Copyright (c) 2013, Intel Corporation.
+ * Copyright (c) 2014, 2015, Intel Corporation.
  */
 /*
  * lustre/target/out_lib.c
@@ -32,218 +32,1192 @@
 #define DEBUG_SUBSYSTEM S_CLASS
 
 #include <lu_target.h>
+#include <lustre_obdo.h>
 #include <lustre_update.h>
+#include <md_object.h>
 #include <obd.h>
+#include <obd_class.h>
 
-struct update_request *out_find_update(struct thandle_update *tu,
-				       struct dt_device *dt_dev)
+#include "tgt_internal.h"
+
+const char *update_op_str(__u16 opc)
+{
+	static const char *opc_str[] = {
+		[OUT_START] = "start",
+		[OUT_CREATE] = "create",
+		[OUT_DESTROY] = "destroy",
+		[OUT_REF_ADD] = "ref_add",
+		[OUT_REF_DEL] = "ref_del" ,
+		[OUT_ATTR_SET] = "attr_set",
+		[OUT_ATTR_GET] = "attr_get",
+		[OUT_XATTR_SET] = "xattr_set",
+		[OUT_XATTR_GET] = "xattr_get",
+		[OUT_INDEX_LOOKUP] = "lookup",
+		[OUT_INDEX_INSERT] = "insert",
+		[OUT_INDEX_DELETE] = "delete",
+		[OUT_WRITE] = "write",
+		[OUT_XATTR_DEL] = "xattr_del",
+		[OUT_PUNCH] = "punch",
+		[OUT_READ] = "read",
+		[OUT_NOOP] = "noop",
+	};
+
+	if (opc < ARRAY_SIZE(opc_str) && opc_str[opc] != NULL)
+		return opc_str[opc];
+	else
+		return "unknown";
+}
+EXPORT_SYMBOL(update_op_str);
+
+/**
+ * Fill object update header
+ *
+ * Only fill the object update header, and parameters will be filled later
+ * in other functions.
+ *
+ * \params[in] env		execution environment
+ * \params[in] update		object update to be filled
+ * \params[in,out] max_update_size	maximum object update size, if the
+ *                                      current update length equals or
+ *                                      exceeds the size, it will return -E2BIG.
+ * \params[in] update_op	update type
+ * \params[in] fid		object FID of the update
+ * \params[in] param_count	the count of the update parameters
+ * \params[in] param_sizes	the length of each parameters
+ *
+ * \retval			0 if packing succeeds.
+ * \retval			-E2BIG if packing exceeds the maximum length.
+ */
+int out_update_header_pack(const struct lu_env *env,
+			   struct object_update *update,
+			   size_t *max_update_size,
+			   enum update_type update_op,
+			   const struct lu_fid *fid,
+			   unsigned int param_count,
+			   __u16 *param_sizes,
+			   __u32 reply_size)
 {
-	struct update_request   *update;
+	struct object_update_param	*param;
+	unsigned int			i;
+	size_t				update_size;
 
-	LASSERT(tu != NULL);
-	list_for_each_entry(update, &tu->tu_remote_update_list, ur_list) {
-		if (update->ur_dt == dt_dev)
-			return update;
+	if (((reply_size + 7) >> 3) >= 1ULL << 16)
+		return -EINVAL;
+
+	/* Check whether the packing exceeding the maxima update length */
+	update_size = sizeof(*update);
+	for (i = 0; i < param_count; i++)
+		update_size += cfs_size_round(sizeof(*param) + param_sizes[i]);
+
+	if (unlikely(update_size >= *max_update_size)) {
+		*max_update_size = update_size;
+		return -E2BIG;
 	}
 
-	return NULL;
+	update->ou_fid = *fid;
+	update->ou_type = update_op;
+	update->ou_params_count = param_count;
+	update->ou_result_size = reply_size;
+	param = &update->ou_params[0];
+	for (i = 0; i < param_count; i++) {
+		param->oup_len = param_sizes[i];
+		param = (struct object_update_param *)((char *)param +
+			 object_update_param_size(param));
+	}
+
+	return 0;
 }
-EXPORT_SYMBOL(out_find_update);
 
-void out_destroy_update_req(struct update_request *update)
+/**
+ * Packs one update into the update_buffer.
+ *
+ * \param[in] env	execution environment
+ * \param[in] update	update to be packed
+ * \param[in] max_update_size	*maximum size of \a update
+ * \param[in] op	update operation (enum update_type)
+ * \param[in] fid	object FID for this update
+ * \param[in] param_count	number of parameters for this update
+ * \param[in] param_sizes	array of parameters length of this update
+ * \param[in] param_bufs	parameter buffers
+ *
+ * \retval		= 0 if updates packing succeeds
+ * \retval		negative errno if updates packing fails
+ **/
+int out_update_pack(const struct lu_env *env, struct object_update *update,
+		    size_t *max_update_size, enum update_type op,
+		    const struct lu_fid *fid, unsigned int param_count,
+		    __u16 *param_sizes, const void **param_bufs,
+		    __u32 reply_size)
 {
-	if (update == NULL)
-		return;
+	struct object_update_param	*param;
+	unsigned int			i;
+	int				rc;
+	ENTRY;
 
-	LASSERT(list_empty(&update->ur_cb_items));
+	rc = out_update_header_pack(env, update, max_update_size, op, fid,
+				    param_count, param_sizes, reply_size);
+	if (rc != 0)
+		RETURN(rc);
 
-	list_del(&update->ur_list);
-	if (update->ur_buf != NULL)
-		OBD_FREE_LARGE(update->ur_buf, UPDATE_BUFFER_SIZE);
+	param = &update->ou_params[0];
+	for (i = 0; i < param_count; i++) {
+		memcpy(&param->oup_buf[0], param_bufs[i], param_sizes[i]);
+		param = (struct object_update_param *)((char *)param +
+			 object_update_param_size(param));
+	}
 
-	OBD_FREE_PTR(update);
+	RETURN(0);
 }
-EXPORT_SYMBOL(out_destroy_update_req);
+EXPORT_SYMBOL(out_update_pack);
 
