configfs: switch ->default groups to a linked list
Replace the current NULL-terminated array of default groups with a linked
list. This gets rid of lots of nasty code to size and/or dynamically
allocate the array.
While we're at it also provide a conveniant helper to remove the default
groups.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Felipe Balbi <balbi@kernel.org> [drivers/usb/gadget]
Acked-by: Joel Becker <jlbec@evilplan.org>
Acked-by: Nicholas Bellinger <nab@linux-iscsi.org>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
diff --git a/Documentation/filesystems/configfs/configfs.txt b/Documentation/filesystems/configfs/configfs.txt
index e5fe521..8ec9136 100644
--- a/Documentation/filesystems/configfs/configfs.txt
+++ b/Documentation/filesystems/configfs/configfs.txt
@@ -250,7 +250,8 @@
struct config_item cg_item;
struct list_head cg_children;
struct configfs_subsystem *cg_subsys;
- struct config_group **default_groups;
+ struct list_head default_groups;
+ struct list_head group_entry;
};
void config_group_init(struct config_group *group);
@@ -420,15 +421,15 @@
children of the parent group. If ct_group_ops->make_group() exists,
other child groups can be created on the parent group directly.
-A configfs subsystem specifies default groups by filling in the
-NULL-terminated array default_groups on the config_group structure.
-Each group in that array is populated in the configfs tree at the same
+A configfs subsystem specifies default groups by adding them using the
+configfs_add_default_group() function to the parent config_group
+structure. Each added group is populated in the configfs tree at the same
time as the parent group. Similarly, they are removed at the same time
as the parent. No extra notification is provided. When a ->drop_item()
method call notifies the subsystem the parent group is going away, it
also means every default group child associated with that parent group.
-As a consequence of this, default_groups cannot be removed directly via
+As a consequence of this, default groups cannot be removed directly via
rmdir(2). They also are not considered when rmdir(2) on the parent
group is checking for children.
diff --git a/drivers/infiniband/core/cma_configfs.c b/drivers/infiniband/core/cma_configfs.c
index 18b112a..41573df 100644
--- a/drivers/infiniband/core/cma_configfs.c
+++ b/drivers/infiniband/core/cma_configfs.c
@@ -49,8 +49,6 @@
char name[IB_DEVICE_NAME_MAX];
struct config_group device_group;
struct config_group ports_group;
- struct config_group *default_dev_group[2];
- struct config_group **default_ports_group;
struct cma_dev_port_group *ports;
};
@@ -158,7 +156,6 @@
unsigned int i;
unsigned int ports_num;
struct cma_dev_port_group *ports;
- struct config_group **ports_group;
int err;
ibdev = cma_get_ib_dev(cma_dev);
@@ -169,9 +166,8 @@
ports_num = ibdev->phys_port_cnt;
ports = kcalloc(ports_num, sizeof(*cma_dev_group->ports),
GFP_KERNEL);
- ports_group = kcalloc(ports_num + 1, sizeof(*ports_group), GFP_KERNEL);
- if (!ports || !ports_group) {
+ if (!ports) {
err = -ENOMEM;
goto free;
}
@@ -185,18 +181,16 @@
config_group_init_type_name(&ports[i].group,
port_str,
&cma_port_group_type);
- ports_group[i] = &ports[i].group;
+ configfs_add_default_group(&ports[i].group,
+ &cma_dev_group->ports_group);
+
}
- ports_group[i] = NULL;
- cma_dev_group->default_ports_group = ports_group;
cma_dev_group->ports = ports;
return 0;
free:
kfree(ports);
- kfree(ports_group);
cma_dev_group->ports = NULL;
- cma_dev_group->default_ports_group = NULL;
return err;
}
@@ -220,9 +214,7 @@
ports_group);
kfree(cma_dev_group->ports);
- kfree(cma_dev_group->default_ports_group);
cma_dev_group->ports = NULL;
- cma_dev_group->default_ports_group = NULL;
};
static struct configfs_item_operations cma_ports_item_ops = {
@@ -263,22 +255,17 @@
strncpy(cma_dev_group->name, name, sizeof(cma_dev_group->name));
+ config_group_init_type_name(&cma_dev_group->ports_group, "ports",
+ &cma_ports_group_type);
+
err = make_cma_ports(cma_dev_group, cma_dev);
if (err)
goto fail;
- cma_dev_group->ports_group.default_groups =
- cma_dev_group->default_ports_group;
- config_group_init_type_name(&cma_dev_group->ports_group, "ports",
- &cma_ports_group_type);
-
- cma_dev_group->device_group.default_groups
- = cma_dev_group->default_dev_group;
- cma_dev_group->default_dev_group[0] = &cma_dev_group->ports_group;
- cma_dev_group->default_dev_group[1] = NULL;
-
config_group_init_type_name(&cma_dev_group->device_group, name,
&cma_device_group_type);
+ configfs_add_default_group(&cma_dev_group->ports_group,
+ &cma_dev_group->device_group);
cma_deref_dev(cma_dev);
return &cma_dev_group->device_group;
diff --git a/drivers/target/iscsi/iscsi_target_configfs.c b/drivers/target/iscsi/iscsi_target_configfs.c
index 2f821de..a24443b 100644
--- a/drivers/target/iscsi/iscsi_target_configfs.c
+++ b/drivers/target/iscsi/iscsi_target_configfs.c
@@ -771,21 +771,11 @@
{
struct iscsi_node_acl *acl =
container_of(se_nacl, struct iscsi_node_acl, se_node_acl);
- struct config_group *stats_cg = &se_nacl->acl_fabric_stat_group;
- stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
- GFP_KERNEL);
- if (!stats_cg->default_groups) {
- pr_err("Unable to allocate memory for"
- " stats_cg->default_groups\n");
- return -ENOMEM;
- }
-
- stats_cg->default_groups[0] = &acl->node_stat_grps.iscsi_sess_stats_group;
- stats_cg->default_groups[1] = NULL;
config_group_init_type_name(&acl->node_stat_grps.iscsi_sess_stats_group,
"iscsi_sess_stats", &iscsi_stat_sess_cit);
-
+ configfs_add_default_group(&acl->node_stat_grps.iscsi_sess_stats_group,
+ &se_nacl->acl_fabric_stat_group);
return 0;
}
@@ -793,17 +783,8 @@
{
struct iscsi_node_acl *acl = container_of(se_nacl,
struct iscsi_node_acl, se_node_acl);
- struct config_item *df_item;
- struct config_group *stats_cg;
- int i;
- stats_cg = &acl->se_node_acl.acl_fabric_stat_group;
- for (i = 0; stats_cg->default_groups[i]; i++) {
- df_item = &stats_cg->default_groups[i]->cg_item;
- stats_cg->default_groups[i] = NULL;
- config_item_put(df_item);
- }
- kfree(stats_cg->default_groups);
+ configfs_remove_default_groups(&acl->se_node_acl.acl_fabric_stat_group);
}
/* End items for lio_target_acl_cit */
@@ -1260,42 +1241,37 @@
struct config_group *group,
const char *name)
{
- struct config_group *stats_cg;
struct iscsi_tiqn *tiqn;
tiqn = iscsit_add_tiqn((unsigned char *)name);
if (IS_ERR(tiqn))
return ERR_CAST(tiqn);
- /*
- * Setup struct iscsi_wwn_stat_grps for se_wwn->fabric_stat_group.
