kernfs: move the last knowledge of sysfs out from kernfs
There is still one residue of sysfs remaining: the sb_magic
SYSFS_MAGIC. However this should be kernfs user specific,
so this patch moves it out. Kerrnfs user should specify their
magic number while mouting.
Signed-off-by: Jianyu Zhan <nasa4836@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/include/linux/kernfs.h b/include/linux/kernfs.h
index c841688..17aa1cc 100644
--- a/include/linux/kernfs.h
+++ b/include/linux/kernfs.h
@@ -301,8 +301,8 @@
const void *kernfs_super_ns(struct super_block *sb);
struct dentry *kernfs_mount_ns(struct file_system_type *fs_type, int flags,
- struct kernfs_root *root, bool *new_sb_created,
- const void *ns);
+ struct kernfs_root *root, unsigned long magic,
+ bool *new_sb_created, const void *ns);
void kernfs_kill_sb(struct super_block *sb);
void kernfs_init(void);
@@ -395,7 +395,8 @@
static inline struct dentry *
kernfs_mount_ns(struct file_system_type *fs_type, int flags,
- struct kernfs_root *root, bool *new_sb_created, const void *ns)
+ struct kernfs_root *root, unsigned long magic,
+ bool *new_sb_created, const void *ns)
{ return ERR_PTR(-ENOSYS); }
static inline void kernfs_kill_sb(struct super_block *sb) { }
@@ -453,9 +454,11 @@
static inline struct dentry *
kernfs_mount(struct file_system_type *fs_type, int flags,
- struct kernfs_root *root, bool *new_sb_created)
+ struct kernfs_root *root, unsigned long magic,
+ bool *new_sb_created)
{
- return kernfs_mount_ns(fs_type, flags, root, new_sb_created, NULL);
+ return kernfs_mount_ns(fs_type, flags, root,
+ magic, new_sb_created, NULL);
}
#endif /* __LINUX_KERNFS_H */