kernfs: s/sysfs/kernfs/ in constants

kernfs has just been separated out from sysfs and we're already in
full conflict mode. Nothing can make the situation any worse. Let's
take the chance to name things properly.

This patch performs the following renames.

* s/SYSFS_DIR/KERNFS_DIR/
* s/SYSFS_KOBJ_ATTR/KERNFS_FILE/
* s/SYSFS_KOBJ_LINK/KERNFS_LINK/
* s/SYSFS_{TYPE_FLAGS}/KERNFS_{TYPE_FLAGS}/
* s/SYSFS_FLAG_{FLAG}/KERNFS_{FLAG}/
* s/sysfs_type()/kernfs_type()/
* s/SD_DEACTIVATED_BIAS/KN_DEACTIVATED_BIAS/

This patch is strictly rename only and doesn't introduce any
functional difference.

Signed-off-by: Tejun Heo <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

fs/kernfs/dir.c

···
 	struct rb_node **node = &kn->parent->dir.children.rb_node;
 	struct rb_node *parent = NULL;
 
-	if (sysfs_type(kn) == SYSFS_DIR)
+	if (kernfs_type(kn) == KERNFS_DIR)
 		kn->parent->dir.subdirs++;
 
 	while (*node) {
···
  */
 static void sysfs_unlink_sibling(struct kernfs_node *kn)
 {
-	if (sysfs_type(kn) == SYSFS_DIR)
+	if (kernfs_type(kn) == KERNFS_DIR)
 		kn->parent->dir.subdirs--;
 
 	rb_erase(&kn->rb, &kn->parent->dir.children);
···
 	if (!atomic_inc_unless_negative(&kn->active))
 		return NULL;
 
-	if (kn->flags & SYSFS_FLAG_LOCKDEP)
+	if (kn->flags & KERNFS_LOCKDEP)
 		rwsem_acquire_read(&kn->dep_map, 0, 1, _RET_IP_);
 	return kn;
 }
···
 	if (unlikely(!kn))
 		return;
 
-	if (kn->flags & SYSFS_FLAG_LOCKDEP)
+	if (kn->flags & KERNFS_LOCKDEP)
 		rwsem_release(&kn->dep_map, 1, _RET_IP_);
 	v = atomic_dec_return(&kn->active);
-	if (likely(v != SD_DEACTIVATED_BIAS))
+	if (likely(v != KN_DEACTIVATED_BIAS))
 		return;
 
 	/*
···
 	DECLARE_COMPLETION_ONSTACK(wait);
 	int v;
 
-	BUG_ON(!(kn->flags & SYSFS_FLAG_REMOVED));
+	BUG_ON(!(kn->flags & KERNFS_REMOVED));
 
-	if (!(sysfs_type(kn) & SYSFS_ACTIVE_REF))
+	if (!(kernfs_type(kn) & KERNFS_ACTIVE_REF))
 		return;
 
 	kn->u.completion = (void *)&wait;
···
 	/* atomic_add_return() is a mb(), put_active() will always see
 	 * the updated kn->u.completion.
 	 */
-	v = atomic_add_return(SD_DEACTIVATED_BIAS, &kn->active);
+	v = atomic_add_return(KN_DEACTIVATED_BIAS, &kn->active);
 
-	if (v != SD_DEACTIVATED_BIAS) {
+	if (v != KN_DEACTIVATED_BIAS) {
 		lock_contended(&kn->dep_map, _RET_IP_);
 		wait_for_completion(&wait);
 	}
···
 	 */
 	parent = kn->parent;
 
-	WARN(!(kn->flags & SYSFS_FLAG_REMOVED),
+	WARN(!(kn->flags & KERNFS_REMOVED),
 		"sysfs: free using entry: %s/%s\n",
 		parent ? parent->name : "", kn->name);
 
-	if (sysfs_type(kn) == SYSFS_KOBJ_LINK)
+	if (kernfs_type(kn) == KERNFS_LINK)
 		kernfs_put(kn->symlink.target_kn);
-	if (sysfs_type(kn) & SYSFS_COPY_NAME)
+	if (kernfs_type(kn) & KERNFS_COPY_NAME)
 		kfree(kn->name);
 	if (kn->iattr) {
 		if (kn->iattr->ia_secdata)
···
 static int sysfs_dentry_delete(const struct dentry *dentry)
 {
 	struct kernfs_node *kn = dentry->d_fsdata;
-	return !(kn && !(kn->flags & SYSFS_FLAG_REMOVED));
+	return !(kn && !(kn->flags & KERNFS_REMOVED));
 }
 
 static int sysfs_dentry_revalidate(struct dentry *dentry, unsigned int flags)
···
 	mutex_lock(&sysfs_mutex);
 