- */
- stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
- stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6,
- GFP_KERNEL);
- if (!stats_cg->default_groups) {
- pr_err("Unable to allocate memory for"
- " stats_cg->default_groups\n");
- iscsit_del_tiqn(tiqn);
- return ERR_PTR(-ENOMEM);
- }
-
- stats_cg->default_groups[0] = &tiqn->tiqn_stat_grps.iscsi_instance_group;
- stats_cg->default_groups[1] = &tiqn->tiqn_stat_grps.iscsi_sess_err_group;
- stats_cg->default_groups[2] = &tiqn->tiqn_stat_grps.iscsi_tgt_attr_group;
- stats_cg->default_groups[3] = &tiqn->tiqn_stat_grps.iscsi_login_stats_group;
- stats_cg->default_groups[4] = &tiqn->tiqn_stat_grps.iscsi_logout_stats_group;
- stats_cg->default_groups[5] = NULL;
config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_instance_group,
"iscsi_instance", &iscsi_stat_instance_cit);
+ configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_instance_group,
+ &tiqn->tiqn_wwn.fabric_stat_group);
+
config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,
"iscsi_sess_err", &iscsi_stat_sess_err_cit);
+ configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,
+ &tiqn->tiqn_wwn.fabric_stat_group);
+
config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,
"iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);
+ configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,
+ &tiqn->tiqn_wwn.fabric_stat_group);
+
config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,
"iscsi_login_stats", &iscsi_stat_login_cit);
+ configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,
+ &tiqn->tiqn_wwn.fabric_stat_group);
+
config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,
"iscsi_logout_stats", &iscsi_stat_logout_cit);
+ configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,
+ &tiqn->tiqn_wwn.fabric_stat_group);
+
pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:"
@@ -1307,17 +1283,8 @@
struct se_wwn *wwn)
{
struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
- struct config_item *df_item;
- struct config_group *stats_cg;
- int i;
- stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
- for (i = 0; stats_cg->default_groups[i]; i++) {
- df_item = &stats_cg->default_groups[i]->cg_item;
- stats_cg->default_groups[i] = NULL;
- config_item_put(df_item);
- }
- kfree(stats_cg->default_groups);
+ configfs_remove_default_groups(&tiqn->tiqn_wwn.fabric_stat_group);
pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n",
tiqn->tiqn);
diff --git a/drivers/target/target_core_configfs.c b/drivers/target/target_core_configfs.c
index 713c63d9..d498533 100644
--- a/drivers/target/target_core_configfs.c
+++ b/drivers/target/target_core_configfs.c
@@ -194,13 +194,11 @@
pr_debug("Target_Core_ConfigFS: REGISTER tfc_wwn_cit -> %p\n",
&tf->tf_wwn_cit);
- tf->tf_group.default_groups = tf->tf_default_groups;
- tf->tf_group.default_groups[0] = &tf->tf_disc_group;
- tf->tf_group.default_groups[1] = NULL;
-
config_group_init_type_name(&tf->tf_group, name, &tf->tf_wwn_cit);
+
config_group_init_type_name(&tf->tf_disc_group, "discovery_auth",
&tf->tf_discovery_cit);
+ configfs_add_default_group(&tf->tf_disc_group, &tf->tf_group);
pr_debug("Target_Core_ConfigFS: REGISTER -> Allocated Fabric:"
" %s\n", tf->tf_group.cg_item.ci_name);
@@ -216,9 +214,6 @@
{
struct target_fabric_configfs *tf = container_of(
to_config_group(item), struct target_fabric_configfs, tf_group);
- struct config_group *tf_group;
- struct config_item *df_item;
- int i;
pr_debug("Target_Core_ConfigFS: DEREGISTER -> Looking up %s in"
" tf list\n", config_item_name(item));
@@ -230,12 +225,7 @@
pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing ci"
" %s\n", config_item_name(item));
- tf_group = &tf->tf_group;
- for (i = 0; tf_group->default_groups[i]; i++) {
- df_item = &tf_group->default_groups[i]->cg_item;
- tf_group->default_groups[i] = NULL;
- config_item_put(df_item);
- }
+ configfs_remove_default_groups(&tf->tf_group);
config_item_put(item);
}
@@ -2151,7 +2141,6 @@
struct se_device *dev =
container_of(dev_cg, struct se_device, dev_group);
- kfree(dev_cg->default_groups);
target_free_device(dev);
}
@@ -2819,8 +2808,6 @@
struct se_hba *hba = item_to_hba(hba_ci);
struct target_backend *tb = hba->backend;
struct se_device *dev;
- struct config_group *dev_cg = NULL, *tg_pt_gp_cg = NULL;
- struct config_group *dev_stat_grp = NULL;
int errno = -ENOMEM, ret;
ret = mutex_lock_interruptible(&hba->hba_access_mutex);
@@ -2831,73 +2818,52 @@
if (!dev)
goto out_unlock;
- dev_cg = &dev->dev_group;
+ config_group_init_type_name(&dev->dev_group, name, &tb->tb_dev_cit);
- dev_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6,
- GFP_KERNEL);
- if (!dev_cg->default_groups)
- goto out_free_device;
-
- config_group_init_type_name(dev_cg, name, &tb->tb_dev_cit);
config_group_init_type_name(&dev->dev_attrib.da_group, "attrib",
&tb->tb_dev_attrib_cit);
+ configfs_add_default_group(&dev->dev_attrib.da_group, &dev->dev_group);
+
config_group_init_type_name(&dev->dev_pr_group, "pr",
&tb->tb_dev_pr_cit);
+ configfs_add_default_group(&dev->dev_pr_group, &dev->dev_group);
+
config_group_init_type_name(&dev->t10_wwn.t10_wwn_group, "wwn",
&tb->tb_dev_wwn_cit);
+ configfs_add_default_group(&dev->t10_wwn.t10_wwn_group,
+ &dev->dev_group);
+
config_group_init_type_name(&dev->t10_alua.alua_tg_pt_gps_group,
"alua", &tb->tb_dev_alua_tg_pt_gps_cit);
+ configfs_add_default_group(&dev->t10_alua.alua_tg_pt_gps_group,
+ &dev->dev_group);
+
config_group_init_type_name(&dev->dev_stat_grps.stat_group,
"statistics", &tb->tb_dev_stat_cit);
+ configfs_add_default_group(&dev->dev_stat_grps.stat_group,
+ &dev->dev_group);
- dev_cg->default_groups[0] = &dev->dev_attrib.da_group;
- dev_cg->default_groups[1] = &dev->dev_pr_group;
- dev_cg->default_groups[2] = &dev->t10_wwn.t10_wwn_group;
- dev_cg->default_groups[3] = &dev->t10_alua.alua_tg_pt_gps_group;
- dev_cg->default_groups[4] = &dev->dev_stat_grps.stat_group;
- dev_cg->default_groups[5] = NULL;
/*
* Add core/$HBA/$DEV/alua/default_tg_pt_gp
*/
tg_pt_gp = core_alua_allocate_tg_pt_gp(dev, "default_tg_pt_gp", 1);
if (!tg_pt_gp)
- goto out_free_dev_cg_default_groups;
+ goto out_free_device;
dev->t10_alua.default_tg_pt_gp = tg_pt_gp;
- tg_pt_gp_cg = &dev->t10_alua.alua_tg_pt_gps_group;
- tg_pt_gp_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
- GFP_KERNEL);
- if (!tg_pt_gp_cg->default_groups) {
- pr_err("Unable to allocate tg_pt_gp_cg->"
- "default_groups\n");
- goto out_free_tg_pt_gp;
- }
-
config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group,
"default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit);
- tg_pt_gp_cg->default_groups[0] = &tg_pt_gp->tg_pt_gp_group;
- tg_pt_gp_cg->default_groups[1] = NULL;
+ configfs_add_default_group(&tg_pt_gp->tg_pt_gp_group,
+ &dev->t10_alua.alua_tg_pt_gps_group);
+
/*
* Add core/$HBA/$DEV/statistics/ default groups
*/
- dev_stat_grp = &dev->dev_stat_grps.stat_group;
- dev_stat_grp->default_groups = kmalloc(sizeof(struct config_group *) * 4,
- GFP_KERNEL);
- if (!dev_stat_grp->default_groups) {
- pr_err("Unable to allocate dev_stat_grp->default_groups\n");
- goto out_free_tg_pt_gp_cg_default_groups;
- }
target_stat_setup_dev_default_groups(dev);
mutex_unlock(&hba->hba_access_mutex);
- return dev_cg;
+ return &dev->dev_group;
-out_free_tg_pt_gp_cg_default_groups:
- kfree(tg_pt_gp_cg->default_groups);
-out_free_tg_pt_gp:
- core_alua_free_tg_pt_gp(tg_pt_gp);
-out_free_dev_cg_default_groups:
- kfree(dev_cg->default_groups);
out_free_device:
target_free_device(dev);
out_unlock:
@@ -2913,40 +2879,22 @@
struct se_device *dev =
container_of(dev_cg, struct se_device, dev_group);
struct se_hba *hba;
- struct config_item *df_item;
- struct config_group *tg_pt_gp_cg, *dev_stat_grp;
- int i;
hba = item_to_hba(&dev->se_hba->hba_group.cg_item);
mutex_lock(&hba->hba_access_mutex);
- dev_stat_grp = &dev->dev_stat_grps.stat_group;
- for (i = 0; dev_stat_grp->default_groups[i]; i++) {
- df_item = &dev_stat_grp->default_groups[i]->cg_item;
- dev_stat_grp->default_groups[i] = NULL;
- config_item_put(df_item);
- }
- kfree(dev_stat_grp->default_groups);
+ configfs_remove_default_groups(&dev->dev_stat_grps.stat_group);
+ configfs_remove_default_groups(&dev->t10_alua.alua_tg_pt_gps_group);
- tg_pt_gp_cg = &dev->t10_alua.alua_tg_pt_gps_group;
- for (i = 0; tg_pt_gp_cg->default_groups[i]; i++) {
- df_item = &tg_pt_gp_cg->default_groups[i]->cg_item;
- tg_pt_gp_cg->default_groups[i] = NULL;
- config_item_put(df_item);
- }
- kfree(tg_pt_gp_cg->default_groups);
/*
* core_alua_free_tg_pt_gp() is called from ->default_tg_pt_gp
* directly from target_core_alua_tg_pt_gp_release().
