return ptr;
}
-int osp_extend_update_buffer(const struct lu_env *env,
- struct osp_update_request *our)
-{
- struct object_update_request *obj_update_req;
- size_t new_size = our->our_req_size + OUT_UPDATE_BUFFER_SIZE_ADD;
-
- /* enlarge object update request size */
- if (new_size > OUT_UPDATE_BUFFER_SIZE_MAX)
- return -E2BIG;
-
- OBD_ALLOC_LARGE(obj_update_req, new_size);
- if (obj_update_req == NULL)
- return -ENOMEM;
-
- memcpy(obj_update_req, our->our_req, our->our_req_size);
-
- OBD_FREE_LARGE(our->our_req, our->our_req_size);
-
- our->our_req = obj_update_req;
- our->our_req_size = new_size;
-
- return 0;
-}
-
/**
* Implementation of dt_object_operations::do_create
*
if (mode > 0)
return ELDLM_OK;
+ if (einfo->ei_nonblock)
+ flags |= LDLM_FL_BLOCK_NOWAIT;
+
req = ldlm_enqueue_pack(osp->opd_exp, 0);
if (IS_ERR(req))
RETURN(PTR_ERR(req));
}
/**
- * Interpreter call for object destroy
- *
- * Object destroy interpreter, which will be called after destroying
- * the remote object to set flags and status.
- *
- * \param[in] env execution environment
- * \param[in] reply update reply
- * \param[in] req ptlrpc update request for destroying object
- * \param[in] obj object to be destroyed
- * \param[in] data data used in this function.
- * \param[in] index index(position) of destroy update in the whole
- * updates
- * \param[in] rc update result on the remote MDT.
- *
- * \retval only return 0 for now
- */
-static int osp_md_object_destroy_interpreter(const struct lu_env *env,
- struct object_update_reply *reply,
- struct ptlrpc_request *req,
- struct osp_object *obj,
- void *data, int index, int rc)
-{
- /* not needed in cache any more */
- set_bit(LU_OBJECT_HEARD_BANSHEE,
- &obj->opo_obj.do_lu.lo_header->loh_flags);
- return 0;
-}
-
-/**
* Implement OSP layer dt_object_operations::do_destroy() interface.
*
* Pack the destroy update into the RPC buffer, which will be sent
if (rc != 0)
RETURN(rc);
+ set_bit(LU_OBJECT_HEARD_BANSHEE, &dt->do_lu.lo_header->loh_flags);
rc = osp_insert_update_callback(env, update, dt2osp_obj(dt), NULL,
- osp_md_object_destroy_interpreter);
+ NULL);
+
RETURN(rc);
}
struct osp_device *osp = lu2osp_dev(dt->do_lu.lo_dev);
struct dt_device *dt_dev = &osp->opd_dt_dev;
struct lu_buf *lbuf = &osp_env_info(env)->osi_lb2;
- struct osp_update_request *update;
+ struct osp_update_request *update = NULL;
struct object_update_reply *reply;
struct out_read_reply *orr;
+ char *ptr = rbuf->lb_buf;
struct ptlrpc_request *req = NULL;
+ size_t total_length = rbuf->lb_len;
+ size_t max_buf_size;
+ loff_t offset = *pos;
int rc;
ENTRY;
- /* Because it needs send the update buffer right away,
- * just create an update buffer, instead of attaching the
- * update_remote list of the thandle. */
- update = osp_update_request_create(dt_dev);
- if (IS_ERR(update))
- RETURN(PTR_ERR(update));
+ /* Calculate the maxium buffer length for each read request */
+ max_buf_size = OUT_UPDATE_REPLY_SIZE - cfs_size_round(sizeof(*orr)) -
+ cfs_size_round(sizeof(struct object_update_result)) -
+ cfs_size_round(offsetof(struct object_update_reply,
+ ourp_lens[1]));
+ while (total_length > 0) {
+ size_t read_length;
+
+ /* Because it needs send the update buffer right away,
+ * just create an update buffer, instead of attaching the
+ * update_remote list of the thandle. */
+ update = osp_update_request_create(dt_dev);
+ if (IS_ERR(update))
+ GOTO(out, rc = PTR_ERR(update));
+
+ read_length = total_length > max_buf_size ?