-struct update_request *out_create_update_req(struct dt_device *dt)
+/**
+ * Pack various updates into the update_buffer.
+ *
+ * The following functions pack different updates into the update_buffer
+ * So parameters of these API is basically same as its correspondent OSD/OSP
+ * API, for detail description of these parameters see osd_handler.c or
+ * osp_md_object.c.
+ *
+ * \param[in] env	execution environment
+ * \param[in] ubuf	update buffer
+ * \param[in] fid	fid of this object for the update
+ *
+ * \retval		0 if insertion succeeds.
+ * \retval		negative errno if insertion fails.
+ */
+int out_create_pack(const struct lu_env *env, struct object_update *update,
+		    size_t *max_update_size, const struct lu_fid *fid,
+		    const struct lu_attr *attr, struct dt_allocation_hint *hint,
+		    struct dt_object_format *dof)
 {
-	struct update_request *update;
+	struct obdo		*obdo;
+	__u16			sizes[2] = {sizeof(*obdo), 0};
+	int			buf_count = 1;
+	const struct lu_fid	*parent_fid = NULL;
+	int			rc;
+	ENTRY;
+
+	if (hint != NULL && hint->dah_parent) {
+		parent_fid = lu_object_fid(&hint->dah_parent->do_lu);
+		sizes[1] = sizeof(*parent_fid);
+		buf_count++;
+	}
+
+	rc = out_update_header_pack(env, update, max_update_size, OUT_CREATE,
+				    fid, buf_count, sizes, 0);
+	if (rc != 0)
+		RETURN(rc);
+
+	obdo = object_update_param_get(update, 0, NULL);
+	if (IS_ERR(obdo))
+		RETURN(PTR_ERR(obdo));
 
-	OBD_ALLOC_PTR(update);
-	if (update == NULL)
-		return ERR_PTR(-ENOMEM);
+	obdo->o_valid = 0;
+	obdo_from_la(obdo, attr, attr->la_valid);
+	lustre_set_wire_obdo(NULL, obdo, obdo);
 
-	OBD_ALLOC_LARGE(update->ur_buf, UPDATE_BUFFER_SIZE);
-	if (update->ur_buf == NULL) {
-		OBD_FREE_PTR(update);
+	if (parent_fid != NULL) {
+		struct lu_fid *tmp;
 
-		return ERR_PTR(-ENOMEM);
+		tmp = object_update_param_get(update, 1, NULL);
+		if (IS_ERR(tmp))
+			RETURN(PTR_ERR(tmp));
+
+		fid_cpu_to_le(tmp, parent_fid);
 	}
 
-	INIT_LIST_HEAD(&update->ur_list);
-	update->ur_dt = dt;
-	update->ur_buf->ub_magic = UPDATE_BUFFER_MAGIC;
-	update->ur_buf->ub_count = 0;
-	INIT_LIST_HEAD(&update->ur_cb_items);
+	RETURN(0);
+}
+EXPORT_SYMBOL(out_create_pack);
 
-	return update;
+int out_ref_del_pack(const struct lu_env *env, struct object_update *update,
+		     size_t *max_update_size, const struct lu_fid *fid)
+{
+	return out_update_pack(env, update, max_update_size, OUT_REF_DEL, fid,
+			       0, NULL, NULL, 0);
 }
-EXPORT_SYMBOL(out_create_update_req);
+EXPORT_SYMBOL(out_ref_del_pack);
 
-/**
- * Find or create one loc in th_dev/dev_obj_update for the update,
- * Because only one thread can access this thandle, no need
- * lock now.
- */
-struct update_request *out_find_create_update_loc(struct thandle *th,
-						  struct dt_object *dt)
+int out_ref_add_pack(const struct lu_env *env, struct object_update *update,
+		     size_t *max_update_size, const struct lu_fid *fid)
 {
-	struct dt_device	*dt_dev = lu2dt_dev(dt->do_lu.lo_dev);
-	struct thandle_update	*tu = th->th_update;
-	struct update_request	*update;
+	return out_update_pack(env, update, max_update_size, OUT_REF_ADD, fid,
+			       0, NULL, NULL, 0);
+}
+EXPORT_SYMBOL(out_ref_add_pack);
+
+int out_attr_set_pack(const struct lu_env *env, struct object_update *update,
+		      size_t *max_update_size, const struct lu_fid *fid,
+		      const struct lu_attr *attr)
+{
+	struct obdo		*obdo;
+	__u16			size = sizeof(*obdo);
+	int			rc;
 	ENTRY;
 
-	if (tu == NULL) {
-		OBD_ALLOC_PTR(tu);
-		if (tu == NULL)
-			RETURN(ERR_PTR(-ENOMEM));
+	rc = out_update_header_pack(env, update, max_update_size,
+				    OUT_ATTR_SET, fid, 1, &size, 0);
+	if (rc != 0)
+		RETURN(rc);
+
+	obdo = object_update_param_get(update, 0, NULL);
+	if (IS_ERR(obdo))
+		RETURN(PTR_ERR(obdo));
+
+	obdo->o_valid = 0;
+	obdo_from_la(obdo, attr, attr->la_valid);
+	lustre_set_wire_obdo(NULL, obdo, obdo);
+
+	RETURN(0);
+}
+EXPORT_SYMBOL(out_attr_set_pack);
+
+int out_xattr_set_pack(const struct lu_env *env, struct object_update *update,
+		       size_t *max_update_size, const struct lu_fid *fid,
+		       const struct lu_buf *buf, const char *name, __u32 flag)
+{
+	__u16	sizes[3] = {strlen(name) + 1, buf->lb_len, sizeof(flag)};
+	const void *bufs[3] = {(char *)name, (char *)buf->lb_buf,
+			       (char *)&flag};
+
+	return out_update_pack(env, update, max_update_size, OUT_XATTR_SET,
+			       fid, ARRAY_SIZE(sizes), sizes, bufs, 0);
+}
+EXPORT_SYMBOL(out_xattr_set_pack);
+
+int out_xattr_del_pack(const struct lu_env *env, struct object_update *update,
+		       size_t *max_update_size, const struct lu_fid *fid,
+		       const char *name)
+{
+	__u16	size = strlen(name) + 1;
+
+	return out_update_pack(env, update, max_update_size, OUT_XATTR_DEL,
+			       fid, 1, &size, (const void **)&name, 0);
+}
+EXPORT_SYMBOL(out_xattr_del_pack);
 
-		INIT_LIST_HEAD(&tu->tu_remote_update_list);
-		tu->tu_sent_after_local_trans = 0;
-		th->th_update = tu;
+int out_index_insert_pack(const struct lu_env *env,
+			  struct object_update *update,
+			  size_t *max_update_size, const struct lu_fid *fid,
+			  const struct dt_rec *rec, const struct dt_key *key)
+{
+	struct dt_insert_rec	   *rec1 = (struct dt_insert_rec *)rec;
+	struct lu_fid		   rec_fid;
+	__u32			    type = cpu_to_le32(rec1->rec_type);
+	__u16			    sizes[3] = { strlen((char *)key) + 1,
+						sizeof(rec_fid),
+						sizeof(type) };
+	const void		   *bufs[3] = { (char *)key,
+						(char *)&rec_fid,
+						(char *)&type };
+
+	fid_cpu_to_le(&rec_fid, rec1->rec_fid);
+
+	return out_update_pack(env, update, max_update_size, OUT_INDEX_INSERT,
+			       fid, ARRAY_SIZE(sizes), sizes, bufs, 0);
+}
+EXPORT_SYMBOL(out_index_insert_pack);
+
+int out_index_delete_pack(const struct lu_env *env,
+			  struct object_update *update,
+			  size_t *max_update_size, const struct lu_fid *fid,
+			  const struct dt_key *key)
+{
+	__u16	size = strlen((char *)key) + 1;
+	const void *buf = key;
+
+	return out_update_pack(env, update, max_update_size, OUT_INDEX_DELETE,
+			       fid, 1, &size, &buf, 0);
+}
+EXPORT_SYMBOL(out_index_delete_pack);
+
+int out_object_destroy_pack(const struct lu_env *env,
+			    struct object_update *update,
+			    size_t *max_update_size, const struct lu_fid *fid)
+{
+	return out_update_pack(env, update, max_update_size, OUT_DESTROY, fid,
+			       0, NULL, NULL, 0);
+}
+EXPORT_SYMBOL(out_object_destroy_pack);
+
+int out_write_pack(const struct lu_env *env, struct object_update *update,
+		   size_t *max_update_size, const struct lu_fid *fid,
+		   const struct lu_buf *buf, __u64 pos)
+{
+	__u16		sizes[2] = {buf->lb_len, sizeof(pos)};
+	const void	*bufs[2] = {(char *)buf->lb_buf, (char *)&pos};
+	int		rc;
+
+	pos = cpu_to_le64(pos);
+
+	rc = out_update_pack(env, update, max_update_size, OUT_WRITE, fid,
+			     ARRAY_SIZE(sizes), sizes, bufs, 0);
+	return rc;
+}
+EXPORT_SYMBOL(out_write_pack);
+
+/**
+ * Pack various readonly updates into the update_buffer.
+ *
+ * The following update funcs are only used by read-only ops, lookup,
+ * getattr etc, so it does not need transaction here. Currently they
+ * are only used by OSP.
+ *
+ * \param[in] env	execution environment
+ * \param[in] fid	fid of this object for the update
+ * \param[in] ubuf	update buffer
+ *
+ * \retval		= 0 pack succeed.
+ *                      < 0 pack failed.
+ **/
+int out_index_lookup_pack(const struct lu_env *env,
+			  struct object_update *update,
+			  size_t *max_update_size, const struct lu_fid *fid,
+			  struct dt_rec *rec, const struct dt_key *key)
+{
+	const void	*name = key;
+	__u16		size = strlen((char *)name) + 1;
+
+	/* XXX: this shouldn't be hardcoded */
+	return out_update_pack(env, update, max_update_size, OUT_INDEX_LOOKUP,
+			       fid, 1, &size, &name, 256);
+}
+EXPORT_SYMBOL(out_index_lookup_pack);
+
+int out_attr_get_pack(const struct lu_env *env, struct object_update *update,
+		      size_t *max_update_size, const struct lu_fid *fid)
+{
+	return out_update_pack(env, update, max_update_size, OUT_ATTR_GET,
+			       fid, 0, NULL, NULL, sizeof(struct obdo));
+}
+EXPORT_SYMBOL(out_attr_get_pack);
+
+int out_xattr_get_pack(const struct lu_env *env, struct object_update *update,
+		       size_t *max_update_size, const struct lu_fid *fid,
+		       const char *name, const int bufsize)
+{
+	__u16 size;
+
+	LASSERT(name != NULL);
+	size = strlen(name) + 1;
+
+	return out_update_pack(env, update, max_update_size, OUT_XATTR_GET,
+			       fid, 1, &size, (const void **)&name, bufsize);
+}
+EXPORT_SYMBOL(out_xattr_get_pack);
+
+int out_read_pack(const struct lu_env *env, struct object_update *update,
+		  size_t *max_update_size, const struct lu_fid *fid,
+		  size_t size, loff_t pos)
+{
+	__u16		sizes[2] = {sizeof(size), sizeof(pos)};
+	const void	*bufs[2] = {&size, &pos};
+
+	LASSERT(size > 0);
+	size = cpu_to_le64(size);
+	pos = cpu_to_le64(pos);
+
+	return out_update_pack(env, update, max_update_size, OUT_READ, fid,
+			       ARRAY_SIZE(sizes), sizes, bufs, size);
+}
+EXPORT_SYMBOL(out_read_pack);
+
+static int tx_extend_args(struct thandle_exec_args *ta, int new_alloc_ta)
+{
+	struct tx_arg	**new_ta;
+	int		i;
+	int		rc = 0;
+
+	if (ta->ta_alloc_args >= new_alloc_ta)
+		return 0;
+
+	OBD_ALLOC(new_ta, sizeof(*new_ta) * new_alloc_ta);
+	if (new_ta == NULL)
+		return -ENOMEM;
+
+	for (i = 0; i < new_alloc_ta; i++) {
+		if (i < ta->ta_alloc_args) {
+			/* copy the old args to new one */
+			new_ta[i] = ta->ta_args[i];
+		} else {
+			OBD_ALLOC_PTR(new_ta[i]);
+			if (new_ta[i] == NULL)
+				GOTO(out, rc = -ENOMEM);
+		}
+	}
+
+	/* free the old args */
+	if (ta->ta_args != NULL)
+		OBD_FREE(ta->ta_args, sizeof(ta->ta_args[0]) *
+				      ta->ta_alloc_args);
+
+	ta->ta_args = new_ta;
+	ta->ta_alloc_args = new_alloc_ta;
+out:
+	if (rc != 0) {
+		for (i = 0; i < new_alloc_ta; i++) {
+			if (new_ta[i] != NULL)
+				OBD_FREE_PTR(new_ta[i]);
+		}
+		OBD_FREE(new_ta, sizeof(*new_ta) * new_alloc_ta);
 	}
+	return rc;
+}
+
+#define TX_ALLOC_STEP	8
+struct tx_arg *tx_add_exec(struct thandle_exec_args *ta,
+			   tx_exec_func_t func, tx_exec_func_t undo,
+			   const char *file, int line)
+{
+	int rc;
+	int i;
+
+	LASSERT(ta != NULL);
+	LASSERT(func != NULL);
+
+	if (ta->ta_argno + 1 >= ta->ta_alloc_args) {
+		rc = tx_extend_args(ta, ta->ta_alloc_args + TX_ALLOC_STEP);
+		if (rc != 0)
+			return ERR_PTR(rc);
+	}
+
+	i = ta->ta_argno;
+
+	ta->ta_argno++;
+
+	ta->ta_args[i]->exec_fn = func;
+	ta->ta_args[i]->undo_fn = undo;
+	ta->ta_args[i]->file    = file;
+	ta->ta_args[i]->line    = line;
+
+	return ta->ta_args[i];
+}
+
+static int out_obj_destroy(const struct lu_env *env, struct dt_object *dt_obj,
+			   struct thandle *th)
+{
+	int rc;
 
-	update = out_find_update(tu, dt_dev);
-	if (update != NULL)
-		RETURN(update);
+	CDEBUG(D_INFO, "%s: destroy "DFID"\n", dt_obd_name(th->th_dev),
+	       PFID(lu_object_fid(&dt_obj->do_lu)));
 
-	update = out_create_update_req(dt_dev);
-	if (IS_ERR(update))
-		RETURN(update);
+	dt_write_lock(env, dt_obj, MOR_TGT_CHILD);
+	rc = dt_destroy(env, dt_obj, th);
+	dt_write_unlock(env, dt_obj);
 
-	list_add_tail(&update->ur_list, &tu->tu_remote_update_list);
+	return rc;
+}
 
-	if (!tu->tu_only_remote_trans)
-		thandle_get(th);
+/**
+ * All of the xxx_undo will be used once execution failed,
+ * But because all of the required resource has been reserved in
+ * declare phase, i.e. if declare succeed, it should make sure
+ * the following executing phase succeed in anyway, so these undo
+ * should be useless for most of the time in Phase I
+ */
+static int out_tx_create_undo(const struct lu_env *env, struct thandle *th,
+			      struct tx_arg *arg)
+{
+	int rc;
 
-	RETURN(update);
+	rc = out_obj_destroy(env, arg->object, th);
+	if (rc != 0)
+		CERROR("%s: undo failure, we are doomed!: rc = %d\n",
+		       dt_obd_name(th->th_dev), rc);
+	return rc;
 }
-EXPORT_SYMBOL(out_find_create_update_loc);
 
-int out_prep_update_req(const struct lu_env *env, struct obd_import *imp,
-			const struct update_buf *ubuf, int ubuf_len,
-			struct ptlrpc_request **reqp)
+int out_tx_create_exec(const struct lu_env *env, struct thandle *th,
+		       struct tx_arg *arg)
 {
-	struct ptlrpc_request  *req;
-	struct update_buf      *tmp;
+	struct dt_object	*dt_obj = arg->object;
+	int			 rc;
+
+	CDEBUG(D_OTHER, "%s: create "DFID": dof %u, mode %o\n",
+	       dt_obd_name(th->th_dev),
+	       PFID(lu_object_fid(&arg->object->do_lu)),
+	       arg->u.create.dof.dof_type,
+	       arg->u.create.attr.la_mode & S_IFMT);
+
+	dt_write_lock(env, dt_obj, MOR_TGT_CHILD);
+	rc = dt_create(env, dt_obj, &arg->u.create.attr,
+		       &arg->u.create.hint, &arg->u.create.dof, th);
+
+	dt_write_unlock(env, dt_obj);
+
+	CDEBUG(D_INFO, "%s: insert create reply %p index %d: rc = %d\n",
+	       dt_obd_name(th->th_dev), arg->reply, arg->index, rc);
+
+	if (arg->reply != NULL)
+		object_update_result_insert(arg->reply, NULL, 0, arg->index,
+					    rc);
+
+	return rc;
+}
+
+/**
+ * Add create update to thandle
+ *
+ * Declare create updates and add the update to the thandle updates
+ * exec array.
+ *
+ * \param [in] env	execution environment
+ * \param [in] obj	object to be created
+ * \param [in] attr	attributes of the creation
+ * \param [in] parent_fid the fid of the parent
+ * \param [in] dof	dt object format of the creation
+ * \param [in] ta	thandle execuation args where all of updates
+ *                      of the transaction are stored
+ * \param [in] th	thandle for this update
+ * \param [in] reply	reply of the updates
+ * \param [in] index	index of the reply
+ * \param [in] file	the file name where the function is called,
+ *                      which is only for debugging purpose.
+ * \param [in] line	the line number where the funtion is called,
+ *                      which is only for debugging purpose.
+ *
+ * \retval		0 if updates is added successfully.
+ * \retval		negative errno if update adding fails.
+ */
+int out_create_add_exec(const struct lu_env *env, struct dt_object *obj,
+			struct lu_attr *attr, struct lu_fid *parent_fid,
+			struct dt_object_format *dof,
+			struct thandle_exec_args *ta,
+			struct thandle	*th,
+			struct object_update_reply *reply,
+			int index, const char *file, int line)
+{
+	struct tx_arg *arg;
+	int rc;
+
+	rc = dt_declare_create(env, obj, attr, NULL, dof, th);
+	if (rc != 0)
+		return rc;
+
+	arg = tx_add_exec(ta, out_tx_create_exec, out_tx_create_undo, file,
+			  line);
+	if (IS_ERR(arg))
+		return PTR_ERR(arg);
+
+	/* release the object in out_trans_stop */
+	lu_object_get(&obj->do_lu);
+	arg->object = obj;
+	arg->u.create.attr = *attr;
+	if (parent_fid != NULL)
+		arg->u.create.fid = *parent_fid;
+	memset(&arg->u.create.hint, 0, sizeof(arg->u.create.hint));
+	arg->u.create.dof  = *dof;
+	arg->reply = reply;
+	arg->index = index;
+
+	return 0;
+}
+
+static int out_tx_attr_set_undo(const struct lu_env *env,
+				struct thandle *th, struct tx_arg *arg)
+{
+	CERROR("%s: attr set undo "DFID" unimplemented yet!: rc = %d\n",
+	       dt_obd_name(th->th_dev),
+	       PFID(lu_object_fid(&arg->object->do_lu)), -ENOTSUPP);
+
+	return -ENOTSUPP;
+}
+
+static int out_tx_attr_set_exec(const struct lu_env *env, struct thandle *th,
+				struct tx_arg *arg)
+{
+	struct dt_object	*dt_obj = arg->object;
 	int			rc;
-	ENTRY;
 