*/
dev->t10_alua.default_tg_pt_gp = NULL;
- for (i = 0; dev_cg->default_groups[i]; i++) {
- df_item = &dev_cg->default_groups[i]->cg_item;
- dev_cg->default_groups[i] = NULL;
- config_item_put(df_item);
- }
+ configfs_remove_default_groups(dev_cg);
+
/*
* se_dev is released from target_core_dev_item_ops->release()
*/
@@ -3141,8 +3089,6 @@
static int __init target_core_init_configfs(void)
{
- struct config_group *target_cg, *hba_cg = NULL, *alua_cg = NULL;
- struct config_group *lu_gp_cg = NULL;
struct configfs_subsystem *subsys = &target_core_fabrics;
struct t10_alua_lu_gp *lu_gp;
int ret;
@@ -3161,51 +3107,24 @@
* Create $CONFIGFS/target/core default group for HBA <-> Storage Object
* and ALUA Logical Unit Group and Target Port Group infrastructure.
*/
- target_cg = &subsys->su_group;
- target_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
- GFP_KERNEL);
- if (!target_cg->default_groups) {
- pr_err("Unable to allocate target_cg->default_groups\n");
- ret = -ENOMEM;
- goto out_global;
- }
+ config_group_init_type_name(&target_core_hbagroup, "core",
+ &target_core_cit);
+ configfs_add_default_group(&target_core_hbagroup, &subsys->su_group);
- config_group_init_type_name(&target_core_hbagroup,
- "core", &target_core_cit);
- target_cg->default_groups[0] = &target_core_hbagroup;
- target_cg->default_groups[1] = NULL;
/*
* Create ALUA infrastructure under /sys/kernel/config/target/core/alua/
*/
- hba_cg = &target_core_hbagroup;
- hba_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
- GFP_KERNEL);
- if (!hba_cg->default_groups) {
- pr_err("Unable to allocate hba_cg->default_groups\n");
- ret = -ENOMEM;
- goto out_global;
- }
- config_group_init_type_name(&alua_group,
- "alua", &target_core_alua_cit);
- hba_cg->default_groups[0] = &alua_group;
- hba_cg->default_groups[1] = NULL;
+ config_group_init_type_name(&alua_group, "alua", &target_core_alua_cit);
+ configfs_add_default_group(&alua_group, &target_core_hbagroup);
+
/*
* Add ALUA Logical Unit Group and Target Port Group ConfigFS
* groups under /sys/kernel/config/target/core/alua/
*/
- alua_cg = &alua_group;
- alua_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
- GFP_KERNEL);
- if (!alua_cg->default_groups) {
- pr_err("Unable to allocate alua_cg->default_groups\n");
- ret = -ENOMEM;
- goto out_global;
- }
+ config_group_init_type_name(&alua_lu_gps_group, "lu_gps",
+ &target_core_alua_lu_gps_cit);
+ configfs_add_default_group(&alua_lu_gps_group, &alua_group);
- config_group_init_type_name(&alua_lu_gps_group,
- "lu_gps", &target_core_alua_lu_gps_cit);
- alua_cg->default_groups[0] = &alua_lu_gps_group;
- alua_cg->default_groups[1] = NULL;
/*
* Add core/alua/lu_gps/default_lu_gp
*/
@@ -3215,20 +3134,12 @@
goto out_global;
}
- lu_gp_cg = &alua_lu_gps_group;
- lu_gp_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
- GFP_KERNEL);
- if (!lu_gp_cg->default_groups) {
- pr_err("Unable to allocate lu_gp_cg->default_groups\n");
- ret = -ENOMEM;
- goto out_global;
- }
-
config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp",
&target_core_alua_lu_gp_cit);
- lu_gp_cg->default_groups[0] = &lu_gp->lu_gp_group;
- lu_gp_cg->default_groups[1] = NULL;
+ configfs_add_default_group(&lu_gp->lu_gp_group, &alua_lu_gps_group);
+
default_lu_gp = lu_gp;
+
/*
* Register the target_core_mod subsystem with configfs.
*/
@@ -3267,55 +3178,21 @@
core_alua_free_lu_gp(default_lu_gp);
default_lu_gp = NULL;
}
- if (lu_gp_cg)
- kfree(lu_gp_cg->default_groups);
- if (alua_cg)
- kfree(alua_cg->default_groups);
- if (hba_cg)
- kfree(hba_cg->default_groups);
- kfree(target_cg->default_groups);
release_se_kmem_caches();
return ret;
}
static void __exit target_core_exit_configfs(void)
{
- struct config_group *hba_cg, *alua_cg, *lu_gp_cg;
- struct config_item *item;
- int i;
+ configfs_remove_default_groups(&alua_lu_gps_group);
+ configfs_remove_default_groups(&alua_group);
+ configfs_remove_default_groups(&target_core_hbagroup);
- lu_gp_cg = &alua_lu_gps_group;
- for (i = 0; lu_gp_cg->default_groups[i]; i++) {
- item = &lu_gp_cg->default_groups[i]->cg_item;
- lu_gp_cg->default_groups[i] = NULL;
- config_item_put(item);
- }
- kfree(lu_gp_cg->default_groups);
- lu_gp_cg->default_groups = NULL;
-
- alua_cg = &alua_group;
- for (i = 0; alua_cg->default_groups[i]; i++) {
- item = &alua_cg->default_groups[i]->cg_item;
- alua_cg->default_groups[i] = NULL;
- config_item_put(item);
- }
- kfree(alua_cg->default_groups);
- alua_cg->default_groups = NULL;
-
- hba_cg = &target_core_hbagroup;
- for (i = 0; hba_cg->default_groups[i]; i++) {
- item = &hba_cg->default_groups[i]->cg_item;
- hba_cg->default_groups[i] = NULL;
- config_item_put(item);
- }
- kfree(hba_cg->default_groups);
- hba_cg->default_groups = NULL;
/*
* We expect subsys->su_group.default_groups to be released
* by configfs subsystem provider logic..
*/
configfs_unregister_subsystem(&target_core_fabrics);
- kfree(target_core_fabrics.su_group.default_groups);
core_alua_free_lu_gp(default_lu_gp);
default_lu_gp = NULL;
diff --git a/drivers/target/target_core_fabric_configfs.c b/drivers/target/target_core_fabric_configfs.c
index f916d18..8caef31 100644
--- a/drivers/target/target_core_fabric_configfs.c
+++ b/drivers/target/target_core_fabric_configfs.c
@@ -273,18 +273,10 @@
struct se_portal_group *se_tpg = se_nacl->se_tpg;
struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
struct se_lun_acl *lacl = NULL;
- struct config_item *acl_ci;
- struct config_group *lacl_cg = NULL, *ml_stat_grp = NULL;
char *buf;
unsigned long long mapped_lun;
int ret = 0;
- acl_ci = &group->cg_item;
- if (!acl_ci) {
- pr_err("Unable to locatel acl_ci\n");
- return NULL;
- }
-
buf = kzalloc(strlen(name) + 1, GFP_KERNEL);
if (!buf) {
pr_err("Unable to allocate memory for name buf\n");
@@ -315,37 +307,19 @@
goto out;
}
- lacl_cg = &lacl->se_lun_group;
- lacl_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
- GFP_KERNEL);
- if (!lacl_cg->default_groups) {
- pr_err("Unable to allocate lacl_cg->default_groups\n");
- ret = -ENOMEM;
- goto out;
- }
-
config_group_init_type_name(&lacl->se_lun_group, name,
&tf->tf_tpg_mappedlun_cit);
+
config_group_init_type_name(&lacl->ml_stat_grps.stat_group,
"statistics", &tf->tf_tpg_mappedlun_stat_cit);
- lacl_cg->default_groups[0] = &lacl->ml_stat_grps.stat_group;
- lacl_cg->default_groups[1] = NULL;
+ configfs_add_default_group(&lacl->ml_stat_grps.stat_group,
+ &lacl->se_lun_group);
- ml_stat_grp = &lacl->ml_stat_grps.stat_group;
- ml_stat_grp->default_groups = kmalloc(sizeof(struct config_group *) * 3,
- GFP_KERNEL);
- if (!ml_stat_grp->default_groups) {
- pr_err("Unable to allocate ml_stat_grp->default_groups\n");
- ret = -ENOMEM;
- goto out;
- }
target_stat_setup_mappedlun_default_groups(lacl);
kfree(buf);
return &lacl->se_lun_group;
out:
- if (lacl_cg)
- kfree(lacl_cg->default_groups);
kfree(lacl);
kfree(buf);
return ERR_PTR(ret);
@@ -357,25 +331,9 @@
{
struct se_lun_acl *lacl = container_of(to_config_group(item),
struct se_lun_acl, se_lun_group);
- struct config_item *df_item;
- struct config_group *lacl_cg = NULL, *ml_stat_grp = NULL;
- int i;
- ml_stat_grp = &lacl->ml_stat_grps.stat_group;
- for (i = 0; ml_stat_grp->default_groups[i]; i++) {
- df_item = &ml_stat_grp->default_groups[i]->cg_item;
- ml_stat_grp->default_groups[i] = NULL;
- config_item_put(df_item);
- }
- kfree(ml_stat_grp->default_groups);
-
- lacl_cg = &lacl->se_lun_group;
- for (i = 0; lacl_cg->default_groups[i]; i++) {
- df_item = &lacl_cg->default_groups[i]->cg_item;
- lacl_cg->default_groups[i] = NULL;
- config_item_put(df_item);
- }
- kfree(lacl_cg->default_groups);
+ configfs_remove_default_groups(&lacl->ml_stat_grps.stat_group);
+ configfs_remove_default_groups(&lacl->se_lun_group);
config_item_put(item);
}
@@ -424,7 +382,6 @@
struct se_portal_group, tpg_acl_group);
struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
struct se_node_acl *se_nacl;
- struct config_group *nacl_cg;
se_nacl = core_tpg_add_initiator_node_acl(se_tpg, name);
if (IS_ERR(se_nacl))
@@ -438,24 +395,28 @@
}
}
- nacl_cg = &se_nacl->acl_group;
- nacl_cg->default_groups = se_nacl->acl_default_groups;
- nacl_cg->default_groups[0] = &se_nacl->acl_attrib_group;
- nacl_cg->default_groups[1] = &se_nacl->acl_auth_group;
- nacl_cg->default_groups[2] = &se_nacl->acl_param_group;
- nacl_cg->default_groups[3] = &se_nacl->acl_fabric_stat_group;
- nacl_cg->default_groups[4] = NULL;
-
config_group_init_type_name(&se_nacl->acl_group, name,
&tf->tf_tpg_nacl_base_cit);
+
config_group_init_type_name(&se_nacl->acl_attrib_group, "attrib",
&tf->tf_tpg_nacl_attrib_cit);
+ configfs_add_default_group(&se_nacl->acl_attrib_group,
+ &se_nacl->acl_group);
+
config_group_init_type_name(&se_nacl->acl_auth_group, "auth",
&tf->tf_tpg_nacl_auth_cit);
+ configfs_add_default_group(&se_nacl->acl_auth_group,
+ &se_nacl->acl_group);
+
config_group_init_type_name(&se_nacl->acl_param_group, "param",
&tf->tf_tpg_nacl_param_cit);
+ configfs_add_default_group(&se_nacl->acl_param_group,
+ &se_nacl->acl_group);
+
config_group_init_type_name(&se_nacl->acl_fabric_stat_group,
"fabric_statistics", &tf->tf_tpg_nacl_stat_cit);
+ configfs_add_default_group(&se_nacl->acl_fabric_stat_group,
+ &se_nacl->acl_group);
return &se_nacl->acl_group;
}
@@ -466,16 +427,9 @@
{
struct se_node_acl *se_nacl = container_of(to_config_group(item),
struct se_node_acl, acl_group);
- struct config_item *df_item;
- struct config_group *nacl_cg;
- int i;
- nacl_cg = &se_nacl->acl_group;
- for (i = 0; nacl_cg->default_groups[i]; i++) {
- df_item = &nacl_cg->default_groups[i]->cg_item;
- nacl_cg->default_groups[i] = NULL;
- config_item_put(df_item);
- }
+ configfs_remove_default_groups(&se_nacl->acl_group);
+
/*
* struct se_node_acl free is done in target_fabric_nacl_base_release()
*/
@@ -795,7 +749,6 @@
struct se_portal_group *se_tpg = container_of(group,
struct se_portal_group, tpg_lun_group);
struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
- struct config_group *lun_cg = NULL, *port_stat_grp = NULL;
unsigned long long unpacked_lun;
int errno;
@@ -812,31 +765,14 @@
if (IS_ERR(lun))
return ERR_CAST(lun);
- lun_cg = &lun->lun_group;
- lun_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
- GFP_KERNEL);
- if (!lun_cg->default_groups) {
- pr_err("Unable to allocate lun_cg->default_groups\n");
- kfree(lun);
- return ERR_PTR(-ENOMEM);
- }
-
config_group_init_type_name(&lun->lun_group, name,
&tf->tf_tpg_port_cit);
+
config_group_init_type_name(&lun->port_stat_grps.stat_group,
"statistics", &tf->tf_tpg_port_stat_cit);
- lun_cg->default_groups[0] = &lun->port_stat_grps.stat_group;
- lun_cg->default_groups[1] = NULL;
+ configfs_add_default_group(&lun->port_stat_grps.stat_group,
+ &lun->lun_group);
- port_stat_grp = &lun->port_stat_grps.stat_group;
- port_stat_grp->default_groups = kzalloc(sizeof(struct config_group *) * 4,
- GFP_KERNEL);
- if (!port_stat_grp->default_groups) {
- pr_err("Unable to allocate port_stat_grp->default_groups\n");
- kfree(lun_cg->default_groups);
- kfree(lun);
- return ERR_PTR(-ENOMEM);
- }
target_stat_setup_port_default_groups(lun);
return &lun->lun_group;
@@ -848,25 +784,9 @@
{
struct se_lun *lun = container_of(to_config_group(item),
struct se_lun, lun_group);
- struct config_item *df_item;
- struct config_group *lun_cg, *port_stat_grp;
- int i;
- port_stat_grp = &lun->port_stat_grps.stat_group;
- for (i = 0; port_stat_grp->default_groups[i]; i++) {
- df_item = &port_stat_grp->default_groups[i]->cg_item;
- port_stat_grp->default_groups[i] = NULL;
- config_item_put(df_item);
- }
- kfree(port_stat_grp->default_groups);
-
- lun_cg = &lun->lun_group;
- for (i = 0; lun_cg->default_groups[i]; i++) {
- df_item = &lun_cg->default_groups[i]->cg_item;
- lun_cg->default_groups[i] = NULL;
- config_item_put(df_item);
- }
- kfree(lun_cg->default_groups);
+ configfs_remove_default_groups(&lun->port_stat_grps.stat_group);
+ configfs_remove_default_groups(&lun->lun_group);
config_item_put(item);
}
@@ -922,32 +842,39 @@
se_tpg = tf->tf_ops->fabric_make_tpg(wwn, group, name);
if (!se_tpg || IS_ERR(se_tpg))
return ERR_PTR(-EINVAL);
- /*
- * Setup default groups from pre-allocated se_tpg->tpg_default_groups
- */
- se_tpg->tpg_group.default_groups = se_tpg->tpg_default_groups;
- se_tpg->tpg_group.default_groups[0] = &se_tpg->tpg_lun_group;
- se_tpg->tpg_group.default_groups[1] = &se_tpg->tpg_np_group;
- se_tpg->tpg_group.default_groups[2] = &se_tpg->tpg_acl_group;
- se_tpg->tpg_group.default_groups[3] = &se_tpg->tpg_attrib_group;
- se_tpg->tpg_group.default_groups[4] = &se_tpg->tpg_auth_group;
- se_tpg->tpg_group.default_groups[5] = &se_tpg->tpg_param_group;
- se_tpg->tpg_group.default_groups[6] = NULL;
config_group_init_type_name(&se_tpg->tpg_group, name,
&tf->tf_tpg_base_cit);
+
config_group_init_type_name(&se_tpg->tpg_lun_group, "lun",
&tf->tf_tpg_lun_cit);
+ configfs_add_default_group(&se_tpg->tpg_lun_group,
+ &se_tpg->tpg_group);
+
config_group_init_type_name(&se_tpg->tpg_np_group, "np",
&tf->tf_tpg_np_cit);
+ configfs_add_default_group(&se_tpg->tpg_np_group,
+ &se_tpg->tpg_group);
+
config_group_init_type_name(&se_tpg->tpg_acl_group, "acls",
&tf->tf_tpg_nacl_cit);
+ configfs_add_default_group(&se_tpg->tpg_acl_group,
+ &se_tpg->tpg_group);
+
config_group_init_type_name(&se_tpg->tpg_attrib_group, "attrib",
&tf->tf_tpg_attrib_cit);
+ configfs_add_default_group(&se_tpg->tpg_attrib_group,
+ &se_tpg->tpg_group);
+
config_group_init_type_name(&se_tpg->tpg_auth_group, "auth",
&tf->tf_tpg_auth_cit);
+ configfs_add_default_group(&se_tpg->tpg_auth_group,
+ &se_tpg->tpg_group);
+
config_group_init_type_name(&se_tpg->tpg_param_group, "param",
&tf->tf_tpg_param_cit);
+ configfs_add_default_group(&se_tpg->tpg_param_group,
+ &se_tpg->tpg_group);
return &se_tpg->tpg_group;
}
@@ -958,19 +885,8 @@
{
struct se_portal_group *se_tpg = container_of(to_config_group(item),
struct se_portal_group, tpg_group);
- struct config_group *tpg_cg = &se_tpg->tpg_group;
- struct config_item *df_item;
- int i;
- /*
- * Release default groups, but do not release tpg_cg->default_groups
- * memory as it is statically allocated at se_tpg->tpg_default_groups.