+ max_buf_size : total_length;
+
+ rc = osp_update_rpc_pack(env, read, update, OUT_READ,
+ lu_object_fid(&dt->do_lu),
+ read_length, offset);
+ if (rc != 0) {
+ CERROR("%s: cannot insert update: rc = %d\n",
+ dt_dev->dd_lu_dev.ld_obd->obd_name, rc);
+ GOTO(out, rc);
+ }
- rc = osp_update_rpc_pack(env, read, update, OUT_READ,
- lu_object_fid(&dt->do_lu), rbuf->lb_len, *pos);
- if (rc != 0) {
- CERROR("%s: cannot insert update: rc = %d\n",
- dt_dev->dd_lu_dev.ld_obd->obd_name, rc);
- GOTO(out, rc);
- }
+ rc = osp_remote_sync(env, osp, update, &req);
+ if (rc < 0)
+ GOTO(out, rc);
- rc = osp_remote_sync(env, osp, update, &req);
- if (rc < 0)
- GOTO(out, rc);
+ reply = req_capsule_server_sized_get(&req->rq_pill,
+ &RMF_OUT_UPDATE_REPLY,
+ OUT_UPDATE_REPLY_SIZE);
- reply = req_capsule_server_sized_get(&req->rq_pill,
- &RMF_OUT_UPDATE_REPLY,
- OUT_UPDATE_REPLY_SIZE);
- if (reply->ourp_magic != UPDATE_REPLY_MAGIC) {
- CERROR("%s: invalid update reply magic %x expected %x:"
- " rc = %d\n", dt_dev->dd_lu_dev.ld_obd->obd_name,
- reply->ourp_magic, UPDATE_REPLY_MAGIC, -EPROTO);
- GOTO(out, rc = -EPROTO);
- }
+ if (reply->ourp_magic != UPDATE_REPLY_MAGIC) {
+ CERROR("%s: invalid update reply magic %x expected %x:"
+ " rc = %d\n", dt_dev->dd_lu_dev.ld_obd->obd_name,
+ reply->ourp_magic, UPDATE_REPLY_MAGIC, -EPROTO);
+ GOTO(out, rc = -EPROTO);
+ }
- rc = object_update_result_data_get(reply, lbuf, 0);
- if (rc < 0)
- GOTO(out, rc);
+ rc = object_update_result_data_get(reply, lbuf, 0);
+ if (rc < 0)
+ GOTO(out, rc);
- if (lbuf->lb_len < sizeof(*orr))
- GOTO(out, rc = -EPROTO);
+ if (lbuf->lb_len < sizeof(*orr))
+ GOTO(out, rc = -EPROTO);
- orr = lbuf->lb_buf;
- orr_le_to_cpu(orr, orr);
+ orr = lbuf->lb_buf;
+ orr_le_to_cpu(orr, orr);
+ offset = orr->orr_offset;
+ if (orr->orr_size > max_buf_size)
+ GOTO(out, rc = -EPROTO);
- *pos = orr->orr_offset;
+ memcpy(ptr, orr->orr_data, orr->orr_size);
+ ptr += orr->orr_size;
+ total_length -= orr->orr_size;
- if (orr->orr_size > rbuf->lb_len)
- GOTO(out, rc = -EPROTO);
+ CDEBUG(D_INFO, "%s: read "DFID" pos "LPU64" len %u left %zu\n",
+ osp->opd_obd->obd_name, PFID(lu_object_fid(&dt->do_lu)),
+ offset, orr->orr_size, total_length);
- memcpy(rbuf->lb_buf, orr->orr_data, orr->orr_size);
+ if (orr->orr_size < read_length)
+ break;
- CDEBUG(D_INFO, "%s: read "DFID" pos "LPU64" len %u\n",
+ ptlrpc_req_finished(req);
+ osp_update_request_destroy(update);
+ req = NULL;
+ update = NULL;
+ }
+
+ total_length = rbuf->lb_len - total_length;
+ *pos = offset;
+ CDEBUG(D_INFO, "%s: total read "DFID" pos "LPU64" len %zu\n",
osp->opd_obd->obd_name, PFID(lu_object_fid(&dt->do_lu)),
- *pos, orr->orr_size);
- GOTO(out, rc = (int)orr->orr_size);
+ *pos, total_length);
+ GOTO(out, rc = (int)total_length);
out:
if (req != NULL)
ptlrpc_req_finished(req);
- osp_update_request_destroy(update);
+ if (update != NULL)
+ osp_update_request_destroy(update);
return rc;
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff