[lustre-devel] [PATCH 05/37] lustre: obd_type: use typ_kobj.name as typ_name
NeilBrown
neilb at suse.com
Mon Feb 18 16:09:05 PST 2019
As the kobject has a name (after kobject_add has been called),
we don't need to also store it in typ_name.
So use typ_kobj.name instead of typ_name.
This requires changing some "char *" to "const char *" as
typ.kobj.name is const.
Signed-off-by: NeilBrown <neilb at suse.com>
---
drivers/staging/lustre/lustre/include/lustre_net.h | 4 ++-
drivers/staging/lustre/lustre/include/obd.h | 2 +-
drivers/staging/lustre/lustre/include/obd_class.h | 2 +-
drivers/staging/lustre/lustre/ldlm/ldlm_lib.c | 2 +-
drivers/staging/lustre/lustre/obdclass/genops.c | 25 ++++++++------------
drivers/staging/lustre/lustre/ptlrpc/client.c | 2 +-
6 files changed, 16 insertions(+), 21 deletions(-)
diff --git a/drivers/staging/lustre/lustre/include/lustre_net.h b/drivers/staging/lustre/lustre/include/lustre_net.h
index 47b9632e5660..f3b6ba061eed 100644
--- a/drivers/staging/lustre/lustre/include/lustre_net.h
+++ b/drivers/staging/lustre/lustre/include/lustre_net.h
@@ -308,7 +308,7 @@ struct ptlrpc_client {
/** What portal do we expect replies on */
u32 cli_reply_portal;
/** Name of the client */
- char *cli_name;
+ const char *cli_name;
};
/** state flags of requests */
@@ -1817,7 +1817,7 @@ void ptlrpc_request_committed(struct ptlrpc_request *req, int force);
int ptlrpc_inc_ref(void);
void ptlrpc_dec_ref(void);
-void ptlrpc_init_client(int req_portal, int rep_portal, char *name,
+void ptlrpc_init_client(int req_portal, int rep_portal, const char *name,
struct ptlrpc_client *);
struct ptlrpc_connection *ptlrpc_uuid_to_connection(struct obd_uuid *uuid,
lnet_nid_t nid4refnet);
diff --git a/drivers/staging/lustre/lustre/include/obd.h b/drivers/staging/lustre/lustre/include/obd.h
index b161542855fc..3aa9cc889949 100644
--- a/drivers/staging/lustre/lustre/include/obd.h
+++ b/drivers/staging/lustre/lustre/include/obd.h
@@ -103,12 +103,12 @@ struct obd_type {
struct obd_ops *typ_dt_ops;
struct md_ops *typ_md_ops;
struct dentry *typ_debugfs_entry;
- char *typ_name;
int typ_refcnt;
struct lu_device_type *typ_lu;
spinlock_t obd_type_lock;
struct kobject typ_kobj;
};
+#define typ_name typ_kobj.name
struct brw_page {
u64 off;
diff --git a/drivers/staging/lustre/lustre/include/obd_class.h b/drivers/staging/lustre/lustre/include/obd_class.h
index e4695f5b748d..a61c7950393c 100644
--- a/drivers/staging/lustre/lustre/include/obd_class.h
+++ b/drivers/staging/lustre/lustre/include/obd_class.h
@@ -74,7 +74,7 @@ int class_name2dev(const char *name);
struct obd_device *class_name2obd(const char *name);
int class_uuid2dev(struct obd_uuid *uuid);
struct obd_device *class_find_client_obd(struct obd_uuid *tgt_uuid,
- const char *typ_name,
+ const char *type_name,
struct obd_uuid *grp_uuid);
struct obd_device *class_devices_in_group(struct obd_uuid *grp_uuid,
int *next);
diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_lib.c b/drivers/staging/lustre/lustre/ldlm/ldlm_lib.c
index aef83ffc8bb3..ac0fbb24fc92 100644
--- a/drivers/staging/lustre/lustre/ldlm/ldlm_lib.c
+++ b/drivers/staging/lustre/lustre/ldlm/ldlm_lib.c
@@ -247,7 +247,7 @@ int client_obd_setup(struct obd_device *obddev, struct lustre_cfg *lcfg)
struct obd_import *imp;
struct obd_uuid server_uuid;
int rq_portal, rp_portal, connect_op;
- char *name = obddev->obd_type->typ_name;
+ const char *name = obddev->obd_type->typ_name;