- */
- for (i = 0; tpg_cg->default_groups[i]; i++) {
- df_item = &tpg_cg->default_groups[i]->cg_item;
- tpg_cg->default_groups[i] = NULL;
- config_item_put(df_item);
- }
+ configfs_remove_default_groups(&se_tpg->tpg_group);
config_item_put(item);
}
@@ -1026,16 +942,12 @@
return ERR_PTR(-EINVAL);
wwn->wwn_tf = tf;
- /*
- * Setup default groups from pre-allocated wwn->wwn_default_groups
- */
- wwn->wwn_group.default_groups = wwn->wwn_default_groups;
- wwn->wwn_group.default_groups[0] = &wwn->fabric_stat_group;
- wwn->wwn_group.default_groups[1] = NULL;
config_group_init_type_name(&wwn->wwn_group, name, &tf->tf_tpg_cit);
+
config_group_init_type_name(&wwn->fabric_stat_group, "fabric_statistics",
&tf->tf_wwn_fabric_stats_cit);
+ configfs_add_default_group(&wwn->fabric_stat_group, &wwn->wwn_group);
return &wwn->wwn_group;
}
@@ -1046,16 +958,8 @@
{
struct se_wwn *wwn = container_of(to_config_group(item),
struct se_wwn, wwn_group);
- struct config_item *df_item;
- struct config_group *cg = &wwn->wwn_group;
- int i;
- for (i = 0; cg->default_groups[i]; i++) {
- df_item = &cg->default_groups[i]->cg_item;
- cg->default_groups[i] = NULL;
- config_item_put(df_item);
- }
-
+ configfs_remove_default_groups(&wwn->wwn_group);
config_item_put(item);
}
diff --git a/drivers/target/target_core_internal.h b/drivers/target/target_core_internal.h
index db4412f..4a7cf49 100644
--- a/drivers/target/target_core_internal.h
+++ b/drivers/target/target_core_internal.h
@@ -22,7 +22,6 @@
struct list_head tf_list;
struct config_group tf_group;
struct config_group tf_disc_group;
- struct config_group *tf_default_groups[2];
const struct target_core_fabric_ops *tf_ops;
struct config_item_type tf_discovery_cit;
diff --git a/drivers/target/target_core_stat.c b/drivers/target/target_core_stat.c
index 81a6b3e..1a39033 100644
--- a/drivers/target/target_core_stat.c
+++ b/drivers/target/target_core_stat.c
@@ -407,19 +407,20 @@
*/
void target_stat_setup_dev_default_groups(struct se_device *dev)
{
- struct config_group *dev_stat_grp = &dev->dev_stat_grps.stat_group;
-
config_group_init_type_name(&dev->dev_stat_grps.scsi_dev_group,
"scsi_dev", &target_stat_scsi_dev_cit);
+ configfs_add_default_group(&dev->dev_stat_grps.scsi_dev_group,
+ &dev->dev_stat_grps.stat_group);
+
config_group_init_type_name(&dev->dev_stat_grps.scsi_tgt_dev_group,
"scsi_tgt_dev", &target_stat_scsi_tgt_dev_cit);
+ configfs_add_default_group(&dev->dev_stat_grps.scsi_tgt_dev_group,
+ &dev->dev_stat_grps.stat_group);
+
config_group_init_type_name(&dev->dev_stat_grps.scsi_lu_group,
"scsi_lu", &target_stat_scsi_lu_cit);
-
- dev_stat_grp->default_groups[0] = &dev->dev_stat_grps.scsi_dev_group;
- dev_stat_grp->default_groups[1] = &dev->dev_stat_grps.scsi_tgt_dev_group;
- dev_stat_grp->default_groups[2] = &dev->dev_stat_grps.scsi_lu_group;
- dev_stat_grp->default_groups[3] = NULL;
+ configfs_add_default_group(&dev->dev_stat_grps.scsi_lu_group,
+ &dev->dev_stat_grps.stat_group);
}
/*
@@ -818,19 +819,20 @@
*/
void target_stat_setup_port_default_groups(struct se_lun *lun)
{
- struct config_group *port_stat_grp = &lun->port_stat_grps.stat_group;
-
config_group_init_type_name(&lun->port_stat_grps.scsi_port_group,
"scsi_port", &target_stat_scsi_port_cit);
+ configfs_add_default_group(&lun->port_stat_grps.scsi_port_group,
+ &lun->port_stat_grps.stat_group);
+
config_group_init_type_name(&lun->port_stat_grps.scsi_tgt_port_group,
"scsi_tgt_port", &target_stat_scsi_tgt_port_cit);
+ configfs_add_default_group(&lun->port_stat_grps.scsi_tgt_port_group,
+ &lun->port_stat_grps.stat_group);
+
config_group_init_type_name(&lun->port_stat_grps.scsi_transport_group,
"scsi_transport", &target_stat_scsi_transport_cit);
-
- port_stat_grp->default_groups[0] = &lun->port_stat_grps.scsi_port_group;
- port_stat_grp->default_groups[1] = &lun->port_stat_grps.scsi_tgt_port_group;
- port_stat_grp->default_groups[2] = &lun->port_stat_grps.scsi_transport_group;
- port_stat_grp->default_groups[3] = NULL;
+ configfs_add_default_group(&lun->port_stat_grps.scsi_transport_group,
+ &lun->port_stat_grps.stat_group);
}
/*
@@ -1351,14 +1353,13 @@
*/
void target_stat_setup_mappedlun_default_groups(struct se_lun_acl *lacl)
{
- struct config_group *ml_stat_grp = &lacl->ml_stat_grps.stat_group;
-
config_group_init_type_name(&lacl->ml_stat_grps.scsi_auth_intr_group,
"scsi_auth_intr", &target_stat_scsi_auth_intr_cit);
+ configfs_add_default_group(&lacl->ml_stat_grps.scsi_auth_intr_group,
+ &lacl->ml_stat_grps.stat_group);
+
config_group_init_type_name(&lacl->ml_stat_grps.scsi_att_intr_port_group,
"scsi_att_intr_port", &target_stat_scsi_att_intr_port_cit);
-
- ml_stat_grp->default_groups[0] = &lacl->ml_stat_grps.scsi_auth_intr_group;
- ml_stat_grp->default_groups[1] = &lacl->ml_stat_grps.scsi_att_intr_port_group;
- ml_stat_grp->default_groups[2] = NULL;
+ configfs_add_default_group(&lacl->ml_stat_grps.scsi_att_intr_port_group,
+ &lacl->ml_stat_grps.stat_group);
}
diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c
index 590c449..2f8081f 100644
--- a/drivers/usb/gadget/configfs.c
+++ b/drivers/usb/gadget/configfs.c
@@ -49,7 +49,6 @@
struct config_group configs_group;
struct config_group strings_group;
struct config_group os_desc_group;
- struct config_group *default_groups[5];
struct mutex lock;
struct usb_gadget_strings *gstrings[MAX_USB_STRING_LANGS + 1];
@@ -71,7 +70,6 @@
struct config_usb_cfg {
struct config_group group;
struct config_group strings_group;
- struct config_group *default_groups[2];
struct list_head string_list;
struct usb_configuration c;
struct list_head func_list;
@@ -666,13 +664,12 @@
INIT_LIST_HEAD(&cfg->string_list);
INIT_LIST_HEAD(&cfg->func_list);
- cfg->group.default_groups = cfg->default_groups;
- cfg->default_groups[0] = &cfg->strings_group;
-
config_group_init_type_name(&cfg->group, name,
&gadget_config_type);
+
config_group_init_type_name(&cfg->strings_group, "strings",
&gadget_config_name_strings_type);
+ configfs_add_default_group(&cfg->strings_group, &cfg->group);
ret = usb_add_config_only(&gi->cdev, &cfg->c);
if (ret)
@@ -1149,15 +1146,11 @@
char **names,
struct module *owner)
{
- struct config_group **f_default_groups, *os_desc_group,
- **interface_groups;
+ struct config_group *os_desc_group;
struct config_item_type *os_desc_type, *interface_type;
vla_group(data_chunk);
- vla_item(data_chunk, struct config_group *, f_default_groups, 2);
vla_item(data_chunk, struct config_group, os_desc_group, 1);
- vla_item(data_chunk, struct config_group *, interface_groups,
- n_interf + 1);
vla_item(data_chunk, struct config_item_type, os_desc_type, 1);
vla_item(data_chunk, struct config_item_type, interface_type, 1);
@@ -1165,18 +1158,14 @@
if (!vlabuf)
return -ENOMEM;
- f_default_groups = vla_ptr(vlabuf, data_chunk, f_default_groups);
os_desc_group = vla_ptr(vlabuf, data_chunk, os_desc_group);
os_desc_type = vla_ptr(vlabuf, data_chunk, os_desc_type);
- interface_groups = vla_ptr(vlabuf, data_chunk, interface_groups);
interface_type = vla_ptr(vlabuf, data_chunk, interface_type);
- parent->default_groups = f_default_groups;
os_desc_type->ct_owner = owner;
config_group_init_type_name(os_desc_group, "os_desc", os_desc_type);
- f_default_groups[0] = os_desc_group;
+ configfs_add_default_group(os_desc_group, parent);
- os_desc_group->default_groups = interface_groups;
interface_type->ct_group_ops = &interf_grp_ops;
interface_type->ct_attrs = interf_grp_attrs;
interface_type->ct_owner = owner;
@@ -1189,7 +1178,7 @@
config_group_init_type_name(&d->group, "", interface_type);
config_item_set_name(&d->group.cg_item, "interface.%s",
names[n_interf]);
- interface_groups[n_interf] = &d->group;
+ configfs_add_default_group(&d->group, os_desc_group);
}
return 0;
@@ -1423,20 +1412,23 @@
if (!gi)
return ERR_PTR(-ENOMEM);
- gi->group.default_groups = gi->default_groups;
- gi->group.default_groups[0] = &gi->functions_group;
- gi->group.default_groups[1] = &gi->configs_group;
- gi->group.default_groups[2] = &gi->strings_group;
- gi->group.default_groups[3] = &gi->os_desc_group;
+ config_group_init_type_name(&gi->group, name, &gadget_root_type);
config_group_init_type_name(&gi->functions_group, "functions",
&functions_type);
+ configfs_add_default_group(&gi->functions_group, &gi->group);
+
config_group_init_type_name(&gi->configs_group, "configs",
&config_desc_type);
+ configfs_add_default_group(&gi->configs_group, &gi->group);
+
config_group_init_type_name(&gi->strings_group, "strings",
&gadget_strings_strings_type);
+ configfs_add_default_group(&gi->strings_group, &gi->group);
+
config_group_init_type_name(&gi->os_desc_group, "os_desc",
&os_desc_type);
+ configfs_add_default_group(&gi->os_desc_group, &gi->group);
gi->composite.bind = configfs_do_nothing;
gi->composite.unbind = configfs_do_nothing;
@@ -1461,8 +1453,6 @@
if (!gi->composite.gadget_driver.function)
goto err;
- config_group_init_type_name(&gi->group, name,
- &gadget_root_type);
return &gi->group;
err:
kfree(gi);
diff --git a/drivers/usb/gadget/function/f_mass_storage.c b/drivers/usb/gadget/function/f_mass_storage.c
index 223ccf8..142bb77 100644
--- a/drivers/usb/gadget/function/f_mass_storage.c
+++ b/drivers/usb/gadget/function/f_mass_storage.c
@@ -3484,12 +3484,12 @@
opts->lun0.lun = opts->common->luns[0];
opts->lun0.lun_id = 0;
- config_group_init_type_name(&opts->lun0.group, "lun.0", &fsg_lun_type);
- opts->default_groups[0] = &opts->lun0.group;
- opts->func_inst.group.default_groups = opts->default_groups;
config_group_init_type_name(&opts->func_inst.group, "", &fsg_func_type);
+ config_group_init_type_name(&opts->lun0.group, "lun.0", &fsg_lun_type);
+ configfs_add_default_group(&opts->lun0.group, &opts->func_inst.group);
+
return &opts->func_inst;
release_buffers:
diff --git a/drivers/usb/gadget/function/f_rndis.c b/drivers/usb/gadget/function/f_rndis.c
index e587767..f577eec 100644
--- a/drivers/usb/gadget/function/f_rndis.c
+++ b/drivers/usb/gadget/function/f_rndis.c
@@ -889,7 +889,6 @@
free_netdev(opts->net);
}
- kfree(opts->rndis_os_desc.group.default_groups); /* single VLA chunk */
kfree(opts);
}
@@ -916,10 +915,10 @@
descs[0] = &opts->rndis_os_desc;
names[0] = "rndis";
- usb_os_desc_prepare_interf_dir(&opts->func_inst.group, 1, descs,
- names, THIS_MODULE);
config_group_init_type_name(&opts->func_inst.group, "",
&rndis_func_type);
+ usb_os_desc_prepare_interf_dir(&opts->func_inst.group, 1, descs,
+ names, THIS_MODULE);
return &opts->func_inst;
}
diff --git a/drivers/usb/gadget/function/uvc_configfs.c b/drivers/usb/gadget/function/uvc_configfs.c
index ad8c9b0..66753ba 100644
--- a/drivers/usb/gadget/function/uvc_configfs.c
+++ b/drivers/usb/gadget/function/uvc_configfs.c
@@ -272,11 +272,6 @@
/* struct uvcg_processing {}; */
-static struct config_group *uvcg_processing_default_groups[] = {
- &uvcg_default_processing.group,
- NULL,
-};
-
/* control/processing */
static struct uvcg_processing_grp {
struct config_group group;
@@ -394,11 +389,6 @@
/* struct uvcg_camera {}; */
-static struct config_group *uvcg_camera_default_groups[] = {
- &uvcg_default_camera.group,
- NULL,
-};
-
/* control/terminal/camera */
static struct uvcg_camera_grp {
struct config_group group;
@@ -477,11 +467,6 @@
/* struct uvcg_output {}; */
-static struct config_group *uvcg_output_default_groups[] = {
- &uvcg_default_output.group,
- NULL,
-};
-
/* control/terminal/output */
static struct uvcg_output_grp {
struct config_group group;
@@ -491,12 +476,6 @@
.ct_owner = THIS_MODULE,
};
-static struct config_group *uvcg_terminal_default_groups[] = {
- &uvcg_camera_grp.group,
- &uvcg_output_grp.group,
- NULL,
-};
-
/* control/terminal */
static struct uvcg_terminal_grp {
struct config_group group;
@@ -619,12 +598,6 @@
.ct_owner = THIS_MODULE,
};
-static struct config_group *uvcg_control_class_default_groups[] = {
- &uvcg_control_class_fs.group,
- &uvcg_control_class_ss.group,
- NULL,
-};
-
/* control/class */
static struct uvcg_control_class_grp {
struct config_group group;
@@ -634,14 +607,6 @@
.ct_owner = THIS_MODULE,
};
-static struct config_group *uvcg_control_default_groups[] = {
- &uvcg_control_header_grp.group,
- &uvcg_processing_grp.group,
- &uvcg_terminal_grp.group,
- &uvcg_control_class_grp.group,
- NULL,
-};
-
/* control */
static struct uvcg_control_grp {
struct config_group group;
@@ -1780,11 +1745,6 @@
/* struct uvcg_color_matching {}; */
-static struct config_group *uvcg_color_matching_default_groups[] = {
- &uvcg_default_color_matching.group,
- NULL,
-};
-
/* streaming/color_matching */
static struct uvcg_color_matching_grp {
struct config_group group;
@@ -2145,13 +2105,6 @@
.ct_owner = THIS_MODULE,
};
-static struct config_group *uvcg_streaming_class_default_groups[] = {
- &uvcg_streaming_class_fs.group,
- &uvcg_streaming_class_hs.group,
- &uvcg_streaming_class_ss.group,
- NULL,
-};
-
/* streaming/class */
static struct uvcg_streaming_class_grp {
struct config_group group;
@@ -2161,15 +2114,6 @@
.ct_owner = THIS_MODULE,
};
-static struct config_group *uvcg_streaming_default_groups[] = {
- &uvcg_streaming_header_grp.group,
- &uvcg_uncompressed_grp.group,
- &uvcg_mjpeg_grp.group,
- &uvcg_color_matching_grp.group,
- &uvcg_streaming_class_grp.group,
- NULL,
-};
-
/* streaming */
static struct uvcg_streaming_grp {
struct config_group group;
@@ -2179,12 +2123,6 @@
.ct_owner = THIS_MODULE,
};
-static struct config_group *uvcg_default_groups[] = {
- &uvcg_control_grp.group,
- &uvcg_streaming_grp.group,
- NULL,
-};
-
static inline struct f_uvc_opts *to_f_uvc_opts(struct config_item *item)
{
return container_of(to_config_group(item), struct f_uvc_opts,
@@ -2273,59 +2211,64 @@
.ct_owner = THIS_MODULE,
};
-static inline void uvcg_init_group(struct config_group *g,
- struct config_group **default_groups,
- const char *name,
- struct config_item_type *type)
-{
- g->default_groups = default_groups;
- config_group_init_type_name(g, name, type);
-}
-
int uvcg_attach_configfs(struct f_uvc_opts *opts)
{
config_group_init_type_name(&uvcg_control_header_grp.group,
"header",
&uvcg_control_header_grp_type);
+
config_group_init_type_name(&uvcg_default_processing.group,
- "default",
- &uvcg_default_processing_type);
- uvcg_init_group(&uvcg_processing_grp.group,
- uvcg_processing_default_groups,
- "processing",
- &uvcg_processing_grp_type);
+ "default", &uvcg_default_processing_type);
+ config_group_init_type_name(&uvcg_processing_grp.group,
+ "processing", &uvcg_processing_grp_type);
+ configfs_add_default_group(&uvcg_default_processing.group,
+ &uvcg_processing_grp.group);
+
config_group_init_type_name(&uvcg_default_camera.group,
- "default",
- &uvcg_default_camera_type);
- uvcg_init_group(&uvcg_camera_grp.group,
- uvcg_camera_default_groups,
- "camera",
- &uvcg_camera_grp_type);
+ "default", &uvcg_default_camera_type);
+ config_group_init_type_name(&uvcg_camera_grp.group,
+ "camera", &uvcg_camera_grp_type);
+ configfs_add_default_group(&uvcg_default_camera.group,
+ &uvcg_camera_grp.group);
+
config_group_init_type_name(&uvcg_default_output.group,
- "default",
- &uvcg_default_output_type);
- uvcg_init_group(&uvcg_output_grp.group,
- uvcg_output_default_groups,
- "output",
- &uvcg_output_grp_type);
- uvcg_init_group(&uvcg_terminal_grp.group,
- uvcg_terminal_default_groups,
- "terminal",
- &uvcg_terminal_grp_type);
+ "default", &uvcg_default_output_type);
+ config_group_init_type_name(&uvcg_output_grp.group,
+ "output", &uvcg_output_grp_type);
+ configfs_add_default_group(&uvcg_default_output.group,
+ &uvcg_output_grp.group);
+
+ config_group_init_type_name(&uvcg_terminal_grp.group,
+ "terminal", &uvcg_terminal_grp_type);
+ configfs_add_default_group(&uvcg_camera_grp.group,
+ &uvcg_terminal_grp.group);
+ configfs_add_default_group(&uvcg_output_grp.group,
+ &uvcg_terminal_grp.group);
+
config_group_init_type_name(&uvcg_control_class_fs.group,
- "fs",
- &uvcg_control_class_type);
+ "fs", &uvcg_control_class_type);
config_group_init_type_name(&uvcg_control_class_ss.group,
- "ss",
- &uvcg_control_class_type);
- uvcg_init_group(&uvcg_control_class_grp.group,
- uvcg_control_class_default_groups,
+ "ss", &uvcg_control_class_type);
+ config_group_init_type_name(&uvcg_control_class_grp.group,
"class",
&uvcg_control_class_grp_type);
- uvcg_init_group(&uvcg_control_grp.group,
- uvcg_control_default_groups,
+ configfs_add_default_group(&uvcg_control_class_fs.group,
+ &uvcg_control_class_grp.group);
+ configfs_add_default_group(&uvcg_control_class_ss.group,
+ &uvcg_control_class_grp.group);
+
+ config_group_init_type_name(&uvcg_control_grp.group,
"control",
&uvcg_control_grp_type);
+ configfs_add_default_group(&uvcg_control_header_grp.group,
+ &uvcg_control_grp.group);
+ configfs_add_default_group(&uvcg_processing_grp.group,
+ &uvcg_control_grp.group);
+ configfs_add_default_group(&uvcg_terminal_grp.group,
+ &uvcg_control_grp.group);
+ configfs_add_default_group(&uvcg_control_class_grp.group,
+ &uvcg_control_grp.group);
+
config_group_init_type_name(&uvcg_streaming_header_grp.group,
"header",
&uvcg_streaming_header_grp_type);
@@ -2338,30 +2281,47 @@
config_group_init_type_name(&uvcg_default_color_matching.group,
"default",
&uvcg_default_color_matching_type);
- uvcg_init_group(&uvcg_color_matching_grp.group,
- uvcg_color_matching_default_groups,
+ config_group_init_type_name(&uvcg_color_matching_grp.group,
"color_matching",
&uvcg_color_matching_grp_type);
+ configfs_add_default_group(&uvcg_default_color_matching.group,
+ &uvcg_color_matching_grp.group);
+
config_group_init_type_name(&uvcg_streaming_class_fs.group,
- "fs",
- &uvcg_streaming_class_type);
+ "fs", &uvcg_streaming_class_type);
config_group_init_type_name(&uvcg_streaming_class_hs.group,
- "hs",
- &uvcg_streaming_class_type);
+ "hs", &uvcg_streaming_class_type);
config_group_init_type_name(&uvcg_streaming_class_ss.group,
- "ss",
- &uvcg_streaming_class_type);
- uvcg_init_group(&uvcg_streaming_class_grp.group,
- uvcg_streaming_class_default_groups,
- "class",
- &uvcg_streaming_class_grp_type);
- uvcg_init_group(&uvcg_streaming_grp.group,
- uvcg_streaming_default_groups,
- "streaming",
- &uvcg_streaming_grp_type);
- uvcg_init_group(&opts->func_inst.group,
- uvcg_default_groups,
+ "ss", &uvcg_streaming_class_type);
+ config_group_init_type_name(&uvcg_streaming_class_grp.group,
+ "class", &uvcg_streaming_class_grp_type);
+ configfs_add_default_group(&uvcg_streaming_class_fs.group,
+ &uvcg_streaming_class_grp.group);
+ configfs_add_default_group(&uvcg_streaming_class_hs.group,
+ &uvcg_streaming_class_grp.group);
+ configfs_add_default_group(&uvcg_streaming_class_ss.group,
+ &uvcg_streaming_class_grp.group);
+
+ config_group_init_type_name(&uvcg_streaming_grp.group,
+ "streaming", &uvcg_streaming_grp_type);
+ configfs_add_default_group(&uvcg_streaming_header_grp.group,
+ &uvcg_streaming_grp.group);
+ configfs_add_default_group(&uvcg_uncompressed_grp.group,
+ &uvcg_streaming_grp.group);
+ configfs_add_default_group(&uvcg_mjpeg_grp.group,
+ &uvcg_streaming_grp.group);
+ configfs_add_default_group(&uvcg_color_matching_grp.group,
+ &uvcg_streaming_grp.group);
+ configfs_add_default_group(&uvcg_streaming_class_grp.group,
+ &uvcg_streaming_grp.group);
+
+ config_group_init_type_name(&opts->func_inst.group,
"",
&uvc_func_type);
+ configfs_add_default_group(&uvcg_control_grp.group,
+ &opts->func_inst.group);
+ configfs_add_default_group(&uvcg_streaming_grp.group,
+ &opts->func_inst.group);
+
return 0;
}
diff --git a/fs/configfs/dir.c b/fs/configfs/dir.c
index f419519..b51ce67 100644
--- a/fs/configfs/dir.c
+++ b/fs/configfs/dir.c
@@ -701,23 +701,29 @@
{
struct config_group *new_group;
int ret = 0;
- int i;
- if (group->default_groups) {
- for (i = 0; group->default_groups[i]; i++) {
- new_group = group->default_groups[i];
-
- ret = create_default_group(group, new_group);
- if (ret) {
- detach_groups(group);
- break;
- }
+ list_for_each_entry(new_group, &group->default_groups, group_entry) {
+ ret = create_default_group(group, new_group);
+ if (ret) {
+ detach_groups(group);
+ break;
}
}
return ret;
}
+void configfs_remove_default_groups(struct config_group *group)
+{
+ struct config_group *g, *n;
+
+ list_for_each_entry_safe(g, n, &group->default_groups, group_entry) {
+ list_del(&g->group_entry);
+ config_item_put(&g->cg_item);
+ }
+}
+EXPORT_SYMBOL(configfs_remove_default_groups);
+
/*
* All of link_obj/unlink_obj/link_group/unlink_group require that
* subsys->su_mutex is held.