 	/* The sysfs dirent has been deleted */
-	if (kn->flags & SYSFS_FLAG_REMOVED)
+	if (kn->flags & KERNFS_REMOVED)
 		goto out_bad;
 
 	/* The sysfs dirent has been moved? */
···
 	struct kernfs_node *kn;
 	int ret;
 
-	if (type & SYSFS_COPY_NAME) {
+	if (type & KERNFS_COPY_NAME) {
 		name = dup_name = kstrdup(name, GFP_KERNEL);
 		if (!name)
 			return NULL;
···
 
 	kn->name = name;
 	kn->mode = mode;
-	kn->flags = type | SYSFS_FLAG_REMOVED;
+	kn->flags = type | KERNFS_REMOVED;
 
 	return kn;
 
···
 		return -EINVAL;
 	}
 
-	if (sysfs_type(parent) != SYSFS_DIR)
+	if (kernfs_type(parent) != KERNFS_DIR)
 		return -EINVAL;
 
 	kn->hash = sysfs_name_hash(kn->name, kn->ns);
···
 	}
 
 	/* Mark the entry added into directory tree */
-	kn->flags &= ~SYSFS_FLAG_REMOVED;
+	kn->flags &= ~KERNFS_REMOVED;
 
 	return 0;
 }
···
 	 * Removal can be called multiple times on the same node.  Only the
 	 * first invocation is effective and puts the base ref.
 	 */
-	if (kn->flags & SYSFS_FLAG_REMOVED)
+	if (kn->flags & KERNFS_REMOVED)
 		return;
 
 	if (kn->parent) {
···
 		}
 	}
 
-	kn->flags |= SYSFS_FLAG_REMOVED;
+	kn->flags |= KERNFS_REMOVED;
 	kn->u.removed_list = acxt->removed;
 	acxt->removed = kn;
 }
···
 
 	ida_init(&root->ino_ida);
 
-	kn = sysfs_new_dirent(root, "", S_IFDIR | S_IRUGO | S_IXUGO, SYSFS_DIR);
+	kn = sysfs_new_dirent(root, "", S_IFDIR | S_IRUGO | S_IXUGO, KERNFS_DIR);
 	if (!kn) {
 		ida_destroy(&root->ino_ida);
 		kfree(root);
 		return ERR_PTR(-ENOMEM);
 	}
 
-	kn->flags &= ~SYSFS_FLAG_REMOVED;
+	kn->flags &= ~KERNFS_REMOVED;
 	kn->priv = priv;
 	kn->dir.root = root;
 
···
 	int rc;
 
 	/* allocate */
-	kn = sysfs_new_dirent(kernfs_root(parent), name, mode, SYSFS_DIR);
+	kn = sysfs_new_dirent(kernfs_root(parent), name, mode, KERNFS_DIR);
 	if (!kn)
 		return ERR_PTR(-ENOMEM);
 
···
 
 		last = pos;
 
-		if (sysfs_type(pos) != SYSFS_DIR)
+		if (kernfs_type(pos) != KERNFS_DIR)
 			break;
 
 		rbn = rb_first(&pos->dir.children);
···
 	struct kernfs_node *parent, loff_t hash, struct kernfs_node *pos)
 {
 	if (pos) {
-		int valid = !(pos->flags & SYSFS_FLAG_REMOVED) &&
+		int valid = !(pos->flags & KERNFS_REMOVED) &&
 			pos->parent == parent && hash == pos->hash;
 		kernfs_put(pos);
 		if (!valid)

fs/kernfs/file.c

···
  */
 static const struct kernfs_ops *kernfs_ops(struct kernfs_node *kn)
 {
-	if (kn->flags & SYSFS_FLAG_LOCKDEP)
+	if (kn->flags & KERNFS_LOCKDEP)
 		lockdep_assert_held(kn);
 	return kn->attr.ops;
 }
···
 {
 	struct kernfs_open_file *of = kernfs_of(file);
 
