Staging: lustre: Replace GOTO macro with necessary code

The GOTO macro is neither standard in Linux nor does its definiton
contain much useful code. Hence GOTO can be replaced with useful
parts of its definition. In a statement like GOTO(label, rc), the
replacing code will be goto label if rc is a constant or a variable.
But in cases like GOTO(label, e) where e is an assignment statement,
both assignment and goto statements are kept.

This patch was done using Coccinelle and the following semantic
patch was used:

@@
identifier rc,label;
expression e;
constant c;
@@

(
-GOTO(label,rc = e);
+rc = e;
+goto label;
|
-GOTO(label,rc);
+goto label;
|
-GOTO(label,c);
+goto label;
)

Signed-off-by: Tina Johnson <tinajohnson.1234@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lustre/osc/osc_request.c

@@ -237,7 +237,7 @@ static int osc_getattr_interpret(const struct lu_env *env,
 	struct ost_body *body;
 
 	if (rc != 0)
-		GOTO(out, rc);
+		goto out;
 
 	body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
 	if (body) {
@@ -313,11 +313,13 @@ static int osc_getattr(const struct lu_env *env, struct obd_export *exp,
 
 	rc = ptlrpc_queue_wait(req);
 	if (rc)
-		GOTO(out, rc);
+		goto out;
 
 	body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
-	if (body == NULL)
-		GOTO(out, rc = -EPROTO);
+	if (body == NULL) {
+		rc = -EPROTO;
+		goto out;
+	}
 
 	CDEBUG(D_INODE, "mode: %o\n", body->oa.o_mode);
 	lustre_get_wire_obdo(&req->rq_import->imp_connect_data, oinfo->oi_oa,
@@ -357,11 +359,13 @@ static int osc_setattr(const struct lu_env *env, struct obd_export *exp,
 
 	rc = ptlrpc_queue_wait(req);
 	if (rc)
-		GOTO(out, rc);
+		goto out;
 
 	body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
-	if (body == NULL)
-		GOTO(out, rc = -EPROTO);
+	if (body == NULL) {
+		rc = -EPROTO;
+		goto out;
+	}
 
 	lustre_get_wire_obdo(&req->rq_import->imp_connect_data, oinfo->oi_oa,
 			     &body->oa);
@@ -378,11 +382,13 @@ static int osc_setattr_interpret(const struct lu_env *env,
 	struct ost_body *body;
 
 	if (rc != 0)
-		GOTO(out, rc);
+		goto out;
 
 	body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
-	if (body == NULL)
-		GOTO(out, rc = -EPROTO);
+	if (body == NULL) {
+		rc = -EPROTO;
+		goto out;
+	}
 
 	lustre_get_wire_obdo(&req->rq_import->imp_connect_data, sa->sa_oa,
 			     &body->oa);
@@ -468,13 +474,15 @@ int osc_real_create(struct obd_export *exp, struct obdo *oa,
 	}
 
 	req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_CREATE);
-	if (req == NULL)
-		GOTO(out, rc = -ENOMEM);
+	if (req == NULL) {
+		rc = -ENOMEM;
+		goto out;
+	}
 
 	rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_CREATE);
 	if (rc) {
 		ptlrpc_request_free(req);
-		GOTO(out, rc);
+		goto out;
 	}
 
 	body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
@@ -494,11 +502,13 @@ int osc_real_create(struct obd_export *exp, struct obdo *oa,
 
 	rc = ptlrpc_queue_wait(req);
 	if (rc)
-		GOTO(out_req, rc);
+		goto out_req;
 
 	body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
-	if (body == NULL)
-		GOTO(out_req, rc = -EPROTO);
+	if (body == NULL) {
+		rc = -EPROTO;
+		goto out_req;
+	}
 
 	CDEBUG(D_INFO, "oa flags %x\n", oa->o_flags);
 	lustre_get_wire_obdo(&req->rq_import->imp_connect_data, oa, &body->oa);
@@ -585,12 +595,13 @@ static int osc_sync_interpret(const struct lu_env *env,
 	struct ost_body *body;
 
 	if (rc)
-		GOTO(out, rc);
+		goto out;
 
 	body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
 	if (body == NULL) {
 		CERROR ("can't unpack ost_body\n");
-		GOTO(out, rc = -EPROTO);
+		rc = -EPROTO;
+		goto out;
 	}
 
 	*fa->fa_oi->oi_oa = body->oa;
@@ -891,7 +902,7 @@ static int osc_shrink_grant_interpret(const struct lu_env *env,
 
 	if (rc != 0) {
 		__osc_update_grant(cli, oa->o_grant);
-		GOTO(out, rc);
+		goto out;
 	}
 
 	body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
@@ -1294,8 +1305,10 @@ static int osc_brw_prep_request(int cmd, struct client_obd *cli,
 		opc == OST_WRITE ? BULK_GET_SOURCE : BULK_PUT_SINK,
 		OST_BULK_PORTAL);
 
-	if (desc == NULL)
-		GOTO(out, rc = -ENOMEM);
+	if (desc == NULL) {
+		rc = -ENOMEM;
+		goto out;
+	}
 	/* NB request now owns desc and will free it when it gets freed */
 
 	body = req_capsule_client_get(pill, &RMF_OST_BODY);
@@ -1540,15 +1553,17 @@ static int osc_brw_fini_request(struct ptlrpc_request *req, int rc)
 		rc = check_write_rcs(req, aa->aa_requested_nob,
 				     aa->aa_nio_count,
 				     aa->aa_page_count, aa->aa_ppga);
-		GOTO(out, rc);
+		goto out;
 	}
 
 	/* The rest of this function executes only for OST_READs */
 
 	/* if unwrap_bulk failed, return -EAGAIN to retry */
 	rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk, rc);
-	if (rc < 0)
-		GOTO(out, rc = -EAGAIN);
+	if (rc < 0) {
+		rc = -EAGAIN;
+		goto out;
+	}
 
 	if (rc > aa->aa_requested_nob) {
 		CERROR("Unexpected rc %d (%d requested)\n", rc,
@@ -1898,16 +1913,22 @@ int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
 		mpflag = cfs_memory_pressure_get_and_set();
 
 	OBD_ALLOC(crattr, sizeof(*crattr));
-	if (crattr == NULL)
-		GOTO(out, rc = -ENOMEM);
+	if (crattr == NULL) {
+		rc = -ENOMEM;
+		goto out;
+	}
 
 	OBD_ALLOC(pga, sizeof(*pga) * page_count);
-	if (pga == NULL)
-		GOTO(out, rc = -ENOMEM);
+	if (pga == NULL) {
+		rc = -ENOMEM;
+		goto out;
+	}
 
 	OBDO_ALLOC(oa);
-	if (oa == NULL)
-		GOTO(out, rc = -ENOMEM);
+	if (oa == NULL) {
+		rc = -ENOMEM;
+		goto out;
+	}
 
 	i = 0;
 	list_for_each_entry(oap, &rpc_list, oap_rpc_item) {
@@ -1915,8 +1936,10 @@ int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
 		if (clerq == NULL) {
 			clerq = cl_req_alloc(env, page, crt,
 					     1 /* only 1-object rpcs for now */);
-			if (IS_ERR(clerq))
-				GOTO(out, rc = PTR_ERR(clerq));
+			if (IS_ERR(clerq)) {
+				rc = PTR_ERR(clerq);
+				goto out;
+			}
 			lock = oap->oap_ldlm_lock;
 		}
 		if (mem_tight)
@@ -1942,7 +1965,7 @@ int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
 	rc = cl_req_prep(env, clerq);
 	if (rc != 0) {
 		CERROR("cl_req_prep failed: %d\n", rc);
-		GOTO(out, rc);
+		goto out;
 	}
 
 	sort_brw_pages(pga, page_count);
@@ -1950,7 +1973,7 @@ int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
 			pga, &req, crattr->cra_capa, 1, 0);
 	if (rc != 0) {
 		CERROR("prep_req failed: %d\n", rc);
-		GOTO(out, rc);
+		goto out;
 	}
 
 	req->rq_interpret_reply = brw_interpret;
@@ -2435,15 +2458,18 @@ static int osc_statfs_interpret(const struct lu_env *env,
 		 return rc;
 
 	if ((rc == -ENOTCONN || rc == -EAGAIN) &&
-	    (aa->aa_oi->oi_flags & OBD_STATFS_NODELAY))
-		GOTO(out, rc = 0);
+	    (aa->aa_oi->oi_flags & OBD_STATFS_NODELAY)) {
+		rc = 0;
+		goto out;
+	}
 
 	if (rc != 0)
-		GOTO(out, rc);
+		goto out;
 
 	msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
 	if (msfs == NULL) {
-		GOTO(out, rc = -EPROTO);
+		rc = -EPROTO;
+		goto out;
 	}
 
 	*aa->aa_oi->oi_osfs = *msfs;
@@ -2543,11 +2569,12 @@ static int osc_statfs(const struct lu_env *env, struct obd_export *exp,
 
 	rc = ptlrpc_queue_wait(req);
 	if (rc)
-		GOTO(out, rc);
+		goto out;
 
 	msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
 	if (msfs == NULL) {
-		GOTO(out, rc = -EPROTO);
+		rc = -EPROTO;
+		goto out;
 	}
 
