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-rw-r--r--Documentation/filesystems/configfs/configfs_example.c4
-rw-r--r--drivers/net/netconsole.c2
-rw-r--r--fs/configfs/dir.c25
-rw-r--r--fs/dlm/config.c8
-rw-r--r--fs/ocfs2/cluster/heartbeat.c10
-rw-r--r--fs/ocfs2/cluster/nodemanager.c16
-rw-r--r--include/linux/configfs.h3
7 files changed, 31 insertions, 37 deletions
diff --git a/Documentation/filesystems/configfs/configfs_example.c b/Documentation/filesystems/configfs/configfs_example.c
index 25151fd5c2c..03964879170 100644
--- a/Documentation/filesystems/configfs/configfs_example.c
+++ b/Documentation/filesystems/configfs/configfs_example.c
@@ -279,7 +279,7 @@ static struct config_item *simple_children_make_item(struct config_group *group,
simple_child = kzalloc(sizeof(struct simple_child), GFP_KERNEL);
if (!simple_child)
- return NULL;
+ return ERR_PTR(-ENOMEM);
config_item_init_type_name(&simple_child->item, name,
@@ -366,7 +366,7 @@ static struct config_group *group_children_make_group(struct config_group *group
simple_children = kzalloc(sizeof(struct simple_children),
GFP_KERNEL);
if (!simple_children)
- return NULL;
+ return ERR_PTR(-ENOMEM);
config_group_init_type_name(&simple_children->group, name,
diff --git a/drivers/net/netconsole.c b/drivers/net/netconsole.c
index 665341e4305..e13966bb5f7 100644
--- a/drivers/net/netconsole.c
+++ b/drivers/net/netconsole.c
@@ -598,7 +598,7 @@ static struct config_item *make_netconsole_target(struct config_group *group,
nt = kzalloc(sizeof(*nt), GFP_KERNEL);
if (!nt) {
printk(KERN_ERR "netconsole: failed to allocate memory\n");
- return NULL;
+ return ERR_PTR(-ENOMEM);
}
nt->np.name = "netconsole";
diff --git a/fs/configfs/dir.c b/fs/configfs/dir.c
index 614e382a604..179589be063 100644
--- a/fs/configfs/dir.c
+++ b/fs/configfs/dir.c
@@ -1027,9 +1027,10 @@ EXPORT_SYMBOL(configfs_undepend_item);
static int configfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
{
- int ret, module_got = 0;
- struct config_group *group;
- struct config_item *item;
+ int ret = 0;
+ int module_got = 0;
+ struct config_group *group = NULL;
+ struct config_item *item = NULL;
struct config_item *parent_item;
struct configfs_subsystem *subsys;
struct configfs_dirent *sd;
@@ -1070,28 +1071,32 @@ static int configfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
snprintf(name, dentry->d_name.len + 1, "%s", dentry->d_name.name);
mutex_lock(&subsys->su_mutex);
- group = NULL;
- item = NULL;
if (type->ct_group_ops->make_group) {
group = type->ct_group_ops->make_group(to_config_group(parent_item), name);
- if (group) {
+ if (!group)
+ group = ERR_PTR(-ENOMEM);
+ if (!IS_ERR(group)) {
link_group(to_config_group(parent_item), group);
item = &group->cg_item;
- }
+ } else
+ ret = PTR_ERR(group);
} else {
item = type->ct_group_ops->make_item(to_config_group(parent_item), name);
- if (item)
+ if (!item)
+ item = ERR_PTR(-ENOMEM);
+ if (!IS_ERR(item))
link_obj(parent_item, item);
+ else
+ ret = PTR_ERR(item);
}
mutex_unlock(&subsys->su_mutex);
kfree(name);
- if (!item) {
+ if (ret) {
/*
* If item == NULL, then link_obj() was never called.
* There are no extra references to clean up.
