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kernfs: remove KERNFS_STATIC_NAME

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When a new kernfs node is created, KERNFS_STATIC_NAME is used to avoid
making a separate copy of its name.  It's currently only used for sysfs
attributes whose filenames are required to stay accessible and unchanged.
There are rare exceptions where these names are allocated and formatted
dynamically but for the vast majority of cases they're consts in the
rodata section.

Now that kernfs is converted to use kstrdup_const() and kfree_const(),
there's little point in keeping KERNFS_STATIC_NAME around.  Remove it.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Tejun Heo 2015-02-13 14:36:31 -08:00 • committed by Linus Torvalds
parent 75287a677b
commit dfeb0750b6
5 changed files with 12 additions and 23 deletions
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7
include/linux/kernfs.h
View file

@ -43,7 +43,6 @@ enum kernfs_node_flag {
KERNFS_HAS_SEQ_SHOW = 0x0040,
KERNFS_HAS_MMAP = 0x0080,
KERNFS_LOCKDEP = 0x0100,
KERNFS_STATIC_NAME = 0x0200,
KERNFS_SUICIDAL = 0x0400,
KERNFS_SUICIDED = 0x0800,
};
@ -291,7 +290,6 @@ struct kernfs_node *__kernfs_create_file(struct kernfs_node *parent,
umode_t mode, loff_t size,
const struct kernfs_ops *ops,
void *priv, const void *ns,
bool name_is_static,
struct lock_class_key *key);
struct kernfs_node *kernfs_create_link(struct kernfs_node *parent,
const char *name,
@ -369,8 +367,7 @@ kernfs_create_dir_ns(struct kernfs_node *parent, const char *name,
static inline struct kernfs_node *
__kernfs_create_file(struct kernfs_node *parent, const char *name,
umode_t mode, loff_t size, const struct kernfs_ops *ops,
void *priv, const void *ns, bool name_is_static,
struct lock_class_key *key)
void *priv, const void *ns, struct lock_class_key *key)
{ return ERR_PTR(-ENOSYS); }
static inline struct kernfs_node *
@ -439,7 +436,7 @@ kernfs_create_file_ns(struct kernfs_node *parent, const char *name,
key = (struct lock_class_key *)&ops->lockdep_key;
#endif
return __kernfs_create_file(parent, name, mode, size, ops, priv, ns,
false, key);
key);
}
static inline struct kernfs_node *