 	*osfs = *msfs;
@@ -2639,19 +2666,23 @@ static int osc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
 
 		buf = NULL;
 		len = 0;
-		if (obd_ioctl_getdata(&buf, &len, (void *)uarg))
-			GOTO(out, err = -EINVAL);
+		if (obd_ioctl_getdata(&buf, &len, (void *)uarg)) {
+			err = -EINVAL;
+			goto out;
+		}
 
 		data = (struct obd_ioctl_data *)buf;
 
 		if (sizeof(*desc) > data->ioc_inllen1) {
 			obd_ioctl_freedata(buf, len);
-			GOTO(out, err = -EINVAL);
+			err = -EINVAL;
+			goto out;
 		}
 
 		if (data->ioc_inllen2 < sizeof(uuid)) {
 			obd_ioctl_freedata(buf, len);
-			GOTO(out, err = -EINVAL);
+			err = -EINVAL;
+			goto out;
 		}
 
 		desc = (struct lov_desc *)data->ioc_inlbuf1;
@@ -2669,36 +2700,37 @@ static int osc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
 		if (err)
 			err = -EFAULT;
 		obd_ioctl_freedata(buf, len);
-		GOTO(out, err);
+		goto out;
 	}
 	case LL_IOC_LOV_SETSTRIPE:
 		err = obd_alloc_memmd(exp, karg);
 		if (err > 0)
 			err = 0;
-		GOTO(out, err);
+		goto out;
 	case LL_IOC_LOV_GETSTRIPE:
 		err = osc_getstripe(karg, uarg);
-		GOTO(out, err);
+		goto out;
 	case OBD_IOC_CLIENT_RECOVER:
 		err = ptlrpc_recover_import(obd->u.cli.cl_import,
 					    data->ioc_inlbuf1, 0);
 		if (err > 0)
 			err = 0;
-		GOTO(out, err);
+		goto out;
 	case IOC_OSC_SET_ACTIVE:
 		err = ptlrpc_set_import_active(obd->u.cli.cl_import,
 					       data->ioc_offset);
-		GOTO(out, err);
+		goto out;
 	case OBD_IOC_POLL_QUOTACHECK:
 		err = osc_quota_poll_check(exp, (struct if_quotacheck *)karg);
-		GOTO(out, err);
+		goto out;
 	case OBD_IOC_PING_TARGET:
 		err = ptlrpc_obd_ping(obd);
-		GOTO(out, err);
+		goto out;
 	default:
 		CDEBUG(D_INODE, "unrecognised ioctl %#x by %s\n",
 		       cmd, current_comm());
-		GOTO(out, err = -ENOTTY);
+		err = -ENOTTY;
+		goto out;
 	}
 out:
 	module_put(THIS_MODULE);
@@ -2743,11 +2775,13 @@ static int osc_get_info(const struct lu_env *env, struct obd_export *exp,
 		ptlrpc_request_set_replen(req);
 		rc = ptlrpc_queue_wait(req);
 		if (rc)
-			GOTO(out, rc);
+			goto out;
 
 		reply = req_capsule_server_get(&req->rq_pill, &RMF_OBD_ID);
-		if (reply == NULL)
-			GOTO(out, rc = -EPROTO);
+		if (reply == NULL) {
+			rc = -EPROTO;
+			goto out;
+		}
 
 		*((u64 *)val) = *reply;
 	out:
@@ -2798,8 +2832,10 @@ static int osc_get_info(const struct lu_env *env, struct obd_export *exp,
 skip_locking:
 		req = ptlrpc_request_alloc(class_exp2cliimp(exp),
 					   &RQF_OST_GET_INFO_FIEMAP);
-		if (req == NULL)
-			GOTO(drop_lock, rc = -ENOMEM);
+		if (req == NULL) {
+			rc = -ENOMEM;
+			goto drop_lock;
+		}
 
 		req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_KEY,
 				     RCL_CLIENT, keylen);
@@ -2811,7 +2847,7 @@ skip_locking:
 		rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GET_INFO);
 		if (rc) {
 			ptlrpc_request_free(req);
-			GOTO(drop_lock, rc);
+			goto drop_lock;
 		}
 
 		tmp = req_capsule_client_get(&req->rq_pill, &RMF_FIEMAP_KEY);
@@ -2822,11 +2858,13 @@ skip_locking:
 		ptlrpc_request_set_replen(req);
 		rc = ptlrpc_queue_wait(req);
 		if (rc)
-			GOTO(fini_req, rc);
+			goto fini_req;
 
 		reply = req_capsule_server_get(&req->rq_pill, &RMF_FIEMAP_VAL);
-		if (reply == NULL)
-			GOTO(fini_req, rc = -EPROTO);
+		if (reply == NULL) {
+			rc = -EPROTO;
+			goto fini_req;
+		}
 
 		memcpy(val, reply, *vallen);
 fini_req:
@@ -3133,16 +3171,18 @@ int osc_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
 
 	rc = client_obd_setup(obd, lcfg);
 	if (rc)
-		GOTO(out_ptlrpcd, rc);
+		goto out_ptlrpcd;
 
 	handler = ptlrpcd_alloc_work(cli->cl_import, brw_queue_work, cli);
-	if (IS_ERR(handler))
-		GOTO(out_client_setup, rc = PTR_ERR(handler));
+	if (IS_ERR(handler)) {
+		rc = PTR_ERR(handler);
+		goto out_client_setup;
+	}
 	cli->cl_writeback_work = handler;
 
 	rc = osc_quota_setup(obd);
 	if (rc)
-		GOTO(out_ptlrpcd_work, rc);
+		goto out_ptlrpcd_work;
 
 	cli->cl_grant_shrink_interval = GRANT_SHRINK_INTERVAL;
 	lprocfs_osc_init_vars(&lvars);