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configfs: make ci_type field, some pointers and function arguments const

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The ci_type field of the config_item structure do not modify the fields
of the config_item_type structure it points to. And the other pointers
initialized with ci_type do not modify the fields as well.
So, make the ci_type field and the pointers initialized with ci_type
as const.

Make the struct config_item_type *type function argument of functions
config_{item/group}_init_type_name const as the argument in both the
functions is only stored in the ci_type field of a config_item structure
which is now made const.
Make the argument of configfs_register_default_group const as it is
only passed to the argument of the function config_group_init_type_name
which is now const.

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Bhumika Goyal 2017-10-16 17:18:40 +02:00 committed by Christoph Hellwig
parent 84c43674f4
commit aa293583f0
4 changed files with 14 additions and 14 deletions
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10
fs/configfs/dir.c
View File

@ -584,7 +584,7 @@ static void detach_attrs(struct config_item * item)
static int populate_attrs(struct config_item *item)
{
struct config_item_type *t = item->ci_type;
const struct config_item_type *t = item->ci_type;
struct configfs_attribute *attr;
struct configfs_bin_attribute *bin_attr;
int error = 0;
@ -901,7 +901,7 @@ static void configfs_detach_group(struct config_item *item)
static void client_disconnect_notify(struct config_item *parent_item,
struct config_item *item)
{
struct config_item_type *type;
const struct config_item_type *type;
type = parent_item->ci_type;
BUG_ON(!type);
@ -920,7 +920,7 @@ static void client_disconnect_notify(struct config_item *parent_item,
static void client_drop_item(struct config_item *parent_item,
struct config_item *item)
{
struct config_item_type *type;
const struct config_item_type *type;
type = parent_item->ci_type;
BUG_ON(!type);
@ -1260,7 +1260,7 @@ static int configfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode
struct config_item *parent_item;
struct configfs_subsystem *subsys;
struct configfs_dirent *sd;
struct config_item_type *type;
const struct config_item_type *type;
struct module *subsys_owner = NULL, *new_item_owner = NULL;
char *name;
@ -1810,7 +1810,7 @@ EXPORT_SYMBOL(configfs_unregister_group);
struct config_group *
configfs_register_default_group(struct config_group *parent_group,
const char *name,
struct config_item_type *item_type)
const struct config_item_type *item_type)
{
int ret;
struct config_group *group;

6
fs/configfs/item.c
View File

@ -113,7 +113,7 @@ EXPORT_SYMBOL(config_item_set_name);
void config_item_init_type_name(struct config_item *item,
const char *name,
struct config_item_type *type)
const struct config_item_type *type)
{
config_item_set_name(item, "%s", name);
item->ci_type = type;
@ -122,7 +122,7 @@ void config_item_init_type_name(struct config_item *item,
EXPORT_SYMBOL(config_item_init_type_name);
void config_group_init_type_name(struct config_group *group, const char *name,
struct config_item_type *type)
const struct config_item_type *type)
{
config_item_set_name(&group->cg_item, "%s", name);
group->cg_item.ci_type = type;
@ -148,7 +148,7 @@ EXPORT_SYMBOL(config_item_get_unless_zero);
static void config_item_cleanup(struct config_item *item)
{
struct config_item_type *t = item->ci_type;
const struct config_item_type *t = item->ci_type;
struct config_group *s = item->ci_group;
struct config_item *parent = item->ci_parent;

4
fs/configfs/symlink.c
View File

@ -138,7 +138,7 @@ int configfs_symlink(struct inode *dir, struct dentry *dentry, const char *symna
struct configfs_dirent *sd;
struct config_item *parent_item;
struct config_item *target_item = NULL;
struct config_item_type *type;
const struct config_item_type *type;
sd = dentry->d_parent->d_fsdata;
/*
@ -186,7 +186,7 @@ int configfs_unlink(struct inode *dir, struct dentry *dentry)
struct configfs_dirent *sd = dentry->d_fsdata;
struct configfs_symlink *sl;
struct config_item *parent_item;
struct config_item_type *type;
const struct config_item_type *type;
int ret;
ret = -EPERM; /* What lack-of-symlink returns */

8
include/linux/configfs.h
View File

@ -58,7 +58,7 @@ struct config_item {
struct list_head ci_entry;
struct config_item *ci_parent;
struct config_group *ci_group;
struct config_item_type *ci_type;
const struct config_item_type *ci_type;
struct dentry *ci_dentry;
};
@ -72,7 +72,7 @@ static inline char *config_item_name(struct config_item * item)
extern void config_item_init_type_name(struct config_item *item,
const char *name,
struct config_item_type *type);
const struct config_item_type *type);
extern struct config_item *config_item_get(struct config_item *);
extern struct config_item *config_item_get_unless_zero(struct config_item *);
@ -101,7 +101,7 @@ struct config_group {
extern void config_group_init(struct config_group *group);
extern void config_group_init_type_name(struct config_group *group,
const char *name,
struct config_item_type *type);
const struct config_item_type *type);
static inline struct config_group *to_config_group(struct config_item *item)
{
@ -261,7 +261,7 @@ void configfs_remove_default_groups(struct config_group *group);
struct config_group *
configfs_register_default_group(struct config_group *parent_group,
const char *name,
struct config_item_type *item_type);
const struct config_item_type *item_type);
void configfs_unregister_default_group(struct config_group *group);
/* These functions can sleep and can alloc with GFP_KERNEL */