@@ -766,15 +772,10 @@
static void unlink_group(struct config_group *group)
{
- int i;
struct config_group *new_group;
- if (group->default_groups) {
- for (i = 0; group->default_groups[i]; i++) {
- new_group = group->default_groups[i];
- unlink_group(new_group);
- }
- }
+ list_for_each_entry(new_group, &group->default_groups, group_entry)
+ unlink_group(new_group);
group->cg_subsys = NULL;
unlink_obj(&group->cg_item);
@@ -782,7 +783,6 @@
static void link_group(struct config_group *parent_group, struct config_group *group)
{
- int i;
struct config_group *new_group;
struct configfs_subsystem *subsys = NULL; /* gcc is a turd */
@@ -796,12 +796,8 @@
BUG();
group->cg_subsys = subsys;
- if (group->default_groups) {
- for (i = 0; group->default_groups[i]; i++) {
- new_group = group->default_groups[i];
- link_group(group, new_group);
- }
- }
+ list_for_each_entry(new_group, &group->default_groups, group_entry)
+ link_group(group, new_group);
}
/*
diff --git a/fs/configfs/item.c b/fs/configfs/item.c
index b863a09..8b2a994 100644
--- a/fs/configfs/item.c
+++ b/fs/configfs/item.c
@@ -182,6 +182,7 @@
{
config_item_init(&group->cg_item);
INIT_LIST_HEAD(&group->cg_children);
+ INIT_LIST_HEAD(&group->default_groups);
}
EXPORT_SYMBOL(config_group_init);
diff --git a/fs/dlm/config.c b/fs/dlm/config.c
index 8e294fb..5191121 100644
--- a/fs/dlm/config.c
+++ b/fs/dlm/config.c
@@ -346,7 +346,6 @@
void *gps = NULL;
cl = kzalloc(sizeof(struct dlm_cluster), GFP_NOFS);
- gps = kcalloc(3, sizeof(struct config_group *), GFP_NOFS);
sps = kzalloc(sizeof(struct dlm_spaces), GFP_NOFS);
cms = kzalloc(sizeof(struct dlm_comms), GFP_NOFS);
@@ -357,10 +356,8 @@
config_group_init_type_name(&sps->ss_group, "spaces", &spaces_type);
config_group_init_type_name(&cms->cs_group, "comms", &comms_type);
- cl->group.default_groups = gps;
- cl->group.default_groups[0] = &sps->ss_group;
- cl->group.default_groups[1] = &cms->cs_group;
- cl->group.default_groups[2] = NULL;
+ configfs_add_default_group(&sps->ss_group, &cl->group);
+ configfs_add_default_group(&cms->cs_group, &cl->group);
cl->cl_tcp_port = dlm_config.ci_tcp_port;
cl->cl_buffer_size = dlm_config.ci_buffer_size;
@@ -383,7 +380,6 @@
fail:
kfree(cl);
- kfree(gps);
kfree(sps);
kfree(cms);
return ERR_PTR(-ENOMEM);
@@ -392,14 +388,8 @@
static void drop_cluster(struct config_group *g, struct config_item *i)
{
struct dlm_cluster *cl = config_item_to_cluster(i);
- struct config_item *tmp;
- int j;
- for (j = 0; cl->group.default_groups[j]; j++) {
- tmp = &cl->group.default_groups[j]->cg_item;
- cl->group.default_groups[j] = NULL;
- config_item_put(tmp);
- }
+ configfs_remove_default_groups(&cl->group);
space_list = NULL;
comm_list = NULL;
@@ -410,7 +400,6 @@
static void release_cluster(struct config_item *i)
{
struct dlm_cluster *cl = config_item_to_cluster(i);
- kfree(cl->group.default_groups);
kfree(cl);
}
@@ -418,21 +407,17 @@
{
struct dlm_space *sp = NULL;
struct dlm_nodes *nds = NULL;
- void *gps = NULL;
sp = kzalloc(sizeof(struct dlm_space), GFP_NOFS);
- gps = kcalloc(2, sizeof(struct config_group *), GFP_NOFS);
nds = kzalloc(sizeof(struct dlm_nodes), GFP_NOFS);
- if (!sp || !gps || !nds)
+ if (!sp || !nds)
goto fail;
config_group_init_type_name(&sp->group, name, &space_type);
- config_group_init_type_name(&nds->ns_group, "nodes", &nodes_type);
- sp->group.default_groups = gps;
- sp->group.default_groups[0] = &nds->ns_group;
- sp->group.default_groups[1] = NULL;
+ config_group_init_type_name(&nds->ns_group, "nodes", &nodes_type);
+ configfs_add_default_group(&nds->ns_group, &sp->group);
INIT_LIST_HEAD(&sp->members);
mutex_init(&sp->members_lock);
@@ -441,7 +426,6 @@
fail:
kfree(sp);
- kfree(gps);
kfree(nds);
return ERR_PTR(-ENOMEM);
}
@@ -449,24 +433,16 @@
static void drop_space(struct config_group *g, struct config_item *i)
{
struct dlm_space *sp = config_item_to_space(i);
- struct config_item *tmp;
- int j;
/* assert list_empty(&sp->members) */
- for (j = 0; sp->group.default_groups[j]; j++) {
- tmp = &sp->group.default_groups[j]->cg_item;
- sp->group.default_groups[j] = NULL;
- config_item_put(tmp);
- }
-
+ configfs_remove_default_groups(&sp->group);
config_item_put(i);
}
static void release_space(struct config_item *i)
{
struct dlm_space *sp = config_item_to_space(i);
- kfree(sp->group.default_groups);
kfree(sp);
}
diff --git a/fs/ocfs2/cluster/nodemanager.c b/fs/ocfs2/cluster/nodemanager.c
index ebe5438..b17d180 100644
--- a/fs/ocfs2/cluster/nodemanager.c
+++ b/fs/ocfs2/cluster/nodemanager.c
@@ -630,7 +630,6 @@
{
struct o2nm_cluster *cluster = to_o2nm_cluster(item);
- kfree(cluster->cl_group.default_groups);
kfree(cluster);
}
@@ -666,7 +665,6 @@
struct o2nm_cluster *cluster = NULL;
struct o2nm_node_group *ns = NULL;
struct config_group *o2hb_group = NULL, *ret = NULL;
- void *defs = NULL;
/* this runs under the parent dir's i_mutex; there can be only
* one caller in here at a time */
@@ -675,20 +673,18 @@
cluster = kzalloc(sizeof(struct o2nm_cluster), GFP_KERNEL);
ns = kzalloc(sizeof(struct o2nm_node_group), GFP_KERNEL);
- defs = kcalloc(3, sizeof(struct config_group *), GFP_KERNEL);
o2hb_group = o2hb_alloc_hb_set();
- if (cluster == NULL || ns == NULL || o2hb_group == NULL || defs == NULL)
+ if (cluster == NULL || ns == NULL || o2hb_group == NULL)
goto out;
config_group_init_type_name(&cluster->cl_group, name,
&o2nm_cluster_type);
+ configfs_add_default_group(&ns->ns_group, &cluster->cl_group);
+
config_group_init_type_name(&ns->ns_group, "node",
&o2nm_node_group_type);
+ configfs_add_default_group(o2hb_group, &cluster->cl_group);
- cluster->cl_group.default_groups = defs;
- cluster->cl_group.default_groups[0] = &ns->ns_group;
- cluster->cl_group.default_groups[1] = o2hb_group;
- cluster->cl_group.default_groups[2] = NULL;
rwlock_init(&cluster->cl_nodes_lock);
cluster->cl_node_ip_tree = RB_ROOT;
cluster->cl_reconnect_delay_ms = O2NET_RECONNECT_DELAY_MS_DEFAULT;
@@ -704,7 +700,6 @@
kfree(cluster);
kfree(ns);
o2hb_free_hb_set(o2hb_group);
- kfree(defs);
ret = ERR_PTR(-ENOMEM);
}
@@ -714,18 +709,11 @@
static void o2nm_cluster_group_drop_item(struct config_group *group, struct config_item *item)
{
struct o2nm_cluster *cluster = to_o2nm_cluster(item);
- int i;
- struct config_item *killme;
BUG_ON(o2nm_single_cluster != cluster);
o2nm_single_cluster = NULL;
- for (i = 0; cluster->cl_group.default_groups[i]; i++) {
- killme = &cluster->cl_group.default_groups[i]->cg_item;
- cluster->cl_group.default_groups[i] = NULL;
- config_item_put(killme);
- }
-
+ configfs_remove_default_groups(&cluster->cl_group);
config_item_put(item);
}
diff --git a/include/linux/configfs.h b/include/linux/configfs.h
index f8165c1..485fe55 100644
--- a/include/linux/configfs.h
+++ b/include/linux/configfs.h
@@ -96,7 +96,8 @@
struct config_item cg_item;
struct list_head cg_children;
struct configfs_subsystem *cg_subsys;
- struct config_group **default_groups;
+ struct list_head default_groups;
+ struct list_head group_entry;
};
extern void config_group_init(struct config_group *group);
@@ -123,6 +124,12 @@
const char *);
+static inline void configfs_add_default_group(struct config_group *new_group,
+ struct config_group *group)
+{
+ list_add_tail(&new_group->group_entry, &group->default_groups);
+}
+
struct configfs_attribute {
const char *ca_name;
struct module *ca_owner;
@@ -251,6 +258,8 @@
struct config_group *group);
void configfs_unregister_group(struct config_group *group);
+void configfs_remove_default_groups(struct config_group *group);
+
struct config_group *
configfs_register_default_group(struct config_group *parent_group,
const char *name,
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index e8c8c08..1b09cac 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -560,7 +560,6 @@
struct config_group acl_auth_group;
struct config_group acl_param_group;
struct config_group acl_fabric_stat_group;
- struct config_group *acl_default_groups[5];
struct list_head acl_list;
struct list_head acl_sess_list;
struct completion acl_free_comp;
@@ -887,7 +886,6 @@
const struct target_core_fabric_ops *se_tpg_tfo;
struct se_wwn *se_tpg_wwn;
struct config_group tpg_group;
- struct config_group *tpg_default_groups[7];
struct config_group tpg_lun_group;
struct config_group tpg_np_group;
struct config_group tpg_acl_group;
@@ -923,7 +921,6 @@
struct se_wwn {
struct target_fabric_configfs *wwn_tf;
struct config_group wwn_group;
- struct config_group *wwn_default_groups[2];
struct config_group fabric_stat_group;
};