-	if (of->kn->flags & SYSFS_FLAG_HAS_SEQ_SHOW)
+	if (of->kn->flags & KERNFS_HAS_SEQ_SHOW)
 		return seq_read(file, user_buf, count, ppos);
 	else
 		return kernfs_file_direct_read(of, user_buf, count, ppos);
···
 	 * without grabbing @of->mutex by testing HAS_MMAP flag.  See the
 	 * comment in kernfs_file_open() for more details.
 	 */
-	if (!(of->kn->flags & SYSFS_FLAG_HAS_MMAP))
+	if (!(of->kn->flags & KERNFS_HAS_MMAP))
 		return -ENODEV;
 
 	mutex_lock(&of->mutex);
···
 	struct kernfs_open_node *on;
 	struct kernfs_open_file *of;
 
-	if (!(kn->flags & SYSFS_FLAG_HAS_MMAP))
+	if (!(kn->flags & KERNFS_HAS_MMAP))
 		return;
 
 	spin_lock_irq(&kernfs_open_node_lock);
···
 
 	spin_lock_irqsave(&kernfs_open_node_lock, flags);
 
-	if (!WARN_ON(sysfs_type(kn) != SYSFS_KOBJ_ATTR)) {
+	if (!WARN_ON(kernfs_type(kn) != KERNFS_FILE)) {
 		on = kn->attr.open;
 		if (on) {
 			atomic_inc(&on->event);
···
 	int rc;
 
 	kn = sysfs_new_dirent(kernfs_root(parent), name,
-			      (mode & S_IALLUGO) | S_IFREG, SYSFS_KOBJ_ATTR);
+			      (mode & S_IALLUGO) | S_IFREG, KERNFS_FILE);
 	if (!kn)
 		return ERR_PTR(-ENOMEM);
 
···
 #ifdef CONFIG_DEBUG_LOCK_ALLOC
 	if (key) {
 		lockdep_init_map(&kn->dep_map, "s_active", key, 0);
-		kn->flags |= SYSFS_FLAG_LOCKDEP;
+		kn->flags |= KERNFS_LOCKDEP;
 	}
 #endif
 
···
 	 * ref.  Cache their existence in flags.
 	 */
 	if (ops->seq_show)
-		kn->flags |= SYSFS_FLAG_HAS_SEQ_SHOW;
+		kn->flags |= KERNFS_HAS_SEQ_SHOW;
 	if (ops->mmap)
-		kn->flags |= SYSFS_FLAG_HAS_MMAP;
+		kn->flags |= KERNFS_HAS_MMAP;
 
 	sysfs_addrm_start(&acxt);
 	rc = sysfs_add_one(&acxt, kn, parent);

fs/kernfs/inode.c

···
 					    attrs->ia_secdata_len);
 	}
 
-	if (sysfs_type(kn) == SYSFS_DIR)
+	if (kernfs_type(kn) == KERNFS_DIR)
 		set_nlink(inode, kn->dir.subdirs + 2);
 }
 
···
 	sysfs_refresh_inode(kn, inode);
 
 	/* initialize inode according to type */
-	switch (sysfs_type(kn)) {
-	case SYSFS_DIR:
+	switch (kernfs_type(kn)) {
+	case KERNFS_DIR:
 		inode->i_op = &sysfs_dir_inode_operations;
 		inode->i_fop = &sysfs_dir_operations;
 		break;
-	case SYSFS_KOBJ_ATTR:
+	case KERNFS_FILE:
 		inode->i_size = kn->attr.size;
 		inode->i_fop = &kernfs_file_operations;
 		break;
-	case SYSFS_KOBJ_LINK:
+	case KERNFS_LINK:
 		inode->i_op = &sysfs_symlink_inode_operations;
 		break;
 	default:

fs/kernfs/kernfs-internal.h

···
 	struct simple_xattrs	xattrs;
 };
 
-#define SD_DEACTIVATED_BIAS		INT_MIN
+#define KN_DEACTIVATED_BIAS		INT_MIN
 
-/* SYSFS_TYPE_MASK and types are defined in include/linux/kernfs.h */
+/* KERNFS_TYPE_MASK and types are defined in include/linux/kernfs.h */
 
 /**
  * kernfs_root - find out the kernfs_root a kernfs_node belongs to

fs/kernfs/symlink.c

···
 	int error;
 
 	kn = sysfs_new_dirent(kernfs_root(parent), name, S_IFLNK|S_IRWXUGO,
-			      SYSFS_KOBJ_LINK);
+			      KERNFS_LINK);
 	if (!kn)
 		return ERR_PTR(-ENOMEM);
 

fs/sysfs/dir.c

···
 	spin_unlock(&sysfs_symlink_target_lock);
 
 	if (kn) {
-		WARN_ON_ONCE(sysfs_type(kn) != SYSFS_DIR);
+		WARN_ON_ONCE(kernfs_type(kn) != KERNFS_DIR);
 		kernfs_remove(kn);
 	}
 }

fs/sysfs/file.c

···
 {
 	struct kobject *kobj = kn->parent->priv;
 