*/
- ret = -ENOMEM;
goto out_put;
}
diff --git a/fs/dlm/config.c b/fs/dlm/config.c
index eac23bd288b..c4e7d721bd8 100644
--- a/fs/dlm/config.c
+++ b/fs/dlm/config.c
@@ -438,7 +438,7 @@ static struct config_group *make_cluster(struct config_group *g,
kfree(gps);
kfree(sps);
kfree(cms);
- return NULL;
+ return ERR_PTR(-ENOMEM);
}
static void drop_cluster(struct config_group *g, struct config_item *i)
@@ -495,7 +495,7 @@ static struct config_group *make_space(struct config_group *g, const char *name)
kfree(sp);
kfree(gps);
kfree(nds);
- return NULL;
+ return ERR_PTR(-ENOMEM);
}
static void drop_space(struct config_group *g, struct config_item *i)
@@ -528,7 +528,7 @@ static struct config_item *make_comm(struct config_group *g, const char *name)
cm = kzalloc(sizeof(struct comm), GFP_KERNEL);
if (!cm)
- return NULL;
+ return ERR_PTR(-ENOMEM);
config_item_init_type_name(&cm->item, name, &comm_type);
cm->nodeid = -1;
@@ -561,7 +561,7 @@ static struct config_item *make_node(struct config_group *g, const char *name)
nd = kzalloc(sizeof(struct node), GFP_KERNEL);
if (!nd)
- return NULL;
+ return ERR_PTR(-ENOMEM);
config_item_init_type_name(&nd->item, name, &node_type);
nd->nodeid = -1;
diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c
index f02ccb34604..7dce1612553 100644
--- a/fs/ocfs2/cluster/heartbeat.c
+++ b/fs/ocfs2/cluster/heartbeat.c
@@ -1493,24 +1493,18 @@ static struct config_item *o2hb_heartbeat_group_make_item(struct config_group *g
const char *name)
{
struct o2hb_region *reg = NULL;
- struct config_item *ret = NULL;
reg = kzalloc(sizeof(struct o2hb_region), GFP_KERNEL);
if (reg == NULL)
- goto out; /* ENOMEM */
+ return ERR_PTR(-ENOMEM);
config_item_init_type_name(&reg->hr_item, name, &o2hb_region_type);
- ret = &reg->hr_item;
-
spin_lock(&o2hb_live_lock);
list_add_tail(&reg->hr_all_item, &o2hb_all_regions);
spin_unlock(&o2hb_live_lock);
-out:
- if (ret == NULL)
- kfree(reg);
- return ret;
+ return &reg->hr_item;
}
static void o2hb_heartbeat_group_drop_item(struct config_group *group,
diff --git a/fs/ocfs2/cluster/nodemanager.c b/fs/ocfs2/cluster/nodemanager.c
index cfdb08b484e..816a3f61330 100644
--- a/fs/ocfs2/cluster/nodemanager.c
+++ b/fs/ocfs2/cluster/nodemanager.c
@@ -648,26 +648,19 @@ static struct config_item *o2nm_node_group_make_item(struct config_group *group,
const char *name)
{
struct o2nm_node *node = NULL;
- struct config_item *ret = NULL;
if (strlen(name) > O2NM_MAX_NAME_LEN)
- goto out; /* ENAMETOOLONG */
+ return ERR_PTR(-ENAMETOOLONG);
node = kzalloc(sizeof(struct o2nm_node), GFP_KERNEL);
if (node == NULL)
- goto out; /* ENOMEM */
+ return ERR_PTR(-ENOMEM);
strcpy(node->nd_name, name); /* use item.ci_namebuf instead? */
config_item_init_type_name(&node->nd_item, name, &o2nm_node_type);
spin_lock_init(&node->nd_lock);
- ret = &node->nd_item;
-
-out:
- if (ret == NULL)
- kfree(node);
-
- return ret;
+ return &node->nd_item;
}
static void o2nm_node_group_drop_item(struct config_group *group,
@@ -762,7 +755,7 @@ static struct config_group *o2nm_cluster_group_make_group(struct config_group *g
/* this runs under the parent dir's i_mutex; there can be only
* one caller in here at a time */
if (o2nm_single_cluster)
- goto out; /* ENOSPC */
+ return ERR_PTR(-ENOSPC);
cluster = kzalloc(sizeof(struct o2nm_cluster), GFP_KERNEL);
ns = kzalloc(sizeof(struct o2nm_node_group), GFP_KERNEL);
@@ -795,6 +788,7 @@ out:
kfree(ns);
o2hb_free_hb_set(o2hb_group);
kfree(defs);
+ ret = ERR_PTR(-ENOMEM);
}
return ret;
diff --git a/include/linux/configfs.h b/include/linux/configfs.h
index 3ae65b1bf90..d62c19ff041 100644
--- a/include/linux/configfs.h
+++ b/include/linux/configfs.h
@@ -148,7 +148,8 @@ struct configfs_attribute {
* items. If the item is a group, it may support mkdir(2).
* Groups supply one of make_group() and make_item(). If the
* group supports make_group(), one can create group children. If it
- * supports make_item(), one can create config_item children. If it has
+ * supports make_item(), one can create config_item children. make_group()
+ * and make_item() return ERR_PTR() on errors. If it has
* default_groups on group->default_groups, it has automatically created
* group children. default_groups may coexist alongsize make_group() or
* make_item(), but if the group wishes to have only default_groups