enum ldlm_ns_type ns_type = LDLM_NS_TYPE_UNKNOWN;
struct ptlrpc_connection fake_conn = {
.c_self = 0,
diff --git a/drivers/staging/lustre/lustre/obdclass/genops.c b/drivers/staging/lustre/lustre/obdclass/genops.c
index 4c0dc2098823..32581f1a92ac 100644
--- a/drivers/staging/lustre/lustre/obdclass/genops.c
+++ b/drivers/staging/lustre/lustre/obdclass/genops.c
@@ -147,7 +147,6 @@ static void class_sysfs_release(struct kobject *kobj)
list_del(&type->typ_chain);
spin_unlock(&obd_types_lock);
- kfree(type->typ_name);
kfree(type->typ_md_ops);
kfree(type->typ_dt_ops);
kfree(type);
@@ -186,28 +185,24 @@ int class_register_type(struct obd_ops *dt_ops, struct md_ops *md_ops,
type->typ_dt_ops = kzalloc(sizeof(*type->typ_dt_ops), GFP_NOFS);
type->typ_md_ops = kzalloc(sizeof(*type->typ_md_ops), GFP_NOFS);
- type->typ_name = kzalloc(strlen(name) + 1, GFP_NOFS);
if (!type->typ_dt_ops ||
- !type->typ_md_ops ||
- !type->typ_name)
+ !type->typ_md_ops)
goto failed;
*type->typ_dt_ops = *dt_ops;
/* md_ops is optional */
if (md_ops)
*type->typ_md_ops = *md_ops;
- strcpy(type->typ_name, name);
spin_lock_init(&type->obd_type_lock);
- type->typ_debugfs_entry = debugfs_create_dir(type->typ_name,
- debugfs_lustre_root);
-
rc = kobject_add(&type->typ_kobj, &lustre_kset->kobj, "%s", name);
-
if (rc)
goto failed;
+ type->typ_debugfs_entry = debugfs_create_dir(type->typ_name,
+ debugfs_lustre_root);
+
if (ldt) {
type->typ_lu = ldt;
rc = lu_device_type_init(ldt);
@@ -534,7 +529,7 @@ struct obd_device *class_num2obd(int num)
* otherwise any client connected to the tgt is returned.
*/
struct obd_device *class_find_client_obd(struct obd_uuid *tgt_uuid,
- const char *typ_name,
+ const char *type_name,
struct obd_uuid *grp_uuid)
{
int i;
@@ -545,8 +540,8 @@ struct obd_device *class_find_client_obd(struct obd_uuid *tgt_uuid,
if (!obd)
continue;
- if ((strncmp(obd->obd_type->typ_name, typ_name,
- strlen(typ_name)) == 0)) {
+ if ((strncmp(obd->obd_type->typ_name, type_name,
+ strlen(type_name)) == 0)) {
if (obd_uuid_equals(tgt_uuid,
&obd->u.cli.cl_target_uuid) &&
((grp_uuid) ? obd_uuid_equals(grp_uuid,
@@ -1358,7 +1353,7 @@ EXPORT_SYMBOL(obd_get_max_rpcs_in_flight);
int obd_set_max_rpcs_in_flight(struct client_obd *cli, u32 max)
{
struct obd_request_slot_waiter *orsw;
- const char *typ_name;
+ const char *type_name;
u32 old;
int diff;
int rc;
@@ -1367,8 +1362,8 @@ int obd_set_max_rpcs_in_flight(struct client_obd *cli, u32 max)
if (max > OBD_MAX_RIF_MAX || max < 1)
return -ERANGE;
- typ_name = cli->cl_import->imp_obd->obd_type->typ_name;
- if (!strcmp(typ_name, LUSTRE_MDC_NAME)) {
+ type_name = cli->cl_import->imp_obd->obd_type->typ_name;
+ if (!strcmp(type_name, LUSTRE_MDC_NAME)) {
/*
* adjust max_mod_rpcs_in_flight to ensure it is always
* strictly lower that max_rpcs_in_flight
diff --git a/drivers/staging/lustre/lustre/ptlrpc/client.c b/drivers/staging/lustre/lustre/ptlrpc/client.c
index b2b11047ea19..0a76a8549fac 100644
--- a/drivers/staging/lustre/lustre/ptlrpc/client.c
+++ b/drivers/staging/lustre/lustre/ptlrpc/client.c
@@ -67,7 +67,7 @@ static int ptlrpc_unregister_reply(struct ptlrpc_request *request, int async);
/**
* Initialize passed in client structure \a cl.
*/
-void ptlrpc_init_client(int req_portal, int rep_portal, char *name,
+void ptlrpc_init_client(int req_portal, int rep_portal, const char *name,
struct ptlrpc_client *cl)
{
cl->cli_request_portal = req_portal;
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