-	req = ptlrpc_request_alloc(imp, &RQF_UPDATE_OBJ);
-	if (req == NULL)
-		RETURN(-ENOMEM);
+	CDEBUG(D_OTHER, "%s: attr set "DFID"\n", dt_obd_name(th->th_dev),
+	       PFID(lu_object_fid(&dt_obj->do_lu)));
 
-	req_capsule_set_size(&req->rq_pill, &RMF_UPDATE, RCL_CLIENT,
-			     UPDATE_BUFFER_SIZE);
+	dt_write_lock(env, dt_obj, MOR_TGT_CHILD);
+	rc = dt_attr_set(env, dt_obj, &arg->u.attr_set.attr, th);
+	dt_write_unlock(env, dt_obj);
 
-	rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, UPDATE_OBJ);
-	if (rc != 0) {
-		ptlrpc_req_finished(req);
-		RETURN(rc);
+	CDEBUG(D_INFO, "%s: insert attr_set reply %p index %d: rc = %d\n",
+	       dt_obd_name(th->th_dev), arg->reply, arg->index, rc);
+
+	if (arg->reply != NULL)
+		object_update_result_insert(arg->reply, NULL, 0,
+					    arg->index, rc);
+
+	return rc;
+}
+
+int out_attr_set_add_exec(const struct lu_env *env, struct dt_object *dt_obj,
+			  const struct lu_attr *attr,
+			  struct thandle_exec_args *ta,
+			  struct thandle *th, struct object_update_reply *reply,
+			  int index, const char *file, int line)
+{
+	struct tx_arg	*arg;
+	int		rc;
+
+	rc = dt_declare_attr_set(env, dt_obj, attr, th);
+	if (rc != 0)
+		return rc;
+
+	arg = tx_add_exec(ta, out_tx_attr_set_exec, out_tx_attr_set_undo,
+			  file, line);
+	if (IS_ERR(arg))
+		return PTR_ERR(arg);
+
+	lu_object_get(&dt_obj->do_lu);
+	arg->object = dt_obj;
+	arg->u.attr_set.attr = *attr;
+	arg->reply = reply;
+	arg->index = index;
+	return 0;
+}
+
+static int out_tx_write_exec(const struct lu_env *env, struct thandle *th,
+			     struct tx_arg *arg)
+{
+	struct dt_object *dt_obj = arg->object;
+	int rc;
+
+	CDEBUG(D_INFO, "write "DFID" pos "LPU64" buf %p, len %lu\n",
+	       PFID(lu_object_fid(&dt_obj->do_lu)), arg->u.write.pos,
+	       arg->u.write.buf.lb_buf, (unsigned long)arg->u.write.buf.lb_len);
+
+	if (OBD_FAIL_CHECK(OBD_FAIL_OUT_ENOSPC)) {
+		rc = -ENOSPC;
+	} else {
+		dt_write_lock(env, dt_obj, MOR_TGT_CHILD);
+		rc = dt_record_write(env, dt_obj, &arg->u.write.buf,
+				     &arg->u.write.pos, th);
+		dt_write_unlock(env, dt_obj);
+
+		if (rc == 0)
+			rc = arg->u.write.buf.lb_len;
 	}
 
-	req_capsule_set_size(&req->rq_pill, &RMF_UPDATE_REPLY, RCL_SERVER,
-			     UPDATE_BUFFER_SIZE);
+	if (arg->reply != NULL)
+		object_update_result_insert(arg->reply, NULL, 0, arg->index,
+					    rc);
 
-	tmp = req_capsule_client_get(&req->rq_pill, &RMF_UPDATE);
-	memcpy(tmp, ubuf, ubuf_len);
-	ptlrpc_request_set_replen(req);
-	req->rq_request_portal = OUT_PORTAL;
-	req->rq_reply_portal = OSC_REPLY_PORTAL;
-	*reqp = req;
+	return rc > 0 ? 0 : rc;
+}
 
