diff options
Diffstat (limited to 'fs/kernfs')
| -rw-r--r-- | fs/kernfs/dir.c | 15 | ||||
| -rw-r--r-- | fs/kernfs/kernfs-internal.h | 85 |
2 files changed, 1 insertions, 99 deletions
diff --git a/fs/kernfs/dir.c b/fs/kernfs/dir.c index eaffa83..7c5b517 100644 --- a/fs/kernfs/dir.c +++ b/fs/kernfs/dir.c @@ -895,21 +895,6 @@ int kernfs_rename_ns(struct sysfs_dirent *sd, struct sysfs_dirent *new_parent, return error; } -/** - * kernfs_enable_ns - enable namespace under a directory - * @sd: directory of interest, should be empty - * - * This is to be called right after @sd is created to enable namespace - * under it. All children of @sd must have non-NULL namespace tags and - * only the ones which match the super_block's tag will be visible. - */ -void kernfs_enable_ns(struct sysfs_dirent *sd) -{ - WARN_ON_ONCE(sysfs_type(sd) != SYSFS_DIR); - WARN_ON_ONCE(!RB_EMPTY_ROOT(&sd->s_dir.children)); - sd->s_flags |= SYSFS_FLAG_NS; -} - /* Relationship between s_mode and the DT_xxx types */ static inline unsigned char dt_type(struct sysfs_dirent *sd) { diff --git a/fs/kernfs/kernfs-internal.h b/fs/kernfs/kernfs-internal.h index ced0d6d..f33a784 100644 --- a/fs/kernfs/kernfs-internal.h +++ b/fs/kernfs/kernfs-internal.h @@ -13,102 +13,19 @@ #include <linux/lockdep.h> #include <linux/fs.h> -#include <linux/rbtree.h> #include <linux/mutex.h> #include <linux/kernfs.h> -struct sysfs_open_dirent; - -/* type-specific structures for sysfs_dirent->s_* union members */ -struct sysfs_elem_dir { - unsigned long subdirs; - /* children rbtree starts here and goes through sd->s_rb */ - struct rb_root children; - - /* - * The kernfs hierarchy this directory belongs to. This fits - * better directly in sysfs_dirent but is here to save space. - */ - struct kernfs_root *root; -}; - -struct sysfs_elem_symlink { - struct sysfs_dirent *target_sd; -}; - -struct sysfs_elem_attr { - const struct kernfs_ops *ops; - struct sysfs_open_dirent *open; - loff_t size; -}; - struct sysfs_inode_attrs { struct iattr ia_iattr; void *ia_secdata; u32 ia_secdata_len; }; -/* - * sysfs_dirent - the building block of sysfs hierarchy. Each and - * every sysfs node is represented by single sysfs_dirent. - * - * As long as s_count reference is held, the sysfs_dirent itself is - * accessible. Dereferencing s_elem or any other outer entity - * requires s_active reference. - */ -struct sysfs_dirent { - atomic_t s_count; - atomic_t s_active; -#ifdef CONFIG_DEBUG_LOCK_ALLOC - struct lockdep_map dep_map; -#endif - struct sysfs_dirent *s_parent; - const char *s_name; - - struct rb_node s_rb; - - union { - struct completion *completion; - struct sysfs_dirent *removed_list; - } u; - - const void *s_ns; /* namespace tag */ - unsigned int s_hash; /* ns + name hash */ - union { - struct sysfs_elem_dir s_dir; - struct sysfs_elem_symlink s_symlink; - struct sysfs_elem_attr s_attr; - }; - - void *priv; - - unsigned short s_flags; - umode_t s_mode; - unsigned int s_ino; - struct sysfs_inode_attrs *s_iattr; -}; - #define SD_DEACTIVATED_BIAS INT_MIN -#define SYSFS_TYPE_MASK 0x000f -#define SYSFS_DIR 0x0001 -#define SYSFS_KOBJ_ATTR 0x0002 -#define SYSFS_KOBJ_LINK 0x0004 -#define SYSFS_COPY_NAME (SYSFS_DIR | SYSFS_KOBJ_LINK) -#define SYSFS_ACTIVE_REF SYSFS_KOBJ_ATTR - -#define SYSFS_FLAG_MASK ~SYSFS_TYPE_MASK -#define SYSFS_FLAG_REMOVED 0x0010 -#define SYSFS_FLAG_NS 0x0020 -#define SYSFS_FLAG_HAS_SEQ_SHOW 0x0040 -#define SYSFS_FLAG_HAS_MMAP 0x0080 -#define SYSFS_FLAG_LOCKDEP 0x0100 - -static inline unsigned int sysfs_type(struct sysfs_dirent *sd) -{ - return sd->s_flags & SYSFS_TYPE_MASK; -} +/* SYSFS_TYPE_MASK and types are defined in include/linux/kernfs.h */ /** * kernfs_root - find out the kernfs_root a sysfs_dirent belongs to |