-	if (kn->flags & SYSFS_FLAG_LOCKDEP)
+	if (kn->flags & KERNFS_LOCKDEP)
 		lockdep_assert_held(kn);
 	return kobj->ktype ? kobj->ktype->sysfs_ops : NULL;
 }

fs/sysfs/symlink.c

···
 		goto out;
 
 	result = -EINVAL;
-	if (sysfs_type(kn) != SYSFS_KOBJ_LINK)
+	if (kernfs_type(kn) != KERNFS_LINK)
 		goto out;
 	if (kn->symlink.target_kn->priv != targ)
 		goto out;

include/linux/kernfs.h

···
 struct kernfs_iattrs;
 
 enum kernfs_node_type {
-	SYSFS_DIR		= 0x0001,
-	SYSFS_KOBJ_ATTR		= 0x0002,
-	SYSFS_KOBJ_LINK		= 0x0004,
+	KERNFS_DIR		= 0x0001,
+	KERNFS_FILE		= 0x0002,
+	KERNFS_LINK		= 0x0004,
 };
 
-#define SYSFS_TYPE_MASK		0x000f
-#define SYSFS_COPY_NAME		(SYSFS_DIR | SYSFS_KOBJ_LINK)
-#define SYSFS_ACTIVE_REF	SYSFS_KOBJ_ATTR
-#define SYSFS_FLAG_MASK		~SYSFS_TYPE_MASK
+#define KERNFS_TYPE_MASK	0x000f
+#define KERNFS_COPY_NAME	(KERNFS_DIR | KERNFS_LINK)
+#define KERNFS_ACTIVE_REF	KERNFS_FILE
+#define KERNFS_FLAG_MASK	~KERNFS_TYPE_MASK
 
 enum kernfs_node_flag {
-	SYSFS_FLAG_REMOVED	= 0x0010,
-	SYSFS_FLAG_NS		= 0x0020,
-	SYSFS_FLAG_HAS_SEQ_SHOW	= 0x0040,
-	SYSFS_FLAG_HAS_MMAP	= 0x0080,
-	SYSFS_FLAG_LOCKDEP	= 0x0100,
+	KERNFS_REMOVED		= 0x0010,
+	KERNFS_NS		= 0x0020,
+	KERNFS_HAS_SEQ_SHOW	= 0x0040,
+	KERNFS_HAS_MMAP		= 0x0080,
+	KERNFS_LOCKDEP		= 0x0100,
 };
 
 /* type-specific structures for kernfs_node union members */
···
 
 #ifdef CONFIG_SYSFS
 
-static inline enum kernfs_node_type sysfs_type(struct kernfs_node *kn)
+static inline enum kernfs_node_type kernfs_type(struct kernfs_node *kn)
 {
-	return kn->flags & SYSFS_TYPE_MASK;
+	return kn->flags & KERNFS_TYPE_MASK;
 }
 
 /**
···
  */
 static inline void kernfs_enable_ns(struct kernfs_node *kn)
 {
-	WARN_ON_ONCE(sysfs_type(kn) != SYSFS_DIR);
+	WARN_ON_ONCE(kernfs_type(kn) != KERNFS_DIR);
 	WARN_ON_ONCE(!RB_EMPTY_ROOT(&kn->dir.children));
-	kn->flags |= SYSFS_FLAG_NS;
+	kn->flags |= KERNFS_NS;
 }
 
 /**
···
  */
 static inline bool kernfs_ns_enabled(struct kernfs_node *kn)
 {
-	return kn->flags & SYSFS_FLAG_NS;
+	return kn->flags & KERNFS_NS;
 }
 
 struct kernfs_node *kernfs_find_and_get_ns(struct kernfs_node *parent,
···
 
 #else	/* CONFIG_SYSFS */
 
-static inline enum kernfs_node_type sysfs_type(struct kernfs_node *kn)
+static inline enum kernfs_node_type kernfs_type(struct kernfs_node *kn)
 { return 0; }	/* whatever */
 
 static inline void kernfs_enable_ns(struct kernfs_node *kn) { }