-	RETURN(rc);
+int out_write_add_exec(const struct lu_env *env, struct dt_object *dt_obj,
+		       const struct lu_buf *buf, loff_t pos,
+		       struct thandle_exec_args *ta, struct thandle *th,
+		       struct object_update_reply *reply, int index,
+		       const char *file, int line)
+{
+	struct tx_arg	*arg;
+	int		rc;
+
+	rc = dt_declare_record_write(env, dt_obj, buf, pos, th);
+	if (rc != 0)
+		return rc;
+
+	arg = tx_add_exec(ta, out_tx_write_exec, NULL, file, line);
+	if (IS_ERR(arg))
+		return PTR_ERR(arg);
+
+	lu_object_get(&dt_obj->do_lu);
+	arg->object = dt_obj;
+	arg->u.write.buf = *buf;
+	arg->u.write.pos = pos;
+	arg->reply = reply;
+	arg->index = index;
+	return 0;
+}
+
+static int out_tx_xattr_set_exec(const struct lu_env *env,
+				 struct thandle *th,
+				 struct tx_arg *arg)
+{
+	struct dt_object *dt_obj = arg->object;
+	int rc;
+
+	CDEBUG(D_INFO, "%s: set xattr buf %p name %s flag %d\n",
+	       dt_obd_name(th->th_dev), arg->u.xattr_set.buf.lb_buf,
+	       arg->u.xattr_set.name, arg->u.xattr_set.flags);
+
+	if (!lu_object_exists(&dt_obj->do_lu))
+		GOTO(out, rc = -ENOENT);
+
+	dt_write_lock(env, dt_obj, MOR_TGT_CHILD);
+	rc = dt_xattr_set(env, dt_obj, &arg->u.xattr_set.buf,
+			  arg->u.xattr_set.name, arg->u.xattr_set.flags,
+			  th);
+	/**
+	 * Ignore errors if this is LINK EA
+	 **/
+	if (unlikely(rc != 0 &&
+		     strcmp(arg->u.xattr_set.name, XATTR_NAME_LINK) == 0)) {
+		/* XXX: If the linkEA is overflow, then we need to notify the
+		 *	namespace LFSCK to skip "nlink" attribute verification
+		 *	on this object to avoid the "nlink" to be shrinked by
+		 *	wrong. It may be not good an interaction with LFSCK
+		 *	like this. We will consider to replace it with other
+		 *	mechanism in future. LU-5802. */
+		if (rc == -ENOSPC && arg->reply != NULL) {
+			struct lfsck_request *lr = &tgt_th_info(env)->tti_lr;
+
+			lfsck_pack_rfa(lr, lu_object_fid(&dt_obj->do_lu),
+				       LE_SKIP_NLINK, LFSCK_TYPE_NAMESPACE);
+			tgt_lfsck_in_notify(env,
+				tgt_ses_info(env)->tsi_tgt->lut_bottom, lr, th);
+		}
+
+		rc = 0;
+	}
+	dt_write_unlock(env, dt_obj);
+
+out:
+	CDEBUG(D_INFO, "%s: insert xattr set reply %p index %d: rc = %d\n",
+	       dt_obd_name(th->th_dev), arg->reply, arg->index, rc);
+
+	if (arg->reply != NULL)
+		object_update_result_insert(arg->reply, NULL, 0, arg->index,
+					    rc);
+
+	return rc;
+}
+
+int out_xattr_set_add_exec(const struct lu_env *env, struct dt_object *dt_obj,
+			   const struct lu_buf *buf, const char *name,
+			   int flags, struct thandle_exec_args *ta,
+			   struct thandle *th,
+			   struct object_update_reply *reply,
+			   int index, const char *file, int line)
+{
+	struct tx_arg	*arg;
+	int		rc;
+
+	rc = dt_declare_xattr_set(env, dt_obj, buf, name, flags, th);
+	if (rc != 0)
+		return rc;
+
+	if (strcmp(name, XATTR_NAME_LINK) == 0 && reply != NULL) {
+		struct lfsck_request *lr = &tgt_th_info(env)->tti_lr;
+
+		/* XXX: If the linkEA is overflow, then we need to notify the
+		 *	namespace LFSCK to skip "nlink" attribute verification
+		 *	on this object to avoid the "nlink" to be shrinked by
+		 *	wrong. It may be not good an interaction with LFSCK
+		 *	like this. We will consider to replace it with other
+		 *	mechanism in future. LU-5802. */
+		lfsck_pack_rfa(lr, lu_object_fid(&dt_obj->do_lu),
+			       LE_SKIP_NLINK_DECLARE, LFSCK_TYPE_NAMESPACE);
+		rc = tgt_lfsck_in_notify(env,
+					 tgt_ses_info(env)->tsi_tgt->lut_bottom,
+					 lr, ta->ta_handle);
+		if (rc != 0)
+			return rc;
+	}
+
+	arg = tx_add_exec(ta, out_tx_xattr_set_exec, NULL, file, line);
+	if (IS_ERR(arg))
+		return PTR_ERR(arg);
+
+	lu_object_get(&dt_obj->do_lu);
+	arg->object = dt_obj;
+	arg->u.xattr_set.name = name;
+	arg->u.xattr_set.flags = flags;
+	arg->u.xattr_set.buf = *buf;
+	arg->reply = reply;
+	arg->index = index;
+	arg->u.xattr_set.csum = 0;
+	return 0;
+}
+
+static int out_tx_xattr_del_exec(const struct lu_env *env, struct thandle *th,
+				 struct tx_arg *arg)
+{
+	struct dt_object *dt_obj = arg->object;
+	int rc;
+
+	CDEBUG(D_INFO, "%s: del xattr name '%s' on "DFID"\n",
+	       dt_obd_name(th->th_dev), arg->u.xattr_set.name,
+	       PFID(lu_object_fid(&dt_obj->do_lu)));
+
+	if (!lu_object_exists(&dt_obj->do_lu))
+		GOTO(out, rc = -ENOENT);
+
+	dt_write_lock(env, dt_obj, MOR_TGT_CHILD);
+	rc = dt_xattr_del(env, dt_obj, arg->u.xattr_set.name,
+			  th);
+	dt_write_unlock(env, dt_obj);
+out:
+	CDEBUG(D_INFO, "%s: insert xattr del reply %p index %d: rc = %d\n",
+	       dt_obd_name(th->th_dev), arg->reply, arg->index, rc);
+
+	if (arg->reply != NULL)
+		object_update_result_insert(arg->reply, NULL, 0, arg->index,
+					    rc);
+
+	return rc;
+}
+
+int out_xattr_del_add_exec(const struct lu_env *env, struct dt_object *dt_obj,
+			   const char *name, struct thandle_exec_args *ta,
+			   struct thandle *th,
+			   struct object_update_reply *reply, int index,
+			   const char *file, int line)
+{
+	struct tx_arg	*arg;
+	int		rc;
+
+	rc = dt_declare_xattr_del(env, dt_obj, name, th);
+	if (rc != 0)
+		return rc;
+
+	arg = tx_add_exec(ta, out_tx_xattr_del_exec, NULL, file, line);
+	if (IS_ERR(arg))
+		return PTR_ERR(arg);
+
+	lu_object_get(&dt_obj->do_lu);
+	arg->object = dt_obj;
+	arg->u.xattr_set.name = name;
+	arg->reply = reply;
+	arg->index = index;
+	return 0;
+}
+
+static int out_obj_ref_add(const struct lu_env *env,
+			   struct dt_object *dt_obj,
+			   struct thandle *th)
+{
+	int rc;
+
+	dt_write_lock(env, dt_obj, MOR_TGT_CHILD);
+	rc = dt_ref_add(env, dt_obj, th);
+	dt_write_unlock(env, dt_obj);
+
+	return rc;
+}
+
+static int out_obj_ref_del(const struct lu_env *env,
+			   struct dt_object *dt_obj,
+			   struct thandle *th)
+{
+	int rc;
+
+	dt_write_lock(env, dt_obj, MOR_TGT_CHILD);
+	rc = dt_ref_del(env, dt_obj, th);
+	dt_write_unlock(env, dt_obj);
+
+	return rc;
+}
+
+static int out_tx_ref_add_exec(const struct lu_env *env, struct thandle *th,
+			       struct tx_arg *arg)
+{
+	struct dt_object *dt_obj = arg->object;
+	int rc;
+
+	rc = out_obj_ref_add(env, dt_obj, th);
+
+	CDEBUG(D_INFO, "%s: insert ref_add reply %p index %d: rc = %d\n",
+	       dt_obd_name(th->th_dev), arg->reply, arg->index, rc);
+
+	if (arg->reply != NULL)
+		object_update_result_insert(arg->reply, NULL, 0, arg->index,
+					    rc);
+	return rc;
+}
+
+static int out_tx_ref_add_undo(const struct lu_env *env, struct thandle *th,
+			       struct tx_arg *arg)
+{
+	return out_obj_ref_del(env, arg->object, th);
+}
+
+int out_ref_add_add_exec(const struct lu_env *env, struct dt_object *dt_obj,
+			 struct thandle_exec_args *ta,
+			 struct thandle *th,
+			 struct object_update_reply *reply, int index,
+			 const char *file, int line)
+{
+	struct tx_arg	*arg;
+	int		rc;
+
+	rc = dt_declare_ref_add(env, dt_obj, th);
+	if (rc != 0)
+		return rc;
+
+	arg = tx_add_exec(ta, out_tx_ref_add_exec, out_tx_ref_add_undo, file,
+			  line);
+	if (IS_ERR(arg))
+		return PTR_ERR(arg);
+
+	lu_object_get(&dt_obj->do_lu);
+	arg->object = dt_obj;
+	arg->reply = reply;
+	arg->index = index;
+	return 0;
 }
-EXPORT_SYMBOL(out_prep_update_req);
 
-int out_remote_sync(const struct lu_env *env, struct obd_import *imp,
-		    struct update_request *update,
-		    struct ptlrpc_request **reqp)
+static int out_tx_ref_del_exec(const struct lu_env *env, struct thandle *th,
+			       struct tx_arg *arg)
 {
-	struct ptlrpc_request	*req = NULL;
+	struct dt_object	*dt_obj = arg->object;
 	int			 rc;
-	ENTRY;
 
-	rc = out_prep_update_req(env, imp, update->ur_buf,
-				 UPDATE_BUFFER_SIZE, &req);
+	rc = out_obj_ref_del(env, dt_obj, th);
+
+	CDEBUG(D_INFO, "%s: insert ref_del reply %p index %d: rc = %d\n",
+	       dt_obd_name(th->th_dev), arg->reply, arg->index, 0);
+
+	if (arg->reply != NULL)
+		object_update_result_insert(arg->reply, NULL, 0, arg->index,
+					    rc);
+
+	return rc;
+}
+
+static int out_tx_ref_del_undo(const struct lu_env *env, struct thandle *th,
+			       struct tx_arg *arg)
+{
+	return out_obj_ref_add(env, arg->object, th);
+}
+
+int out_ref_del_add_exec(const struct lu_env *env, struct dt_object *dt_obj,
+			 struct thandle_exec_args *ta,
+			 struct thandle *th,
+			 struct object_update_reply *reply, int index,
+			 const char *file, int line)
+{
+	struct tx_arg	*arg;
+	int		rc;
+
+	rc = dt_declare_ref_del(env, dt_obj, th);
 	if (rc != 0)
-		RETURN(rc);
+		return rc;
 
-	/* Note: some dt index api might return non-zero result here, like
-	 * osd_index_ea_lookup, so we should only check rc < 0 here */
-	rc = ptlrpc_queue_wait(req);
-	if (rc < 0) {
-		ptlrpc_req_finished(req);
-		update->ur_rc = rc;
-		RETURN(rc);
+	arg = tx_add_exec(ta, out_tx_ref_del_exec, out_tx_ref_del_undo, file,
+			  line);
+	if (IS_ERR(arg))
+		return PTR_ERR(arg);
+
+	lu_object_get(&dt_obj->do_lu);
+	arg->object = dt_obj;
+	arg->reply = reply;
+	arg->index = index;
+	return 0;
+}
+
+static int out_obj_index_insert(const struct lu_env *env,
+				struct dt_object *dt_obj,
+				const struct dt_rec *rec,
+				const struct dt_key *key,
+				struct thandle *th)
+{
+	int rc;
+
+	CDEBUG(D_INFO, "%s: index insert "DFID" name: %s fid "DFID", type %u\n",
+	       dt_obd_name(th->th_dev), PFID(lu_object_fid(&dt_obj->do_lu)),
+	       (char *)key, PFID(((struct dt_insert_rec *)rec)->rec_fid),
+	       ((struct dt_insert_rec *)rec)->rec_type);
+
+	if (dt_try_as_dir(env, dt_obj) == 0)
+		return -ENOTDIR;
+
+	dt_write_lock(env, dt_obj, MOR_TGT_CHILD);
+	rc = dt_insert(env, dt_obj, rec, key, th, 0);
+	dt_write_unlock(env, dt_obj);
+
+	return rc;
+}
+
+static int out_obj_index_delete(const struct lu_env *env,
+				struct dt_object *dt_obj,
+				const struct dt_key *key,
+				struct thandle *th)
+{
+	int rc;
+
+	CDEBUG(D_INFO, "%s: index delete "DFID" name: %s\n",
+	       dt_obd_name(th->th_dev), PFID(lu_object_fid(&dt_obj->do_lu)),
+	       (char *)key);
+
+	if (dt_try_as_dir(env, dt_obj) == 0)
+		return -ENOTDIR;
+
+	dt_write_lock(env, dt_obj, MOR_TGT_CHILD);
+	rc = dt_delete(env, dt_obj, key, th);
+	dt_write_unlock(env, dt_obj);
+
+	return rc;
+}
+
+static int out_tx_index_insert_exec(const struct lu_env *env,
+				    struct thandle *th, struct tx_arg *arg)
+{
+	struct dt_object *dt_obj = arg->object;
+	int rc;
+
+	if (unlikely(!dt_object_exists(dt_obj)))
+		RETURN(-ESTALE);
+
+	rc = out_obj_index_insert(env, dt_obj,
+				  (const struct dt_rec *)&arg->u.insert.rec,
+				  arg->u.insert.key, th);
+
+	CDEBUG(D_INFO, "%s: insert idx insert reply %p index %d: rc = %d\n",
+	       dt_obd_name(th->th_dev), arg->reply, arg->index, rc);
+
+	if (arg->reply != NULL)
+		object_update_result_insert(arg->reply, NULL, 0, arg->index,
+					    rc);
+	return rc;
+}
+
+static int out_tx_index_insert_undo(const struct lu_env *env,
+				    struct thandle *th, struct tx_arg *arg)
+{
+	return out_obj_index_delete(env, arg->object, arg->u.insert.key, th);
+}
+
+int out_index_insert_add_exec(const struct lu_env *env,
+			      struct dt_object *dt_obj,
+			      const struct dt_rec *rec,
+			      const struct dt_key *key,
+			      struct thandle_exec_args *ta,
+			      struct thandle *th,
+			      struct object_update_reply *reply,
+			      int index, const char *file, int line)
+{
+	struct tx_arg	*arg;
+	int		rc;
+
+	if (dt_try_as_dir(env, dt_obj) == 0) {
+		rc = -ENOTDIR;
+		return rc;
 	}
 
-	if (reqp != NULL) {
-		*reqp = req;
-	} else {
-		update->ur_rc = rc;
-		ptlrpc_req_finished(req);
+	rc = dt_declare_insert(env, dt_obj, rec, key, th);
+	if (rc != 0)
+		return rc;
+
+	arg = tx_add_exec(ta, out_tx_index_insert_exec,
+			  out_tx_index_insert_undo, file, line);
+	if (IS_ERR(arg))
+		return PTR_ERR(arg);
+
+	lu_object_get(&dt_obj->do_lu);
+	arg->object = dt_obj;
+	arg->reply = reply;
+	arg->index = index;
+	arg->u.insert.rec = *(const struct dt_insert_rec *)rec;
+	arg->u.insert.key = key;
+
+	return 0;
+}
+
+static int out_tx_index_delete_exec(const struct lu_env *env,
+				    struct thandle *th,
+				    struct tx_arg *arg)
+{
+	int rc;
+
+	rc = out_obj_index_delete(env, arg->object, arg->u.insert.key, th);
+
+	CDEBUG(D_INFO, "%s: delete idx insert reply %p index %d: rc = %d\n",
+	       dt_obd_name(th->th_dev), arg->reply, arg->index, rc);
+
+	if (arg->reply != NULL)
+		object_update_result_insert(arg->reply, NULL, 0, arg->index,
+					    rc);
+
+	return rc;
+}
+
+static int out_tx_index_delete_undo(const struct lu_env *env,
+				    struct thandle *th,
+				    struct tx_arg *arg)
+{
+	CERROR("%s: Oops, can not rollback index_delete yet: rc = %d\n",
+	       dt_obd_name(th->th_dev), -ENOTSUPP);
+	return -ENOTSUPP;
+}
+
+int out_index_delete_add_exec(const struct lu_env *env,
+			      struct dt_object *dt_obj,
+			      const struct dt_key *key,
+			      struct thandle_exec_args *ta,
+			      struct thandle *th,
+			      struct object_update_reply *reply,
+			      int index, const char *file, int line)
+{
+	struct tx_arg	*arg;
+	int		rc;
+
+	if (dt_try_as_dir(env, dt_obj) == 0) {
+		rc = -ENOTDIR;
+		return rc;
 	}
 
-	RETURN(rc);
+	LASSERT(ta->ta_handle != NULL);
+	rc = dt_declare_delete(env, dt_obj, key, th);
+	if (rc != 0)
+		return rc;
+
+	arg = tx_add_exec(ta, out_tx_index_delete_exec,
+			  out_tx_index_delete_undo, file, line);
+	if (IS_ERR(arg))
+		return PTR_ERR(arg);
+
+	lu_object_get(&dt_obj->do_lu);
+	arg->object = dt_obj;
+	arg->reply = reply;
+	arg->index = index;
+	arg->u.insert.key = key;
+	return 0;
 }
-EXPORT_SYMBOL(out_remote_sync);
 
-int out_insert_update(const struct lu_env *env, struct update_request *update,
-		      int op, const struct lu_fid *fid, int count,
-		      int *lens, const char **bufs)
+static int out_tx_destroy_exec(const struct lu_env *env, struct thandle *th,
+			       struct tx_arg *arg)
 {
-	struct update_buf    *ubuf = update->ur_buf;
-	struct update        *obj_update;
-	char                 *ptr;
-	int                   i;
-	int                   update_length;
-	ENTRY;
+	struct dt_object *dt_obj = arg->object;
+	int rc;
 
-	obj_update = (struct update *)((char *)ubuf +
-		      cfs_size_round(update_buf_size(ubuf)));
+	rc = out_obj_destroy(env, dt_obj, th);
 
-	/* Check update size to make sure it can fit into the buffer */
-	update_length = cfs_size_round(offsetof(struct update,
-				       u_bufs[0]));
-	for (i = 0; i < count; i++)
-		update_length += cfs_size_round(lens[i]);
+	CDEBUG(D_INFO, "%s: insert destroy reply %p index %d: rc = %d\n",
+	       dt_obd_name(th->th_dev), arg->reply, arg->index, rc);
 
-	if (cfs_size_round(update_buf_size(ubuf)) + update_length >
-	    UPDATE_BUFFER_SIZE || ubuf->ub_count >= UPDATE_MAX_OPS)
-		RETURN(-E2BIG);
+	if (arg->reply != NULL)
+		object_update_result_insert(arg->reply, NULL, 0, arg->index,
+					    rc);
 
-	if (count > UPDATE_BUF_COUNT)
-		RETURN(-E2BIG);
+	RETURN(rc);
+}
 
-	/* fill the update into the update buffer */
-	fid_cpu_to_le(&obj_update->u_fid, fid);
-	obj_update->u_type = cpu_to_le32(op);
-	obj_update->u_batchid = update->ur_batchid;
-	for (i = 0; i < count; i++)
-		obj_update->u_lens[i] = cpu_to_le32(lens[i]);
+static int out_tx_destroy_undo(const struct lu_env *env, struct thandle *th,
+			       struct tx_arg *arg)
+{
+	CERROR("%s: not support destroy undo yet!: rc = %d\n",
+	       dt_obd_name(th->th_dev), -ENOTSUPP);
+	return -ENOTSUPP;
+}
 
-	ptr = (char *)obj_update +
-			cfs_size_round(offsetof(struct update, u_bufs[0]));
-	for (i = 0; i < count; i++)
-		LOGL(bufs[i], lens[i], ptr);
+int out_destroy_add_exec(const struct lu_env *env, struct dt_object *dt_obj,
+			 struct thandle_exec_args *ta, struct thandle *th,
+			 struct object_update_reply *reply,
+			 int index, const char *file, int line)
+{
+	struct tx_arg	*arg;
+	int		rc;
 
-	ubuf->ub_count++;
+	rc = dt_declare_destroy(env, dt_obj, th);
+	if (rc != 0)
+		return rc;
 
-	CDEBUG(D_INFO, "%s: %p "DFID" idx %d: op %d params %d:%lu\n",
-	       update->ur_dt->dd_lu_dev.ld_obd->obd_name, ubuf, PFID(fid),
-	       ubuf->ub_count, op, count, update_buf_size(ubuf));
+	arg = tx_add_exec(ta, out_tx_destroy_exec, out_tx_destroy_undo,
+			  file, line);
+	if (IS_ERR(arg))
+		return PTR_ERR(arg);
 
-	RETURN(0);
+	lu_object_get(&dt_obj->do_lu);
+	arg->object = dt_obj;
+	arg->reply = reply;
+	arg->index = index;
+	return 0;
 }
-EXPORT_SYMBOL(out_insert_update);